HK1227122B - Network printer system - Google Patents

Description

Network printing system

Related applications

This application claims priority to U.S. patent application Ser. No. 14/478,949, filed on September 5, 2014, and entitled “NETWORK PRINTING SYSTEM,” which claims priority to and is a continuation-in-part of U.S. patent application Ser. No. 14/095,413, filed on December 3, 2013, and entitled “NETWORK PRINTING SYSTEM,” which is now U.S. Patent No. 8,891,982 B2, which claims priority to and is a continuation-in-part of U.S. patent application Ser. No. 13/667,238, filed on November 2, 2012, and entitled “NETWORK PRINTING SYSTEM,” which claims priority to and is a continuation-in-part of U.S. patent application Ser. No. 13/538,347, filed on June 29, 2012, and entitled “REFILLABLE TONER CARTRIDGE WITH IMPROVED THROUGHPUT,” the entire contents of each of which are incorporated herein by reference.

Background Art

An image recording apparatus such as a laser printer uses a replaceable cartridge that contains a recording material to record an image on a recording medium.

Electrostatic or laser printers form images on recording media by transporting toner particles onto the medium. Typically, a recording drum is energized and forms a latent image on the drum by laser. This latent image is developed on the drum by a developer or toner particles, and this latent image is directly or indirectly transferred to the recording medium. In color printers, multiple toner cartridges are configured to transmit color images.

Print cartridges typically include a storage device. This storage device may be loaded with information representing cartridge parameters. When the printer detects the installation of a new cartridge, the printer reads the information from the storage device. This information can be used to calibrate the operation of the printing device based on the cartridge parameters. Typically, the storage device includes information regarding the cartridge capacity. The printer can read the cartridge capacity and print a status page informing the user of the cartridge information. This status page may include information such as the manufacturing date, cartridge model, and the cartridge's estimated page count.

The information stored in the memory can also be used to monitor the print life of the toner cartridge. One method of monitoring the use of the print cartridge is to count the amount of printing performed. In an electrostatic printer, a counter can count the amount of pixels, lines, or pages printed by each toner cartridge. Each counted amount is then processed into a count signal, and the printer sends each count signal to the appropriate toner cartridge. The toner cartridge includes a memory that stores an initial value representing the amount of printing agent contained in the toner cartridge. The printer uses this initial value and the amount of pages or lines printed to determine the remaining life of the toner cartridge. When the toner cartridge reaches a low level, the printer can warn the operator to replace the toner cartridge and ultimately prevent the toner cartridge from being used.

A used print cartridge includes multiple components that have a useful life after initial use. It is desirable to be able to refill or remanufacture these used print cartridges. This provides a cheaper alternative than purchasing a new print cartridge. When refilling a print cartridge, it would be advantageous to provide a cartridge with an increased print life. In an inkjet printer, the print life can be increased by adding more ink than was initially filled in the cartridge or by using an ink with a higher print efficiency. In a laser printer, the print life can be extended by filling the cartridge with additional toner or by using a toner with an increased print efficiency.

When it is desired to provide a higher output toner cartridge, the initial value stored in the memory must be changed. If the toner cartridge has the ability to record and increase the page count and the initial value displayed by the printer does not reflect this increased capability, the printer may prevent the toner cartridge from completing its full printing life. Furthermore, if the information stored in the memory indicates an increased print capability, the printed status page will not reflect the appropriate page count.

Image recording devices are also often connected to multiple devices via a network. For example, in an office building, there are often multiple image recording devices of various types connected to the network. It is desirable to have a network that manages these printers to ensure that printing is performed by the most appropriate or economical printing device.

Third-party vendors manage these networks of imaging devices. These third-party vendors, often referred to as managed print service (MPS) vendors, manage and maintain the network of imaging devices. MPS vendors monitor the printing network, provide replacement print cartridges, and perform repairs on these printers. MPS vendors charge users a base price for each printed page.

MPS suppliers are expected to use remanufactured print cartridges to reduce costs and environmental impact. Furthermore, MPS suppliers are expected to use high-yield cartridges because this reduces the frequency of cartridge replacement and refilling. However, it is important that MPS suppliers accurately predict the end of life of high-yield print cartridges.

Therefore, an object of the present invention is to provide a high-throughput print toner cartridge that displays appropriate information on a status page and performs printing before the recording material in the toner cartridge becomes empty or nearly empty.

Summary of the Invention

The present method and system allow a refilled print cartridge to provide a different yield than the original yield of the print cartridge. For example, the refilled print cartridge can be a high-yield print cartridge capable of printing more pages than a standard-yield print cartridge. This high-yield print cartridge can be used in a network printing device.

In one aspect of the present application, a method includes refilling a toner cartridge having a waste bin, a sump, and a cartridge chip, the cartridge chip including a memory storing information indicating an initial amount of toner loaded in the cartridge, wherein the size of the waste bin limits the maximum amount of toner that can be loaded into the sump. The method includes determining a toner capacity of the waste bin, determining a coverage efficiency of the toner to be loaded into the sump, and determining a maximum amount of toner loaded into the sump, wherein the maximum amount of toner is determined based on the toner capacity of the waste bin and the coverage efficiency of the toner. The sump is loaded with a new amount of toner that is greater than the amount of toner initially loaded into the sump by the original manufacturer. A replacement cartridge chip is provided, and the replacement cartridge chip includes a memory containing information indicating the new amount of toner or a new page yield.

In another aspect, the method includes refilling a toner cartridge having a waste bin, a sump, and a cartridge chip, the cartridge chip including a memory storing information indicating an initial amount of toner loaded in the cartridge, wherein the size of the waste bin limits a maximum amount of toner that can be loaded into the sump. The method includes determining a toner capacity of the waste bin; selecting a toner to be loaded into the sump, wherein the selected toner has a predetermined coverage efficiency; and determining a maximum amount of toner that can be loaded into the sump, wherein the maximum amount of toner is determined based on the capacity of the waste bin and the coverage efficiency of the toner. The sump is loaded with a new amount of toner that is greater than the amount of toner initially loaded in the sump by the original manufacturer. The replacement cartridge chip includes a processor containing information indicating a new page yield or a new amount of toner set on the toner cartridge.

In another aspect, a method includes refilling a toner cartridge having a waste container, a storage tank, and a toner cartridge chip. The method includes providing replacement toner having one or more characteristics, and filling the storage tank with a predetermined amount of replacement toner. A toner cartridge life is determined based on the amount of replacement toner and the toner characteristics. Based on the determined toner cartridge life, information indicating an initial amount of toner loaded is updated in a memory of the toner cartridge chip.

In one aspect of the present application, a toner cartridge is used in an image forming apparatus. The toner cartridge includes a waste bin having a toner capacity, a sump having a toner capacity, and a toner cartridge chip. The sump is initially loaded with toner having a coverage efficiency, and the toner cartridge chip includes a memory for storing information indicating the amount of toner loaded in the sump. The sump has a larger toner capacity than the waste bin and is loaded with a predetermined amount of toner based on the waste bin capacity and the toner coverage efficiency.

