CN111813351A - A printing task dynamic management method, device, main printer and system - Google Patents

Abstract

The embodiment of the invention provides a method and a device for dynamically managing a print task, a main printer and a system, wherein the method comprises the following steps: receiving a printing task sent by terminal equipment; when a dynamic forwarding printing instruction is received, judging the working state of the main printer; the working state comprises a ready state and a busy state; when the main printer is in a busy state, acquiring a printer permission list and the working states of all the slave printers in the printer permission list; wherein the printer permission list includes a master printer and at least one slave printer; pushing the print job to the slave printer in the ready state when at least one slave printer in the printer permission list is in the ready state; the name of the slave printer is returned to the terminal device. The invention reasonably distributes the printing tasks according to the working state of the printer, improves the printing efficiency, reduces the redundant configuration, not only provides the convenience for printing and using, but also reduces the maintenance cost.

Description

A printing task dynamic management method, device, main printer and system

technical field

The present invention relates to the technical field of printers, and in particular, to a method, device, main printer and system for dynamic management of printing tasks.

Background technique

At present, when the printers on the market are applied in an office environment, generally one printer is shared by multiple computers, or one computer is exclusively used for one printer. Before using the printer, the user needs to install the printer driver in the computer, and the shared printer also needs to be deployed in the local area network. When using, the user needs to select a specific printer to print. For the shared network printer, the IPP protocol based on the HTTP protocol is used. When the printer serves requests from multiple systems, it executes the printing tasks according to the order of the tasks received.

However, the shared printer receives printing tasks from multiple computers, and it needs to wait when there are many tasks, and the waiting time is uncertain. In particular, some users need to print a large number of files. Since the printer cannot process multiple printing tasks at the same time, users who need to print later may need to wait for a long time until the previous printing tasks are completed.

Moreover, for the mode in which the computer occupies one printer exclusively, it is necessary to configure an independent printer for each computer, which increases the equipment cost. When a user prints a small amount, the resource utilization rate of monopolizing one printer is not high.

SUMMARY OF THE INVENTION

In view of this, the purpose of the embodiments of the present invention is to provide a method, device, main printer and system for dynamic management of printing tasks, so as to improve the utilization rate of the printer.

An embodiment of the present invention provides a method for dynamic management of printing tasks, including the following steps:

Receive print tasks sent by terminal equipment;

When receiving the dynamic forwarding printing instruction, judge the working state of the main printer itself;

When the master printer itself is in a busy state, obtain the printer permission list and the working status of all slave printers in the printer permission list; wherein, the printer permission list includes the master printer and at least one slave printer, and the working status includes the ready state and busy state;

When at least one slave printer in the printer permission list is in the ready state, push the print task to the slave printer in the ready state;

Return the name of the slave printer to the terminal device.

Preferably, the master printer and the slave printer are connected through Ethernet, Bluetooth, Wi-Fi or USB.

Preferably, the following steps are also included:

When the main printer itself is in the ready state, execute the printing task;

Returns the name of the primary printer to the terminal device.

Preferably, it also includes:

When there are multiple slave printers in the ready state in the printer permission list, obtain the historical consumption of the plurality of slave printers; wherein, the historical consumption is the accumulated printing volume or the accumulated working time;

Pushing the print task to the slave printer with the smallest historical loss in the printer permission list;

Returns the name of the slave printer with the smallest historical loss to the terminal device.

Preferably, it also includes:

When the slave printers are all in a busy state, obtain the waiting time of all printers in the printer permission list;

Pushing the print task to the printer with the shortest waiting time in the printer permission list;

The name of the printer with the shortest waiting time is returned to the terminal device.

Preferably, the following steps are also included:

When there are multiple printers with the shortest waiting time in the printer permission list, obtain the historical loss of the multiple printers; wherein, the historical loss is the cumulative printing volume or the cumulative working time;

Pushing the print job to the printer with the smallest historical loss in the printer permission list;

The name of the printer with the smallest historical wear is returned to the terminal device.

The embodiment of the present invention also provides a printing task dynamic management device, including:

a print task receiving unit, configured to receive the print task sent by the terminal device;

a first working state obtaining unit, configured to judge the working state of the main printer itself when receiving the dynamic forwarding printing instruction;

The second working state obtaining unit is configured to obtain the printer permission list and the working states of all slave printers in the printer permission list when the master printer itself is in a busy state; wherein the printer permission list includes the master printer and at least one slave printer , the working state includes a ready state and a busy state;

a first print task push unit, configured to push the print task to the slave printer in the ready state when at least one slave printer in the printer permission list is in the ready state;

The name returning unit is used for returning the name of the slave printer to the terminal device.

