JPH045555B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an information output device, and particularly to an information output device using a printer.

Conventionally, various devices have been developed and proposed that output page information using, for example, electrostatic recording devices using laser beams, optical fibers, etc., inkjet recording devices, CRT display devices, and the like.

This type of information output device, for example, stores text information that is continuously input line by line from a storage device such as a magnetic tape (MT) or a disk when recording a text, By extracting information line by line, character codes are output continuously for each line in the raster scanning direction of a laser beam, etc., and the necessary character signals are generated accordingly to record the characters on recording paper. It is something to do.

When the storage unit of a conventional information processing device finishes recording one page and records text information for the next page,
A device with a storage section for only one page has the disadvantage that it is not possible to record the next page immediately after the recording of the previous page is completed, making it impossible to perform continuous high-speed recording. Furthermore, if a jam (paper jam) occurs during continuous recording, text information may be lost. If such a situation occurs, even if you remove the cause of the jam and restart recording, it may not be possible to record in order.

Furthermore, Japanese Patent Application Laid-Open No. 54-94846 has proposed a conventional printer having two page storage devices for reprinting in the event of a failure. However, in this method, the input/output control device of the printer reports the occurrence of a failure to the main control unit (host), and the host controls which pages are reprinted. The drawback is that detailed management is required and the interface between the host and the printer becomes extremely complex.

The present invention solves the above-mentioned drawbacks of the prior art. Specifically, the present invention includes a receiving means for receiving print code data from a main control section, a storage means for storing a plurality of pages of the print code data, and the storage means. and a control section storing a control program for controlling reception of the print code data by the receiving means and storage of the print code data in the storage means. , the control section receives an end signal indicating the end of printing from a recording means that performs recording based on the recording dot data converted by the converting means, and an output from a jam detection means for detecting a paper jam provided in the recording means. The information output device is characterized in that upon receiving the signal, the control section controls which page of print code data in the storage means is to be reprinted based on the received end signal and the output signal.

As described above, the present invention is equipped with a storage means for storing print code data for a plurality of pages, and the print code data is stored in the storage means by the end signal from the recording means and the output signal from the jam detection means. A control unit that controls storage controls which page of print code data in the storage means is to be reprinted.

Therefore, it is no longer necessary for the main control section to constantly monitor the occurrence of jams in the recording means, and the main control section can perform other tasks, and the control section on the recording side other than the main control section can perform post-processing after jamming. In other words, it is not only possible to control which page is to be printed next, but also the interface with the main control section can be simplified.

In this way, not only can the load on the main control unit and the interface between the main control unit and the main control unit be reduced, but there is no omission or overlapping of pages lost due to jams, and the page can be reproduced in the same way as if no jam had occurred.

Embodiments of the present invention will be described below with reference to the drawings.

First, the system configuration will be explained using FIG. 1.
The system is composed of a host computer 150, a controller 151, and a laser beam printer 156.

The Centronics interface 152 is for the controller 151 to receive text information from the host computer.

The controller 151 is controlled by a controller control section 153 consisting of two microcomputers CPU1 and CPU2.

The CG controller 154 is for converting coded character data into a dot pattern for recording. The interface 155 is for outputting dot pattern data to a laser beam printer 156.

157 is a basic memory consisting of completely erasable random access memory (hereinafter referred to as RAM), and a page for storing one page of text information.
It has two memories (PRM) and two line memories (LRM) for storing one line of text information, as well as an area for storing dot patterns of some characters and a memory area from the host computer. It has a table that converts text information specified by an external code into an internal code.

The basic memory 158 is a read-only memory (hereinafter referred to as
(referred to as ROM).

External memory (EXM) 159 to 162 is comprised of RAM and is an area for storing dot patterns such as kanji characters that are not normally used, and can be added as an option. Additionally, EXM1 has a table for converting external codes to internal codes.

Next, the processing method will be explained using the memory configuration formula shown in FIG. 2-1 and the general flowchart of CPU(1) and CPU(2) shown in FIG. 2-2.