In another aspect, a refilled toner cartridge is used in an image forming apparatus. The refilled toner cartridge includes a waste tank having a toner capacity, a sump having a toner capacity, and a toner cartridge chip having a memory for storing information indicating an initial amount of toner loaded in the sump. The sump is loaded with a certain amount of replacement toner having characteristics different from those of the toner initially loaded in the toner cartridge. The information indicating the initial amount of toner is changed based on at least one characteristic of the replacement toner.

In another embodiment, a "cartridge" is not a print cartridge, but rather another component within a printer that has a limited purpose. For example, a printer uses a roller to feed recording media through a print zone. The roller works by using friction to force the recording media through the printer. The surface of the roller is typically a material such as plastic or rubber, which wears down over the life of the printer.

In another aspect of the present invention, a system for determining the exact amount of consumables remaining in a print cartridge is disclosed. The system includes a printing device having a print cartridge mounted therein. The print cartridge has a cartridge identifier associated therewith. The system also includes a processor and a peripheral device located between at least one printing device and the processor to monitor communications between the processor and the printing device. The peripheral device determines the exact amount of consumables remaining by monitoring communications between the processor and the printing device.

In another aspect of the present invention, a system for determining the exact amount of consumables in a print cartridge is disclosed. The system includes a printing device containing a print cartridge. The print cartridge has an identifier or a cartridge identification associated therewith. The system also includes a processor. The processor includes software and monitors communications between the processor and the printing device. The processor determines the exact amount of consumables remaining based on the cartridge identification by monitoring communications between the processor and the printing device.

In another aspect of the present invention, the presence of the identifier informs the virtual printer or MPS system that a toner cartridge with a customized yield is being used and allows the MPS to appropriately report toner levels and interpret when the cartridge is becoming "low" and "empty." The presence of the identifier enables the MPS system to more accurately determine remaining toner to avoid premature cartridge replacement.

The existence of the mark can make the MPS system determine that the color cartridge is remanufactured by a certain company. In addition, the existence of this mark can make the MPS system determine that the color cartridge should preferably be circulated and returned to the company by a certain company using the information and phone number of the remanufacturer.

The presence of the identifier can cause the MPS system to change the printer messages, LCD, warning lights, etc. that the printer may present to the printer operator. In addition, the presence of such an identifier can cause the MPS system to rewrite the message that the user issuing the print job will receive on his computer.

The system and method also allow the MPS system to reject print jobs, retain status information for printers, route print jobs to specific printers, and enable users to print only to specific printers.

The system and method also enables the MPS system to reset the printer (or require user intervention to reset the printer) at certain points in the life of the toner cartridge, so that the identifier can adjust certain parameters to reflect its appropriate output information. The MPS system identifies the chip and certain conditions, such as low toner or a certain number of pages have been printed. The MPS system sends a message to the MPS vendor, the end user, or both, instructing the end user to open the printer's cover, shut down the printer, or remove the toner cartridge and replace it. The remaining count in the chip is then reset to a higher count.

The system and method also enables the MPS system to affect other printer status images, such as: supply status pages, printer intranet servers, and printer utility software.

In another embodiment, the print cartridge is "paired" with the MPS system and will not function outside of the MPS system. This prevents the print cartridge from being used outside of the MPS system to print non-authenticated pages or for use outside of the knowledge of the MPS system.

In another embodiment, a simple network management protocol and a management information base (MIB) provided with the printer are used to identify high-throughput print cartridges.

These and other features and objects of the present invention will be more fully understood from the following detailed description of embodiments, which should be read with reference to the accompanying drawings.

In this regard, before explaining at least one embodiment of the present invention in detail, it should be understood that the present invention is not limited to the application of its detailed construction and is not limited to the arrangement of components set forth in the specification or shown in the drawings. The present invention is capable of other embodiments and of being practiced and implemented in various ways. Furthermore, it should be understood that the phraseology and terminology used herein, as well as the abstract, are for descriptive purposes and should not be considered limiting.

Therefore, those skilled in the art will recognize that the concepts upon which this disclosure is based can be readily utilized as a basis for designing other structures, methods, and systems for carrying out some of the purposes of the present invention. It is therefore important that the claims be considered to include such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and form a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention:

FIG1 shows a perspective view of a driving side end of a toner cartridge of the prior art;

FIG2 shows a perspective view of the non-driving side end of a toner cartridge of the prior art;

FIG3 shows a perspective view of the waste bin assembly;

FIG4 shows a perspective view of the waste bin assembly;

FIG5 shows a cross-sectional view of a chip holding structure of a toner cartridge of the prior art;

FIG6 illustrates a method of filling a toner cartridge;

FIG7 shows another method of filling the toner cartridge;

FIG8 a shows a toner cartridge with a standard reservoir, and FIG8 b shows a toner cartridge with an increased throughput reservoir;

FIG9 shows a conventional management printing system;

FIG10 shows a system for monitoring a printing device;

FIG11 shows the data stored in the color cartridge chip;

FIG12 illustrates a method for determining the print yield of a non-OEM print cartridge using SNMP and MIB; and

FIG. 13 shows a block diagram of a system configured to perform the method shown in FIG. 12 .

DETAILED DESCRIPTION

In an imaging and printing device, a page count recorded by a non-volatile storage module ("storage module") increases as pages are printed. The page count may include the total number of pages printed by a printer and the total number of pages printed by each of several print cartridges. Recording multiple pages for each print category allows recording page counts for specific types of print jobs that can be printed, such as the total number of color pages, black and white pages, letter-size pages, legal-size pages, transparencies, etc. In addition to recording page counts, the non-volatile storage module may enclose a container, such as an ink or toner cartridge, and the storage module may include one or more fields for recording consumption of the container. One of ordinary skill in the art will recognize that an imaging and printing device may include a non-volatile storage module having one or more counters, source bit fields, or a combination thereof.

Figures 1 and 2 show perspective views of a toner cartridge 100 of the prior art. In addition to other components, the toner cartridge 100 includes a toner sump assembly 102 and a waste bin assembly 104. Figures 3 and 4 show perspective views of the waste bin assembly 104 after being separated from the toner cartridge 100. The waste bin assembly 104 includes a waste bin 106, an optical conductor (OPC) cartridge 108, and a chip holding structure 140, which will be described in detail below. The OPC cartridge 108 includes a cylindrical tube having a first hub 110 and a second hub 112, wherein each hub 110 and 112 extends from one end of the OPC cartridge 108. The OPC cartridge 108 is held in place by a drive side end cap 114 including an OPC holding member 118 and a non-drive side end cap 116 including an OPC holding member 120. The OPC retaining members 118 and 120 each include a cylindrical opening that engages and retains the ends of the hubs 110 and 112 during rotation of the OPC drum 108. The cylindrical opening of the OPC retaining member 120 narrows to a flange 122 at the end.