Preferably, it also includes:

a waiting time obtaining unit, configured to obtain the waiting time of all printers in the printer permission list when the slave printers are all in a busy state;

a second printing task pushing unit, configured to push the printing task to the printer with the shortest waiting time in the printer permission list;

The second name returning unit is used for returning the name of the printer with the shortest waiting time to the terminal device.

An embodiment of the present invention further provides a main printer, including a memory, a processor, and a computer program stored in the memory and running on the processor, and the processor implements the dynamic printing task described above when the processor executes the program management method.

An embodiment of the present invention further provides a system for dynamic management of printing tasks, including: a terminal device, the above-mentioned master printer, and at least one slave printer, wherein,

the terminal device, configured to send a print task and dynamically forward a print instruction to the main printer;

the master printer, configured to obtain the working status of all slave printers in the printer permission list, and when at least one slave printer in the printer permission list is in a ready state, push the print task to the slave printer in the ready state; Wherein, the printer permission list includes a master printer and at least one slave printer, and the working state includes a ready state and a busy state;

The slave printer is configured to receive and execute the printing task pushed by the master printer.

In the above embodiment, when a dynamic forwarding print instruction is received, when the master printer itself is in a busy state, when at least one slave printer in the printer permission list is in a ready state, the print task is pushed to a ready state. from the printer. Therefore, when multiple printers are available, printing tasks can be reasonably allocated according to the working status of the printer itself, which improves printing efficiency, reduces redundant configuration, and achieves load balancing, which not only provides convenience for printing, but also improves printing flexibility. , and reduce maintenance costs.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore do not It should be regarded as a limitation of the scope, and for those of ordinary skill in the art, other related drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic flowchart of a method for dynamic management of printing tasks provided by the first embodiment of the present invention.

FIG. 2 is a schematic structural diagram of an apparatus for dynamic management of printing tasks according to a second embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a printing task dynamic management system according to a fourth embodiment of the present invention.

Icons: 201-printing task receiving unit; 202-first working state obtaining unit; 203-second working state obtaining unit; 204-first printing task pushing unit; 205-first name returning unit; 401-terminal device; 402 - Master Printer; 403 - Slave Printer.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In order to better understand the technical solutions of the present invention, the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

It should be understood that the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise.

It should be understood that the term "and/or" used in this document is only an association relationship to describe the associated objects, indicating that there may be three kinds of relationships, for example, A and/or B, which may indicate that A exists alone, and A and B exist at the same time. B, there are three cases of B alone. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

Depending on the context, the word "if" as used herein can be interpreted as "at" or "when" or "in response to determining" or "in response to detecting." Similarly, the phrases "if determined" or "if detected (the stated condition or event)" can be interpreted as "when determined" or "in response to determining" or "when detected (the stated condition or event)," depending on the context )" or "in response to detection (a stated condition or event)".

The "first\second" mentioned in the embodiment is only to distinguish similar objects, and does not represent a specific order for the objects. It is understood that "first\second" can be interchanged with specific order or sequence. It should be understood that the "first\second" distinctions may be interchanged under appropriate circumstances to enable the embodiments described herein to be practiced in sequences other than those illustrated or described herein.

As shown in FIG. 1, the first embodiment of the present invention provides a method for dynamic management of printing tasks, which can be executed by a main printer. Specifically, it can be executed by one or more processors in the main printer, and at least includes the following steps:

S101: Receive a print task sent by a terminal device.

In this embodiment, the main printer includes but is not limited to ordinary printers, network printers, cloud printers, etc. The main printer can communicate with one or more printers through wired or wireless methods such as Ethernet, Bluetooth, Wi-Fi, or USB. Connect from printers to form a cluster of printers to perform printing tasks cooperatively.

Wherein, the terminal device may be a smart device such as a mobile phone, a tablet computer, a desktop computer, a server, etc., for sending a printing task to the main printer.

In this embodiment, after the main printer receives the printing task sent by the terminal device, the printing task may be distributed to each printer in the above-mentioned printer cluster.

S102, when receiving the dynamic forwarding printing instruction, determine the working state of the main printer itself; wherein, the working state includes a ready state and a busy state.

In this embodiment, in order to improve the utilization rate of printing resources in the printer cluster, it is necessary to reasonably allocate printing tasks according to the dynamically forwarded printing instructions.