The CPU(1), 209 and the CPU(2), 210 execute their respective processes asynchronously, and synchronize by handshaking by exchanging flags during data transfer.

First, the CPU (1), 209 is the font data RAM 204 that stores the dot pattern, and the EXM1~
By registering a character dot pattern (font) in EXM4, and converting the external code (ASCII etc.) corresponding to the registered character into an internal code and storing it in page memory 1 (PRM1) 202, Create text information.

It also handles various types of errors.

First, registration of dot patterns (fonts) will be explained.

After being reset, CPU (1) initializes and receives data from the host computer. This data is sent in the form of commands that follow a certain format. The CPU (1) analyzes this data, determines the command, and performs processing according to the command. When a command to register dot pattern data comes, the font data RAM 204 or EXM1
59 to 162, and write the address in which the dot pattern of each character is registered in the table. After the registration is complete, one page of text information is sent to the host computer 150.
It is sent from. I received this article information
The CPU (1) analyzes the information (code), refers to the table created at the time of dot pattern registration, creates an internal code, and writes one page of data to the page memory PRM1, 202 according to the format specified by the command in advance. Write information. Font data ROM
Since a table has already been created for the characters in 203, that table will be accessed. After creating one page of text information in this way, one page of information is transferred from PRM1 to PRM2.
Perform DMA (direct memory access) transfer. However, since CPU(1) and CPU(2) perform processing asynchronously, CPU(1)
Notify CPU(2) that DMA transfer will be performed, CPU(2)
I'm waiting until it's ready. and CPU(2)
DMA transfer is performed only after the preparation is complete. Bandshake between CPU(1) and CPU(2) is
This is done by exchanging flags through the control port 208 that can be commonly accessed by CPU(1) and CPU(2).

When the CPU (1) finishes transferring one page of text information to the CPU (2), it also receives the next page's information from the host computer 100 and performs processing to create a new page of text information in the PRM 1.

On the other hand, the CPU (2), 210, which has received one page of text information in the page memory PRM2, 207, stores one line of information from this information in the line memory LRM 206 in order to output it to the laser beam printer.

One page of text information contains character data, ruled line data, and instructions, so the CPU (2) retrieves these three types of data from the page memory PRM2 and outputs them to the laser beam printer. Convert to line memory LRM2 format
Write to 06.

CPU (2) repeats the process of creating one line of information for the number of lines and outputs one page of information.
You will have to wait for the next page of information to be transferred.

Further details of the apparatus are provided below.

FIG. 3 is a perspective view showing an outline of a recording device using a laser beam.

In FIG. 3, 301 is a laser oscillator;
2 is a reflecting mirror, 303 is a modulator, 304 is a beam expander, 305 is a rotating polygon mirror, 307 is a .theta. lens, 308 is a photosensitive drum, and 311 is a recording paper.

A laser beam oscillated by a laser oscillator 301 is guided to an input aperture of a modulator 303 via a reflecting mirror 302. The reflective mirror 302 is
It is inserted to bend the optical path to reduce the space of the device, and can be removed if it is not needed.

For the modulator 303, an acousto-optic modulation element using a known acousto-optic effect or an electro-optic element using an electro-optic effect is used.

In the modulator 303, the laser beam is modulated in intensity according to the input signal to the modulator 303.

In addition, when the laser oscillator 301 is a semiconductor laser, a gas laser, etc. that can perform current modulation, or an internally modulated laser that incorporates a modulation element in the oscillation optical path, The modulator 303 is omitted and the beam is guided directly to the beam extractor 304.