FIG5 shows a cross-sectional view of a chip retaining structure 500 of a prior art toner cartridge that holds an OEM chip 502. The OEM chip 502 may include electrical contacts 504 on one side of a printed circuit board (PCB) 506 for interfacing with a printer, and circuitry 508 with a memory element on the opposite side. Plastic flanges 510 and 512 retain the OEM chip from the top and sides while a support member 514 supports the bottom of the chip 502. The support member 514 and flanges 510 and 512 form a slot into which the chip 502 is inserted for interfacing with the toner cartridge.

The OEM chip 502 includes a memory element that stores data related to the toner cartridge. This data may include the date of manufacture, the manufacturer's name, cartridge parameters, toner type, toner quantity, and other desired information. When the cartridge is first installed in the printer, the printer communicates electrically with the chip. This communication can be used to identify the cartridge as a suitable cartridge, i.e., a cartridge manufactured by the OEM and designed to work with a specific printer. The printer can also read data representing toner parameters, including toner load, from the memory. The printer can then calculate the expected page life of the cartridge, i.e., the number of pages the cartridge should be able to record without running out of toner. The printer can print a status page indicating whether the cartridge is authorized for use and the expected page life of the cartridge.

The printer also uses data in the memory to determine the amount of toner remaining in the toner cartridge. The printer includes a counter that counts the number of pages recorded or the number of pixels recorded. When the number of pages recorded approaches the expected page life of the toner cartridge, the printer indicates that the toner level is low. The printer may eventually determine that the toner cartridge is out of toner and cannot print. Alternatively, the printer may include a toner sensor, light pipe, or other mechanism for determining the actual level of toner remaining in the toner cartridge. Such a toner sensor may be activated when the toner count approaches the expected page life of the toner cartridge.

While this description relates to a toner cartridge, the above description is applicable to any type of printer. For example, an inkjet printer may have an ink cartridge that includes an integrated ink tank or a cartridge that is connected to a separate ink tank. The ink cartridge (or separate ink tank) includes a memory that stores data such as ink type, printer authentication data, and ink quantity. This data is used to authenticate the ink cartridge and determine its printing capabilities.

Typically, OEMs do not fill a toner cartridge to the maximum amount of recording material the cartridge can hold. For example, in a toner cartridge, the waste bin is typically smaller than the reservoir. To ensure the waste bin does not overflow, OEMs fill the reservoir below capacity.

It is desirable to be able to refill or remanufacture used print cartridges. Refilling print cartridges provides a more affordable cartridge replacement while maintaining print quality and reducing waste. The printing capacity of a refilled print cartridge can often be increased. By filling a print cartridge with more recording material (e.g., ink or toner) than with a first-time refill, the page capacity can be increased.

Another way to increase the printing capacity of a print cartridge is to use a more efficient recording material, one that allows the same amount of recording material to record additional pages. For example, a toner has an efficiency rating that describes how much toner is used to record an image. The higher the efficiency rating, the more images the toner can record. Furthermore, the higher the efficiency rating, the less wasted toner collects in the waste bin. In one embodiment, the toner cartridge is loaded with a toner with an efficiency of 75% or higher. In another embodiment, the toner cartridge is loaded with a toner with an efficiency of 85% or higher. Conversely, if the print cartridge is filled with a recording material that is less efficient than the original toner, the print cartridge will have a lower output.

Another way to increase the print output of a print cartridge is to enlarge the components of the print cartridge. For example, in a toner cartridge, the size of the waste bin can be increased to allow it to hold more toner. In any type of printer, the size of the recording material container (e.g., ink tank or reservoir) can be increased. FIG8 a shows a standard-output print cartridge with a standard reservoir 810, while FIG8 b shows an expanded-output print cartridge with an enlarged reservoir 820.

Another way to increase the print output of a print cartridge is to modify the efficiency of its components. For example, in a toner cartridge, changing the doctor blade, doctor blade gap, PCR, developer roller, OPC, powder roller, or toner can increase cartridge output. In an inkjet printer, changing the nozzle, jet mechanism, ink, or ink tank can alter cartridge output.

Typically, the OEM writes information into the memory that prevents the cartridge from being reused after use. Therefore, refilled print cartridges often require replacement of the print chip in order to function properly. When a print cartridge has increased printing capacity, the memory must indicate this fact to ensure that the print cartridge functions throughout its lifespan.

FIG6 illustrates a method for refilling a toner cartridge. The method includes determining the storage capacity or limit of a waste bin 600. Determining the toner coverage efficiency 610. Determining the maximum amount of toner that can be loaded into the toner sump based on the waste bin capacity, the sump capacity, and the toner efficiency 620. The sump is then loaded with toner that is greater than the initial loading of the toner cartridge and no greater than the maximum toner amount 630. The memory of the toner cartridge chip is loaded with data related to the amount of toner loaded in the toner cartridge. This method provides a toner cartridge with increased print output that will function properly in OEM printers.

FIG7 illustrates another method for refilling a toner cartridge. The method includes determining the toner capacity of a waste tank 700. Selecting a toner with a predetermined covering efficiency 710. Determining a maximum toner amount based on the waste tank capacity and the covering efficiency 720. Loading the toner cartridge chip with data corresponding to the predetermined maximum toner amount 730. Loading the sump with the maximum toner amount 740. Alternatively, the toner cartridge chip may be loaded with data corresponding to a toner amount less than the maximum toner amount, and the sump is loaded with toner in an amount matching the data.

Using one of the above methods results in a refilled toner cartridge. The toner cartridge includes a waste tank having a toner capacity and a sump having a toner capacity. The sump is initially loaded with toner having a coverage efficiency. The toner cartridge includes a toner cartridge chip, which includes a memory for storing information indicating the amount of toner loaded in the sump. The sump has a larger toner capacity than the waste tank and is loaded with a predetermined amount of toner based on the capacity of the waste tank and the toner coverage efficiency.

Another method for increasing the output of a print cartridge will now be described. The expected lifespan (or print output) of a print cartridge depends on the amount of recording media loaded into the cartridge. However, based on various factors, the print cartridge may run out of recording material before or after the expected output is met. If the print cartridge runs out of recording material after the expected output, the cartridge is removed while there is still recording material left. If the cartridge runs out of recording material before the expected output, the cartridge will be able to stop printing in the middle of a print job. Moreover, in inkjet printers, attempting to print when there is no available ink can damage the recording head. Therefore, OEMs typically set data in memory so that the toner or ink level is immune to empty cartridge alarms.

In order to improve the output of the toner cartridge, the data in the toner cartridge chip memory can be set to more closely match the expected output of the print toner cartridge. Therefore, when the printer shows that the recording material in the print toner cartridge is exhausted, there is less recording material left in the print toner cartridge.