The dynamically forwarded print instruction may be a preset print task management program, and the user can query and configure the dynamically forwarded print instruction through a specific application tool such as a web page or an application program running on the terminal device, including setting the printer Basic printing parameters of each printer in the cluster, dynamic forwarding conditions of the master printer (such as forwarding sequence, etc.), task receiving conditions of slave printers (such as printing task receiving period, maximum monthly printing load, maximum number of print sheets allowed to be received), etc. Wait.

In this embodiment, when receiving a dynamic forwarding print instruction, the main printer can dynamically forward the received print task according to its own working state.

S103, when the master printer itself is in a busy state, obtain a printer permission list and the working status of all slave printers in the printer permission list; wherein the printer permission list includes a master printer and at least one slave printer.

S104, when at least one slave printer in the printer permission list is in a ready state, push the print task to the slave printer in a ready state.

In this embodiment, the printer permission list includes all printers in the printer cluster. When the master printer itself is in a busy state, the master printer pushes the printing task to the slave printers in the printer permission list, and the slave printer in the ready state will undertake the printing task. print job.

It can be understood that in other cases, when the master printer is abnormal, such as insufficient consumables, stuck, print head failure, etc., the print task can also be pushed to the slave printer in the ready state.

On the contrary, when the main printer itself is in the ready state, there is no need to perform dynamic forwarding, the printing task can be performed immediately, and the name of the main printer is returned to the terminal device.

It should be noted that, in some embodiments, the user can also choose whether to execute the dynamic forwarding printing instruction through the terminal device according to actual needs. When the user does not choose to execute the dynamic forwarding printing instruction, the printing task can be directly pushed to the main printer itself. in the print queue. In other embodiments, the master printer may directly push the printing task to one or more master printers or slave printers specified in the printer permission list, which is not specifically limited in the present invention.

In particular, when the print data in the print job contains a specific identifier, the master printer can push all or part of the print job to the slave printer in the ready state according to the identifier type.

S105. Return the name of the slave printer to the terminal device.

In this embodiment, after the dynamic forwarding of the print task is completed, the master printer sends the name of the slave printer that executes the print task to the terminal device, and prompts the user to execute the printer corresponding to the print task.

To sum up, when a dynamic forwarding print instruction is received, when the master printer itself is in a busy state, when at least one slave printer in the printer permission list is in a ready state, the print task is pushed to the slave printer in the ready state. printer. Therefore, when multiple printers are available, printing tasks can be reasonably allocated according to the working status of the printer itself, which reduces redundant configuration, improves printing efficiency, and achieves load balancing, which not only provides convenience for printing, but also improves printing flexibility. , and reduce maintenance costs.

On the basis of the above-mentioned embodiment, in a preferred embodiment, it also includes:

When there are multiple slave printers in the ready state in the printer permission list, obtain the historical consumption of the plurality of slave printers; wherein, the historical consumption is the accumulated printing volume or the accumulated working time;

Pushing the print task to the slave printer with the smallest historical loss in the printer permission list;

Returns the name of the slave printer with the smallest historical loss to the terminal device.

In this embodiment, when there may be multiple printers in the ready state in the print permission list, the printers that execute the print task may be determined according to the historical consumption of each slave printer.

The historical loss of the printer refers to the hardware loss of the printer, which can be characterized by cumulative printing volume, cumulative working time, monthly cumulative printing volume (lower than monthly printing load), and the like. As the printing volume of the printer increases or the printing time is prolonged, the historical wear and tear of the printer increases. Therefore, allocating printing tasks according to historical losses can achieve load balancing, avoid the situation that a certain printer in the printer cluster is in a working state for a long time and cause rapid component wear and tear, and can effectively prolong the average life of printers in the printer cluster.

On the basis of the above-mentioned embodiment, in a preferred embodiment, it also includes:

When the slave printers are all in a busy state, obtain the waiting time of all printers in the printer permission list;

Pushing the print task to the printer with the shortest waiting time in the printer permission list;

The name of the printer with the shortest waiting time is returned to the terminal device.

In this embodiment, when both the master printer and the slave printer are in a busy state, the waiting times of all the printers will be compared automatically, and the printer with the shortest waiting time will execute the printing task, so as to improve the printing efficiency. Wherein, the waiting time can be calculated by parameters such as the number, page number, size, printing progress and other parameters of printing tasks in the task queue of each printer.

On the basis of the above-mentioned embodiment, in a preferred embodiment, the following steps are also included:

When there are multiple printers with the shortest waiting time in the printer permission list, obtain the historical loss of the multiple printers; wherein, the historical loss is the cumulative printing volume or the cumulative working time;

Pushing the print job to the printer with the smallest historical loss in the printer permission list;

The name of the printer with the smallest historical wear is returned to the terminal device.