The above-described methods and devices can also be used in a managed printing system (MPS). A managed printing system is a system that monitors and maintains all of an entity's devices through a single entity. Typically, a third-party vendor or information technology (IT) provider uses software to monitor a network of devices, including printers, copiers, scanners, fax machines, and scanners. An MPS routes operations and generates results across the network to ensure the most efficient use of resources. An MPS also monitors the status of devices and performs maintenance on them. For example, an MPS provider can monitor the remaining life of print cartridges, paper usage, and other maintenance-related information.

MPS uses software to manage a network of peripheral devices. MPS can operate a printer and direct it to search for a code stored in the memory of a cartridge chip. This allows the replacement chip's memory to contain additional information compared to the OEM chip without disabling the chip's operation. When the code is detected, the MPS vendor determines that the printer is loaded with a high-yield cartridge. The MPS system can accurately track the amount of recording material remaining in the cartridge and command cartridge replacement at the appropriate time. MPS can update each printer with accurate information or allow each printer to have inaccurate status information.

Figure 9 illustrates a simplified prior art printing network, such as an MPS system. Local network 900 includes several printing devices 910a, 910b, 910c, and 910d, each equipped with a diagnostic unit for collecting data. A local processor 920 is connected to local network 900 via a wired or wireless connection 930 and is partially connected to a firewall via an Internet connection 940.

Although each printing device is described as being provided with a diagnostic unit, it is not necessary for every printer to have a diagnostic unit. In this case, the computer controlling the use of the printing device can be used as a diagnostic unit for some data. In addition, a virtual printer or spooler device can be connected to the printer to be used for diagnosis. The virtual printer device can be a physical device or software installed in a computer or via a network. The virtual printer communicates with the printer and communicates with one or more devices connected to the printer.

The local processor may be a specific computer managed by a specific person or group of people, or it may be a central computer or server.

In this illustration, the local processor is a specific computer 970. The computer may include software containing specific instructions for at least periodically collecting data from the printing devices 910a-d and for storing the data on an external, removable data storage device, such as a USB flash drive, a USB key, or other storage device provided with a USB port for connecting the storage device to a USB port of the local computer 970. Alternatively, the computer may communicate via an Internet connection 940 to an external device or network storing data.

A storage device 980 connected to the local computer 970 may include instructions readable by the computer 970, thereby enabling the local processor to execute programs or software in encoding or storing data from various printing devices, and for processing data to edit another or modify a file memory, which advantageously includes at least a portion of the file history, such as a status monitoring report with its history.

When the storage device is provided with the latest data from the printing device, the data can be processed by a computer such as a computer on the local network, a personal computer that can be adapted to connect to the local network, a remote computer (such as a computer that receives data via the Internet), etc. Alternatively, such processing can be performed on an external device or network when the storage device is not used.

When the processing is carried out in a computer connected to a local network, the data of the printing device and the processing data are advantageously located in one or more storage devices which are accessible to authorized persons via the local network.

When data processing is performed in a computer that is not part of the local network, the storage device 980 can be used by the supplier of the material to analyze the data in his computer, or in a remote network for analyzing the steps to be performed. The data of the storage device can also be sent to an external computer via the Internet.

The following describes an improved method for using the system of FIG. 9 . An authorized person or group of authorized persons for a local network customer, or an authorized person or group of authorized persons who maintains the customer's printing devices, inserts a USB key 980 into a client processor 970. The client processor reads the contents of USB key 980 to initiate a program for searching for data from each printing device on the local network. Each printing device may have a diagnostic unit that can query or interrogate the local network to obtain at least some data from it. Alternatively, each printing device communicates with a single device that performs diagnostics. Furthermore, the program may search for data related to the local network, such as the location of the printing device on the local network, and whether computers on the local network can access the printing device.

The client processor can access the contents of the external storage device to launch a program or software contained in the external storage device, or to initiate Internet communication with a collection program or software for connecting the local processor to the external processor. To access the contents of the external storage device, one or more passwords are required. The client processor now launches the information collection system.

The external storage device may include security features for protecting data access, such as requiring a username and password. Such security features may include one or more biometric security devices, such as a fingerprint scanner 960, which is directly connected to a computer port (such as part of a USB device) or integrated into another electronic device (such as an external storage device 980). Security may also be enhanced by encrypting communications between the various electronic devices (particularly communications transmitted over a network) by encryption software stored on the external storage device 980 and executed on the processor 970, by encryption hardware (not shown), or by both.

One problem associated with the MPS system described above is that it relies on the printer firmware installed in the printer. Typically, the printer firmware communicates with a chip installed on the print cartridge. This communication can serve a number of functions. First, the cartridge chip can transmit authentication information to the printer, which verifies that the print cartridge is suitable for use in the printer. The cartridge chip can also include stored data. This data includes information such as the cartridge's manufacturing date, cartridge configuration, and print material loading.

In many printers, during normal operation, the printer initially communicates with a newly installed print cartridge to confirm that the cartridge is authorized for use in the printer. After authentication is complete, the printer monitors the print job and counts the number of pixels printed during the print job. The pixel count is then stored in memory on the cartridge chip. When the predetermined pixel count is reached, the printer displays a low toner or low ink warning. This warning prompts the user to replace the cartridge. The user then contacts the MPS vendor for a new print cartridge and installs the new cartridge in the printer.

Figure 10 shows a system for monitoring one or more printers connected to a network. A printing device 1010 is connected to one or more processors 1020 via a server 1040. The server 1040 can be an MPS server or a virtual printer. Each processor 1020 is installed with software 1030, which serves as client software. The client software sends all print data to the server 1040. The server 1040 identifies the type of color cartridge used for each printing device 1010 connected to the network. The server 1040 analyzes the print data received from the client software 1030, converts the print data into pixel form, and calculates the amount of consumables based on identification criteria and pixel count. The server 1040 is connected to an external source, such as a web page, for monitoring usage information and enabling updates to the server 1040. The server 1040 can include a universal printer driver or can convert print tasks into .pdf format to simplify operation.

The system of FIG10 can utilize various protocols to pair the print cartridge with the MPS system, i.e., to prevent the print cartridge from operating outside of the MPS environment. For example, a typical printing device will reset upon receiving a reset command. Server 1040 can issue a reset command that causes printing device 1010 to shut down and reset. The printing device reads the cartridge serial number on the cartridge chip before performing other functions. Typically, the printing device checks this serial number each time a cartridge is installed, the power is turned on, or a reset command is received.

In one embodiment, the system is configured so that the cartridge chip prevents full access to the printing device until a specified number of serial numbers have been read (indicating a specified number of printing device reset cycles). When the first serial number read is detected by the cartridge chip, the chip is configured by the MPS system to require a specified number of serial number reads to activate the chip. The MPS system tracks the number of reset commands issued to the printing device and issues a reset command to the printing device until the specified number of serial number reads has been met. Alternatively, the specified number of serial number reads may be varied for each cycle. If the print cartridge is removed from the printing device connected to the MPS system, the print chip will not be installed because the specified number of serial number reads will not occur.

Figure 11 shows an example of data stored in a toner cartridge and readable by a printer. For example, the toner cartridge includes a chip having a memory for storing data read by a printer. The table below describes some information stored for some addresses.

The cartridge identifier may be data stored in the printer. Some data in the memory is read by the printer and affects its performance. Other data stored in the printer, such as addresses 20, 28, 2A, 2B, 2E, 2F, 5C, and 79, does not affect the printer's performance. The cartridge identifier is different from the original data from the OEM cartridge. Therefore, the cartridge identifier should preferably be stored in an area that does not affect the printer's performance. For example, the cartridge identifier may be stored in addresses 1D to 1F as a unique serial number identified by the MPS system or virtual printer (i.e., different from the OEM serial number). Alternatively, another area of the memory may be loaded with data identified as the cartridge identifier. For example, the expiration date may be data from a long time in the future or the past, such as December 1, 3060, which is recognized as the cartridge identifier. Any field read by the printer may include data used as an identifier. Alternatively, addresses typically 00 or FF, which are not read by the printer, may be used to store the cartridge identifier. The MPS or virtual printer may cause the printer to read addresses that are normally ignored.

If the print cartridge installed in the printer is a remanufactured print cartridge, the printer can issue a low toner (or ink) warning in advance. For example, if the print cartridge is a remanufactured toner cartridge that increases throughput, the printer may indicate a low toner status after printing 4,000 pages. However, a remanufactured toner cartridge can print 6,000 pages before reaching a low toner status. In this example, the toner cartridge was removed with 2,000 pages remaining. This results in more frequent cartridge replacements and refills, as well as wasted toner.

The current system enables the MPS to more accurately calculate or predict the end of life of a print cartridge. As described above, the cartridge chip includes an identification code that can be read by the MPS or virtual printer. This cartridge code identifies the cartridge to the MPS system. The MPS system can then determine the cartridge characteristics. These characteristics may include cartridge size, toner load, ink load, manufacturer's certification, manufacturing date, remanufacturer's certification, remanufacture date, toner characteristics, ink characteristics, and the cartridge's output, as well as other desired information.

The identification code can be data stored in a memory, a barcode or other machine-readable information, an RFID tag, user input, or any other suitable means for identifying a cartridge. Furthermore, the identification code can be associated with a print cartridge that does not include a cartridge chip or memory. The identification code can be located on the print cartridge, wherein the identification code wirelessly cooperates and communicates with the MPS or virtual printer.

The MPS or virtual printer is used to monitor the communication between the processor and the printer or imaging device. This communication is used to determine details about the print job, such as the number of pages printed and the density of the printed image. The virtual printer then calculates the number of pixels printed based on the print job information. The virtual processor can store this information on an external storage device 880 or send this information to the MPS provider. Each time the printer is used to print, the virtual printer repeats these steps and calculates the total number of pixels printed by the printer. When the total number of pixels printed by the printer matches the threshold output expectation of the print cartridge, the processor 870 sends information to the MPS provider to provide a replacement cartridge and to the printing user to order the replacement cartridge.

Another advantage of this system is that any information can be associated with the toner cartridge identification. This enables the system to determine toner or ink usage with greater accuracy. For example, an electrostatic printer in a climate-controlled office will print documents with a specific amount of toner per page. For example, a printer in an office might print documents with an average of 9 mg of toner per page. However, the same printer in a warehouse or production facility located at a higher elevation and with higher humidity will use more toner. Furthermore, if the same printer is used to print charts, it will use a third of the amount of toner per page. The same example is also valid for inkjet printers.

The current system allows the use and environmental information of the printer or toner cartridge to be used to determine a more accurate ink or toner count. For example, if the printer is located in a warehouse in South Florida, the system adjusts the toner count to result in high heat and high humidity conditions.

Another advantage of the current system is that it more efficiently uses network resources. Many corporate environments have one or more print rooms housing multiple printing devices. Often, users send files to the same printer for convenience or habit. The present system allows the virtual printer to select the optimal printer for a print job.

For example, let's say User A needs to print a 500-page text document. User A selects "Print" and sends the print job to the virtual network printer. The virtual network printer then monitors the printers that User A can print to. The virtual printer selects the most efficient printer for printing text documents and one that has enough toner or ink in its cartridge to print the entire document. When the print job is complete, the virtual printer displays the print job completion status at the location of the print job on User A's monitor.

In another example, User A prints a large monochrome text document and an image containing color graphics. The virtual printer can select two different printers to print User A's document: a printer that is most efficient for image documents and a printer for color graphics. The virtual printer then displays the location of the print job on User A's monitor.

Alternatively, the system can spool print jobs from a printer to optimize printer performance. For example, in a laser printer, it's more efficient to print pages continuously rather than printing one page and then waiting for another. A virtual printer can monitor print jobs and send them to the printer, allowing it to print pages continuously. This prevents extra wear on individual printers.

Another example of this system is reducing costs for MPS suppliers. Typically, MPS suppliers estimate the cost of printing a page. This estimate is based on the average print job of the consumer. The MPS supplier then charges its consumers this calculated cost per page plus a surcharge. This surcharge represents the MPS supplier's profit. The current system enables MPS suppliers to reduce the cost per page by using print cartridges closer to the end of their actual lifespan. Furthermore, the current system enables MPS suppliers to better calculate the amount of toner used per page and the type of toner used per page. This allows MPS suppliers to more accurately determine the cost per page. This, in turn, allows MPS suppliers to reduce the costs borne by consumers. Furthermore, this system even allows MPS suppliers to charge per toner system rather than per page mode.

In another embodiment, the presence of the identifier allows the virtual printer or MPS system to reset the printer at some point in the life of the cartridge. In many printers, when the pixel count reaches a predetermined threshold level, the print cartridge is considered empty and the printer will no longer allow the print cartridge to be used for printing. This type of system prevents remanufactured print cartridges from being used to their full printing life, which increases throughput. Methods for alleviating this problem are described below.

An extended life (or high yield) remanufactured print cartridge is loaded into the printer. If necessary, the cartridge chip communicates with the printer for verification. The virtual printer reads the cartridge chip authentication and determines the expected print life for the print cartridge. The virtual printer monitors the above communication with the printer to determine the exact pixel count, amount of toner used, or ink used. After the printer determines that the print cartridge has printed the number of pages or pixels that a standard print cartridge should have printed, the printer is ultimately unable to print with the print cartridge. The virtual printer receives a printer out of service status and determines that the print cartridge is an extended life cartridge and that there is still printing material in the print cartridge. The virtual printer sends a signal to the cartridge chip to tell the chip to reset the chip with printing material. The virtual printer then causes the printer to reset, or shut down and restart, to read the cartridge chip again. The printer reads that the cartridge chip still contains printing material to allow printing to continue.

Alternatively, the virtual printer requires the user to power the printer off and on again or open and close the printer cover. If the virtual printer cannot force the printer to restart, this allows the user to cause the printer to authenticate the chip. Alternatively, if the automatic restart cannot properly reset the printer, the virtual printer may require user intervention.