In this embodiment, when both the master printer and the slave printer are in a busy state and the waiting times of multiple printers are the shortest, the printer with the smallest historical loss executes the printing task, which can take into account the balanced load and printing efficiency of the printer, and perform the printing resource allocation. Reasonable configuration.

Referring to FIG. 2 , a second embodiment of the present invention provides a device for dynamic management of printing tasks, including:

A print task receiving unit 201, configured to receive a print task sent by a terminal device;

The first working state obtaining unit 202 is configured to judge the working state of the main printer itself when receiving the dynamic forwarding printing instruction; wherein, the working state includes a ready state and a busy state;

The second working state obtaining unit 203 is configured to obtain a printer permission list and the working states of all slave printers in the printer permission list when the master printer itself is in a busy state; wherein the printer permission list includes the master printer and at least one slave printer. printer;

a first print task pushing unit 204, configured to push the print task to the slave printer in the ready state when at least one slave printer in the printer permission list is in the ready state;

The first name returning unit 205 is configured to return the name of the slave printer to the terminal device.

Preferably, the master printer and the slave printer are connected through Ethernet, Bluetooth, Wi-Fi or USB.

Preferably, it also includes:

a waiting time obtaining unit, configured to obtain the waiting time of all printers in the printer permission list when the slave printers are all in a busy state;

a second printing task pushing unit, configured to push the printing task to the printer with the shortest waiting time in the printer permission list;

The second name returning unit is used for returning the name of the printer with the shortest waiting time to the terminal device.

Preferably, it also includes:

a first historical loss acquisition unit, configured to acquire the historical loss of multiple printers when there are multiple printers with the shortest waiting time in the printer permission list; wherein, the historical loss is cumulative printing volume or cumulative working time;

a third printing task pushing unit, configured to push the printing task to the printer with the smallest historical loss in the printer permission list;

The third name returning unit is used for returning the name of the printer with the smallest historical loss to the terminal device.

Preferably, it also includes:

The second historical loss acquiring unit is configured to acquire the historical loss of a plurality of slave printers when there are multiple slave printers in the ready state in the printer permission list; wherein, the historical loss is the accumulated printing volume or the accumulated amount of printing. operating hours;

a fourth printing task pushing unit, configured to push the printing task to the slave printer with the smallest historical loss in the printer permission list;

The fourth name returning unit is used to return the name of the slave printer with the smallest historical loss to the terminal device.

Preferably, it also includes:

a print task execution unit, used for executing the print task when the main printer itself is in a ready state;

The fifth name returning unit is used for returning the name of the main printer to the terminal device.

A third embodiment of the present invention provides a main printer, including a memory, a processor, and a computer program stored in the memory and running on the processor, the processor implements the above-mentioned printing task when executing the program Dynamic management method.

Referring to FIG. 3, a fourth embodiment of the present invention provides a dynamic management system for printing tasks, including: a terminal device 401, the above-mentioned master printer 402, and at least one slave printer 403, wherein,

The terminal device 401 is configured to send a print task and a dynamic forwarding print instruction to the main printer 402 .

The master printer 402 is configured to obtain the working status of all slave printers in the printer permission list, and when at least one slave printer in the printer permission list is in the ready state, push the print task to the slave printer in the ready state 403; wherein, the printer permission list includes a master printer 402 and at least one slave printer 403, and the working state includes a ready state and a busy state.

The slave printer 403 is configured to receive and execute the printing task pushed by the master printer 402 .

Exemplarily, the computer program of the present invention can be divided into one or more modules, and the one or more modules are stored in the memory and executed by the processor to complete the present invention. The one or more modules may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program in the implementation device. For example, the apparatus described in the second embodiment of the present invention.

The processor may be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (Digital Signal Processors, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf processors Programmable Gate Array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc., the processor is the control center of the printing method, and uses various interfaces and lines to connect the entire described implementation of the document printing method. various parts.

The memory can be used to store the computer program and/or module, and the processor implements the printing method by running or executing the computer program and/or module stored in the memory and calling the data stored in the memory. Various functions. The memory may mainly include a stored program area and a stored data area, wherein the stored program area can store an operating system, an application program required for at least one function (such as a sound playback function, a text conversion function, etc.), etc.; the stored data area can store Data (such as audio data, text message data, etc.) created according to the use of the user terminal, and the like. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory such as hard disk, internal memory, plug-in hard disk, Smart Media Card (SMC), Secure Digital (SD) card , a flash card (Flash Card), at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

Wherein, if the module implementing the user terminal is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention can implement all or part of the processes in the methods of the above embodiments, and can also be completed by instructing relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium, the computer When the program is executed by the processor, the steps of the foregoing method embodiments can be implemented. Wherein, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file or some intermediate form, and the like. The computer-readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM, Read-Only Memory) , Random Access Memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in the computer-readable media may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, the computer-readable media Electric carrier signals and telecommunication signals are not included.