Another advantage of the current system is that it enables consumption information to be provided to the user. Many traditional printers send ink or toner levels to the user via information displayed on a computer monitor. The printer sends a signal to the connected processor to display information such as "less toner," "less ink," or "change toner cartridge." Moreover, a message providing ordering information (such as the type of toner cartridge) may be displayed or the computer may take the user to an internet website to order a new toner cartridge. The current system enables user information to be displayed to the user. This may include all information that a typical printer may display. The printer may also provide additional information, such as the total number of pages printed, monthly expenses, toner cartridge remanufacturer, or any other desired information.

One way a printer sends information to a user is through a screen or display located on the printer. For example, many printers have a display located on the printer. The display can transmit information related to the printer status, print jobs, out-of-paper indications, out-of-ink or toner indications, or any other desired information. A second way a printer sends information to a user is through a monitor connected to the user's computer. For example, the printer sends information to the user's computer. The computer then causes the connected monitor to display it. A third way a printer sends information to a user is by printing the information onto a recording medium. For example, some printers automatically print a status supply page when a new toner cartridge is loaded into the printer or when the ink or toner level in the toner cartridge reaches a predetermined low level. The status supply page will transmit information such as the toner cartridge model and the number of pages the toner cartridge can print.

The printer uses internal programs to control the operation of the printer, the communication between the printer and connected devices, the information displayed on the printer's display, and the printing of supply status pages. In many conventional printers, the internal programs can be written or modified using a standard programming language such as Printer Control Language (PCL) or Printer Job Language (PJL). Some printers use PJL to enable conversion of printer languages at the job level and to enable status feedback between the printer and a computer or processor. Hewlett developed PJL and describes its use in the Print Job Language Technical Reference Manual, which is incorporated herein by reference. Using PJL, users can develop applications that can convert printer languages, monitor printer status, request information such as printer model and make, change control panel default settings, modify control panel information, and other desired modifications to the printer.

Current systems can use applications written in PJL to control the information displayed by the printer. For example, a printer is loaded with a print cartridge that has an identifier associated with it. The cartridge identifier represents the virtual printer or MPS system characteristics related to the cartridge, such as its expected page output, the printer's remanufacturer, and a website URL with information for ordering a cartridge replacement. The application written in PJL is stored in the processor, in an external device, or on a network. The application is used to communicate with the printer to change the supply status page that the printer will print. The supply status page printed by the printer shows the expected page output for a particular cartridge, the company that supplies or remanufactures the cartridge, and information for ordering the cartridge from the supplier, all of which is based on the cartridge identifier.

In addition, stored applications or additional applications can use PCL or PJL to control the information communicated between the printer and the user via the connected processor and its display. For example, the printer is loaded with a print cartridge that has an associated identifier. The cartridge identifier shows the virtual printer or MPS characteristics related to the cartridge, such as its expected page output, the manufacturer of the print cartridge, and the URL of a website with information for ordering replacement cartridges. Applications written in PJL are stored on the processor, on an external device, or on a network. The application is used to communicate with the printer to change the information transmitted by the printer to the connected processor. This newly transmitted information causes the processor to display information on the user's monitor indicating the expected output of a specific cartridge, the remaining amount of printing material, the company that supplies or remanufactures the cartridge, information for ordering the cartridge from the supplier, and a web link for ordering a new cartridge, all of which are based on the cartridge identifier.

In the above examples, any desired information can be printed on the supply status page or displayed on the monitor. Other forms of communication can be used. For example, the printer can cause the processor to send an email or play an audio signal that transmits the desired information.

In other embodiments, the ink cartridge chip includes a communication device. This communication device can be a Bluetooth device, a wireless network card, an RFID, or any other method of communicating electronic information. In this embodiment, the wireless communication device communicates directly with the virtual printer or MPS system. Alternatively, the wireless device can communicate directly with a system external to the device.

The communication device allows the virtual printer to communicate with the cartridge chip. The cartridge chip can transmit information that is normally only transmitted between the cartridge chip and the print driver. This allows the virtual printer to directly monitor the chip, rather than having to monitor the communication between the processor and the printer. Using the communication device, the chip informs the virtual printer of its update status, and accurate pixel counts, toner counts, ink counts, or page counts can be calculated.

In addition, the communication device can enable the cartridge chip to be reset. This will enable the cartridge chip to be reset without having to return it to the chip manufacturer.

Another advantage of the current system is that it can be used to customize the operation of the printer device. In traditional printers, the printer is a closed system, and the internal printer firmware controls the printer's operation. The firmware loaded into the printer controls the printer's functions and performs recording material usage calculations. The user's ability to control how the printer operates is limited. Typically, the user is limited to controlling image quality using options such as draft, normal, fine, and photo.

One advantage of the current system is that a peripheral device can communicate with the printer and change the way the printer operates.

For example, printer companies often update the firmware used in printers to handle problems found in the operation of the printer or to handle changes implemented in new color cartridges. Sometimes, the updated firmware may cause other errors or cause certain color cartridges to not work properly.

Current systems allow for correction of errors caused by firmware. In some cases, printer firmware revisions can be accessed by an external device. The external device can compare the firmware revisions with the characteristics of the ink cartridge loaded in the printer. Based on the firmware revisions, the external device can perform alternative printer control functions or provide printer information to optimize printing or correct errors.

For example, if a specific firmware revision is known to report incorrect information about the yield of a toner cartridge, the peripheral device can correct the incorrect information and provide the correct information. If the identified toner cartridge characteristics require different printer operation, the peripheral device can change that operation.

In another embodiment, the system can be used to update a printer's firmware. In many printers, the printer prompts the user through an interface indicating that a new version of firmware is available. If the user accepts the new firmware, the printer obtains the newer version of the firmware via an internet connection and updates the printer with the new firmware. The current system allows a peripheral device to indicate the availability of the new firmware. When the user accepts the newer firmware, the peripheral device obtains the firmware from the MPS provider and updates the printer's firmware. Alternatively, the firmware update can be performed automatically or by the MPS, which typically services the printer.

In another embodiment, an external device can change the calibration of the printer to improve the printer's performance and print quality. The printer is calibrated to work with the OEM ink cartridge. The OEM is aware of the ink cartridge characteristics and sets the printer to work with the ink cartridge in a typical printing environment. Changes to the print cartridge, other internal printing components, or printer usage can affect printer operation.

For example, a system includes a laser printer connected to a personal computer and peripheral devices. A user installs a retail toner cartridge with a cartridge logo. The toner cartridge is remanufactured and refilled with additional toner to increase the cartridge's print output. Furthermore, the toner has different properties than the OEM toner.

The peripheral device learns the characteristics of the toner cartridge through the cartridge identification. The peripheral device changes the algorithm used by the printer to calculate print output to match the increased print output of the remanufactured toner cartridge. Furthermore, the peripheral device changes the printer's operating voltage to match the characteristics of the retail toner. This can be an increased voltage level or a decreased voltage. These changes allow the printer to print high-quality images using the retail toner cartridge.

Peripheral device and cartridge identification allows the printer to optimize internal printing components. This identification is not limited to cartridge identification that provides information about the print cartridge. An identification can be used to determine any desired characteristics of the printer and its internal components, the print cartridge and its components, the recording media, the printer's environment, or the printer's user.

For example, a laser printer has many components that can affect image quality and operating characteristics. These components may include an OPC drum, a PCR roller, a power supply, toner, a doctor blade, and a recording medium. The identifier can be used to identify any or all of these components. In addition, the system can use multiple identifiers.

For example, the system may include a cartridge having a cartridge identifier and a user identifier. The cartridge identifier is used to identify characteristics of the cartridge, while the user identifier is used to identify characteristics of the user. The user characteristics may include typical usage, documents typically printed, the environment in which the printer is located, maintenance typically scheduled for use on the printer, and the type of recording material used for printing.

While the above systems and methods describe a virtual printer or MPS system, the present invention is not limited to use with either. The system can be implemented using software loaded onto a network server, software loaded onto a standalone processor, or a remotely located system accessed remotely via the Internet or a communication line. Furthermore, the system and method can be implemented on a single imaging device connected to a single processor or a single imaging device connected to a home network. Furthermore, the system can be used with any type of imaging device connected to a processor. This includes inkjet printers, electrostatic printers, fax machines, digital copiers, printing devices that print three-dimensional models, and all-in-one machines.

In one embodiment, the system and method are implemented using the Simple Network Management Protocol (SNMP) and a Management Information Base (MIB) database. Many printing devices use SNMP to communicate management data about the printing device. This management data is stored as variables describing the printer's configuration. A management application or server can query these variables to determine information about the printing device. Typical information stored as variables includes: printer type, the time and number of Internet Protocol packets sent or received by the printer, printer serial number, purchase order, manufacturing date, and so on. Any desired information can be included, and this information can include thousands of different variables.

The printing device includes firmware for communicating with and managing SNMP. The printer firmware may include all or a subset of SNMP information and may respond to all or a subset of SNMP requests. The firmware may include standard SNMP definitions, i.e., those that are standard across different printing device models, as well as custom SNMP definitions defined by a custom MIB. The MIB is a database that defines and describes variables used in printing devices supporting NMP. The MIB includes many entries similar to the following example entries.

Name:consumable-status-first-install-date

Type:OBJECT-TYPE

OID:1.3.6.1.4.1.11.2.3.9.4.2.1.4.1.10.1.1.8

Full path:

iso(1).org(3).dod(6).internet(1).private(4).enterprises(1).hp(11).nm(2).hpsystem(3).net-peripheral(9).netdm(4).dm(2).device(1).des tination-subsystem(4).print-engine(1).consumables(10).consumables-1(1).consumable-status(1).consumable-status-first-install-date(8)

Module:LJ9000mfp-MIB

Parent:consumable-status

Prev sibling:consumable-status-info

Next sibling:consumable-status-last-use-date

Numerical syntax:Octets

Base syntax:OCTET STRING

Composed syntax:DisplayString

Status:optional

Max access: read-only

Size list:1:0..24

Description:This object is used to report the date on which thisconsumable was first installed.The format of the string is'YYYYMMDD'.Where:

YYYY is the year.

MM is the month (1-12).

DD is the day(1-31).

The device POS needs to indicate what will be written in the event the printer does not have a real time clock.

Additional information:

This object will only exist for Authentic OEM consumables.If thecartridge is deemed to be Non-OEM,then this object will not exist.Forprinters without internal clocks,the date will always be 20000101.

Using the definitions set up in the MIB database, an SNMP "walk" through the MIB is performed to identify each piece of information returned from the MIB. An example of an SNMP query to the MIB is as follows.

587:prtMarkerSuppliesClass.1.1(integer)

supplyThatlsConsumed(3)

588:prtMarkerSuppliesClass.1.2(integer)

supplyThatlsConsumed(3)

589:prtMarkerSuppliesClass.1.3(integer)

supplyThatlsConsumed(3)

590:prtMarkerSuppliesClass.1.4(integer)

supplyThatlsConsumed(3)

591:prtMarkerSuppliesClass.1.5(integer)

supplyThatlsConsumed(3)

592:prtMarkerSuppliesClass.1.6(integer)

supplyThatlsConsumed(3)

593:prtMarkerSuppliesType.1.1(integer)tonerCartridge(21)

594:prtMarkerSuppliesType.1.2(integer)tonerCartridge(21)

595:prtMarkerSuppliesType.1.3(integer)tonerCartridge(21)

596:prtMarkerSuppliesType.1.4(integer)tonerCartridge(21)

597:prtMarkerSuppliesType.1.5(integer)transferUnit(20)

598:prtMarkerSuppliesType.1.6(integer)fuser(15)

599:prtMarkerSuppliesDescription.1.1(octet string)Black PrintCartridge HP C9730A

600:prtMarkerSuppliesDescription.1.2(octet string)Cyan PrintCartridge HP C9731A

601:prtMarkerSuppliesDescription.1.3(octet string)Magenta PrintCartridge HP C9733A

602:prtMarkerSuppliesDescription.1.4(octet string)Yellow PrintCartridge HP C9732A

603:prtMarkerSuppliesDescription.1.5(octet string)Image Transfer KitHP C9734A

604:prtMarkerSuppliesDescription.1.6(octet string)Image Fuser Kit HP1 10V-C9735A,220V-C9736A

605:prtMarkerSuppliesSupplyUnit.1.1(integer)impressions(7)

606:prtMarkerSuppliesSupplyUnit.1.2(integer)impressions(7)

607:prtMarkerSuppliesSupplyUnit.1.3(integer)impressions(7)

608:prtMarkerSupp esSupplyUnit.1.4(integer)impressions(7)

609:prtMarkerSupp esSupplyUnit.1.5(integer)impressions(7)

610:prtMarkerSupp esSupplyUnit.1.6(integer)impressions(7)

611:prtMarkerSupp esMaxCapacity.1.1(integer)13000

612:prtMarkerSupp esMaxCapacity.1.2(integer)12000

613:prtMarkerSupp esMaxCapacity.1.3(integer)12000

614:prtMarkerSupp esMaxCapacity.1.4(integer)12000

615:prtMarkerSupp esMaxCapacity.1.5(integer)120000

616:prtMarkerSupp esMaxCapacity.1.6(integer)150000

FIG12 illustrates a method for determining the print yield of a non-OEM print cartridge using SNMP and the MIB. A print cartridge remanufacturer or supplier fills a print cartridge with a greater amount of printing consumables than provided in the original OEM print cartridge. A cartridge identifier is stored in a memory location on a print chip. The cartridge identifier identifies the print cartridge supplier and the amount of printing consumables loaded into the cartridge. Using SNMP, the MPS system determines in step 1210 that the cartridge chip's memory location contains modified data, namely, a cartridge identifier, that differs from the data in the OEM original printer cartridge chip. In step 1220, the MPS reads this modified data and determines the amount of consumables loaded in the print cartridge and the new print yield for the cartridge. The new print yield can be determined as a percentage of a standard-yield OEM cartridge. In step 1230, the MPS system increases the remaining amount of the standard-yield cartridge by the determined percentage, thereby determining the exact amount of printing consumables remaining over the life of the print cartridge. This exact amount of printing supply remaining is used to trigger a low printing supply remaining condition.