It should be noted that the device embodiments described above are only schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical unit, that is, it can be located in one place, or it can be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. In addition, in the drawings of the apparatus embodiments provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines. Those of ordinary skill in the art can understand and implement it without creative effort.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Substitutions should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (10)

1. a printing task dynamic management method, is characterized in that, comprises the following steps: Receive print tasks sent by terminal equipment; When receiving the dynamic forwarding printing instruction, determine the working state of the main printer itself; wherein, the working state includes a ready state and a busy state; When the master printer itself is in a busy state, obtain the printer permission list and the working status of all slave printers in the printer permission list; wherein, the printer permission list includes the master printer and at least one slave printer; When at least one slave printer in the printer permission list is in the ready state, push the print task to the slave printer in the ready state; Return the name of the slave printer to the terminal device. 2 . The method for dynamic management of printing tasks according to claim 1 , wherein the master printer and the slave printer are connected through Ethernet, Bluetooth, Wi-Fi or USB. 3 . 3. The method for dynamic management of printing tasks according to claim 1, further comprising the steps of: When the main printer itself is in the ready state, execute the printing task; Returns the name of the primary printer to the terminal device. 4. The method for dynamic management of printing tasks according to claim 1, further comprising: When there are multiple slave printers in the ready state in the printer permission list, obtain the historical consumption of the plurality of slave printers; wherein, the historical consumption is the accumulated printing volume or the accumulated working time; Pushing the print task to the slave printer with the smallest historical loss in the printer permission list; Returns the name of the slave printer with the smallest historical loss to the terminal device. 5. The method for dynamic management of printing tasks according to claim 1, further comprising: When the slave printers are all in a busy state, obtain the waiting time of all printers in the printer permission list; Pushing the print task to the printer with the shortest waiting time in the printer permission list; The name of the printer with the shortest waiting time is returned to the terminal device. 6. The method for dynamic management of printing tasks according to claim 5, further comprising the steps of: When there are multiple printers with the shortest waiting time in the printer permission list, obtain the historical loss of the multiple printers; wherein, the historical loss is the cumulative printing volume or the cumulative working time; Pushing the print job to the printer with the smallest historical loss in the printer permission list; The name of the printer with the smallest historical wear is returned to the terminal device. 7. A device for dynamic management of printing tasks, comprising: a print task receiving unit, configured to receive the print task sent by the terminal device; a first working state obtaining unit, configured to judge the working state of the main printer itself when receiving the dynamic forwarding printing instruction; The second working state obtaining unit is configured to obtain the printer permission list and the working states of all slave printers in the printer permission list when the master printer itself is in a busy state; wherein the printer permission list includes the master printer and at least one slave printer , the working state includes a ready state and a busy state; a first print task push unit, configured to push the print task to the slave printer in the ready state when at least one slave printer in the printer permission list is in the ready state; The first name returning unit is used for returning the name of the slave printer to the terminal device. 8. The device for dynamic management of printing tasks according to claim 7, further comprising: a waiting time obtaining unit, configured to obtain the waiting time of all printers in the printer permission list when the slave printers are all in a busy state; a second printing task pushing unit, configured to push the printing task to the printer with the shortest waiting time in the printer permission list; The second name returning unit is used for returning the name of the printer with the shortest waiting time to the terminal device. 9. A main printer comprising a memory, a processor and a computer program stored on the memory and running on the processor, wherein the processor implements any one of claims 1-6 when the processor executes the program The printing task dynamic management method described in item. 10. A system for dynamic management of printing tasks, comprising: a terminal device, the master printer according to claim 9, and at least one slave printer, wherein, the terminal device, configured to send a print task and dynamically forward a print instruction to the main printer; the master printer, configured to obtain the working status of all slave printers in the printer permission list, and when at least one slave printer in the printer permission list is in a ready state, push the print task to the slave printer in the ready state; Wherein, the printer permission list includes a master printer and at least one slave printer, and the working state includes a ready state and a busy state; The slave printer is configured to receive and execute the printing task pushed by the master printer.

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