FIG13 illustrates a system configured to perform the method shown in FIG12 . A printing device 1310 includes a print cartridge 1320 and a processor 1330. The print cartridge 1320 includes a cartridge chip having a memory. The memory stores information enabling the print cartridge 1320 and a cartridge identifier. The processor 1330 communicates with the cartridge chip 1340. In many printers, the processor 1330 authenticates the cartridge 1320 based on an authentication algorithm and information stored in the cartridge chip 1340's memory. As described above, the processor 1330 and the cartridge 1340 communicate via the printer's MIB and SNMP. The printer 1310 communicates with an external device 1350, such as an MPS system, a network device, or a processor.

For example, in one printer, a location in the printer chip is directly output as an SNMP address. Replacing the characters stored in this printer chip location changes the characters reported by the printer chip. A print cartridge remanufacturer replaces the characters stored in this field with characters identifying the remanufacturer, indicating the amount of printing consumables loaded in the print cartridge, or both. When the value is read from this location, a value is found that does not match the expected OEM value. This, in turn, indicates that the MPS system's cartridge is a high-yield cartridge, and the MPS system can then perform the above-described method to determine the precise print yield.

Using the aforementioned SNMP and MIB allows for the storage of identifiers customized for different printers. The location in the printer chip can vary for different printers. For example, in some printers, the identifier may be stored in a location that indicates the cartridge capacity. In other printers, the identifier may be stored in a location that indicates the cartridge manufacturer, serial number, manufacturing date, or any other information accessible by the printer. An advantage of this embodiment is that a cartridge remanufacturer or supplier can indicate the location of the print chip containing the identifier to the MPS supplier. This enables the cartridge remanufacturer to customize the print cartridges for the MPS supplier.

In another embodiment, the MPS system is configured to reset the printer chip so that the print cartridge continues to print more pages than the OEM print cartridge. In this embodiment, the MPS system identifies the printer chip and a specific condition, such as low toner or having printed a specific number of pages. The detected condition can be any desired condition. The MPS system sends a message to the MPS vendor, the end user, or both, instructing the end user to open the printer's cover, shut down the printer, or remove and replace the print cartridge. The remaining count in the chip can then be reset to a higher count. This can occur by changing the sequence number, thereby tricking the printer into believing a new cartridge has been inserted. Furthermore, the MPS system or the printer chip includes a chip reset counter. Each time the printer chip is reset, the chip reset counter is incremented to indicate that the printer chip has been reset. Once the chip reset counter reaches a predetermined count, the printer chip is no longer reset. This allows the MPS system to reset the printer chip only a specific number of times and prevents the printer chip from being reset if the print cartridge runs out of printing material or if an object other than the MPS system is present.

In another embodiment, the MPS system is configured to shut down the printer to reset the printer chip without requiring end-user intervention. When a specific condition is detected, the MPS system shuts down the printer and resets the printer chip. The printer chip is reset only when the specific condition is met. This way, the printer chip is not reset every time the cover is opened or the printer is shut down.

Many features and advantages of the present invention will be apparent from the detailed description. Therefore, the appended claims are intended to cover all such features and advantages that fall within the true spirit and scope of the invention. Moreover, since numerous modifications and variations may be made by those skilled in the art, it is not intended to limit the present invention to the exact construction and operation shown and described. Therefore, all suitable modifications and equivalents are intended to be included within the scope of the present invention.

Although the present invention has been described with reference to specific embodiments, those skilled in the art will recognize that various changes and modifications may be made within the scope of the invention. It is intended that the present invention be protected broadly within the spirit and scope of the appended claims.

Claims (16)

1. A method for resetting a print chip (1340), the print chip (1340) being mounted on a print ink cartridge (1320) used in a printing apparatus (1310), wherein the print ink cartridge (1320) has an associated identifier, and the expected print output of the print ink cartridge (1320) differs from the expected print output of a standard output ink cartridge manufactured for use in the printing apparatus (1310), the method comprising: It is determined that the printing ink cartridge (1320) installed in the printing device (1310) has an associated identifier; It has been determined that the predetermined conditions have been met; and The instruction is provided that the printing device (1310) should be turned off, wherein the shutdown of the printing device (1310) resets the printing chip (1340) after the predetermined condition has been met. 2. The method according to claim 1, wherein the identifier is stored in a memory located on the printing ink cartridge (1320). 3. The method of claim 2, wherein the identifier is stored in a specific location in the memory. 4. The method according to claim 3, wherein the Management Information Base (MIB) database is used to identify the specific location in the memory. 5. The method of claim 1, wherein resetting the printing chip (1340) includes changing a value indicating the amount of printing material stored in the printing ink cartridge (1320). 6. The method according to claim 1, wherein resetting the printing chip (1340) includes changing the serial number stored in the printing chip (1340). 7. The method according to claim 1, wherein the printing ink cartridge (1320) is a toner cartridge. 8. The method of claim 1, wherein the identifier identifies or indicates one or more parameters of the printing ink cartridge (1320). 9. A system for resetting a printing chip (1340) mounted on a printing ink cartridge (1320), the system comprising: A printing apparatus (1310) is equipped with a printing ink cartridge (1320), wherein the printing ink cartridge (1320) has an associated identifier, and wherein the actual expected print output of the printing ink cartridge (1320) is one percentage point higher than the standard expected print output of a standard output ink cartridge manufactured for use in the printing apparatus (1310); and Processor (1330), which is configured as follows: It is determined that the printing ink cartridge (1320) installed in the printing device (1310) has an associated identifier; It has been determined that the predetermined conditions have been met; and The instruction is provided that the printing device (1310) should be turned off, wherein the shutdown of the printing device (1310) resets the printing chip (1340) after the predetermined condition has been met. 10. The system of claim 9, wherein the identifier is stored in a memory located on the printing ink cartridge (1320). 11. The system of claim 10, wherein the identifier is stored in a specific location in the memory. 12. The system of claim 11, wherein the Management Information Base (MIB) database is used to identify the specific location in the memory. 13. The system of claim 9, wherein resetting the printing chip includes changing a value indicating the amount of printing material stored in the printing ink cartridge. 14. The system of claim 9, wherein resetting the printing chip (1340) includes changing the serial number stored within the printing chip (1340). 15. The system according to claim 9, wherein the printing ink cartridge (1320) is a toner cartridge. 16. The system of claim 9, wherein the identifier identifies or indicates one or more parameters of the printing ink cartridge (1320).