The beam diameter of the laser beam from the modulator 303 is expanded by a beam extractor while remaining a parallel beam. Furthermore, the laser beam whose beam diameter has been expanded is incident on a polyhedral rotating mirror 305 having one or more mirror surfaces. The polyhedral rotating mirror 305 is mounted on a shaft supported by a high-precision bearing (for example, an air bearing) and is driven by a motor 306 that rotates at a constant speed (for example, a hysteresis synchronous motor, a DC servo motor).
Accordingly, the horizontally swept laser beam 312 is imaged as a spot on the photosensitive drum 308 by the imaging lens 307 having the .theta. characteristic.
In a general imaging lens, when the incident angle of a light ray is θ, the position of the image on the image plane has the following relationship: γ=・tanθ−(1) (: focal length of the imaging lens), and this example As shown in FIG. 3, the incident angle of the laser beam 312 reflected by the fixed polyhedral rotating mirror 305 to the imaging lens 307 changes linearly with time. Therefore, the moving speed of the imaged spot position on the photosensitive drum 308, which is the image surface, changes non-linearly and is not constant. That is, the moving speed increases at the point where the angle of incidence increases. Therefore, when a row of spots is drawn on the photosensitive drum 308 by turning on the laser beam at regular time intervals, the spacing between the spots will be wider at both ends than at the center. To avoid this phenomenon, the imaging lens 307
is designed to have the characteristic γ=・θ −(2).

Such an imaging lens 7 is called a θ lens.

Furthermore, when collimated light is imaged into a spot by an imaging lens, the minimum diameter of the spot dmin is: dmin=λ/A − (3) where: focal length of the imaging lens λ: wavelength of the light used A: It is given by the entrance aperture of the imaging lens, and if λ is constant, a smaller spot diameter dmin can be obtained by increasing A. The previously mentioned beam extractor binder 304 is used to provide this effect. Therefore, the necessary
If dmin is obtained by the beam diameter of the laser oscillator, the beam extractor 304 is omitted. Beam detector 318 consists of a small entrance slit and a fast response time photoelectric conversion element (eg, a PIN diode). Beam detector 3
18 detects the position of the swept laser beam 312, and uses this detection signal to determine the start timing of an input signal to the modulator 303 for providing desired optical information on the photosensitive drum. As a result, errors in the division accuracy of each reflective surface of the polyhedral rotating mirror 305 and synchronization deviations of horizontal signals due to uneven rotation can be greatly reduced, and a high-quality image can be obtained. The tolerance range of accuracy required for the drive motor 306 is increased, and the drive motor 306 can be manufactured at a lower cost.

As described above, the deflected and modulated laser beam 312 is irradiated onto the photosensitive drum 308, visualized by a known electrophotographic processing process, and then transferred and fixed onto the recording paper 311 and output as a hard copy.

FIG. 4 shows an example of a control block diagram of the laser beam printer of FIG. 3 according to the present invention.

In the figure, 100 is a magnetic tape (MT), 101 is an interface for exchanging information signals with the MT 100, 102 is a first control unit, 1
03 is a data selector that switches data address bus lines, etc.; 104 is a page storage device that stores text information for one page; 105 is a second control unit that converts the contents of the first storage device into columns; and 106 is a data selector. , 107 and 107' are first and second column storage devices each having one column of information obtained by column conversion of the input text information by the second control unit 105. 108 is a data selector, 109 is a character generator, and this output signal 303S is input to the modulator 303 in FIG. 3, so that character information is formed on the photosensitive drum 308. 318S is the signal from the beam detector.

FIG. 5 shows an input format for text information, and FIG. 6 shows a state in which text information is stored on recording paper. An arrow 11 in FIG. 5 indicates an input direction, and input is made along the direction of the arrow 11. In FIG. 6, arrow 12 indicates the direction of output to the recording medium (main scanning direction), and arrow 13 indicates the direction of movement of the recording medium (sub-scanning direction).

Now, when text information is continuously input line by line, the information is received by the interface 101 and supplied to the first control unit 102. In this case, the first control unit 102 controls the data director 103,
The page storage device 104 is directed toward the first control unit 102. Then, the supplied text information for each line is sequentially 1
It is stored in the storage device 104. As a result, the page storage device 104 has an image corresponding to the input format shown in FIG.
Pages worth of text information are stored. When all text information for one page is stored in the page storage device 104, the first control section 102 switches the data selector 103 to connect the second control section 105 and the page storage device 104, and the second control section 105 to start printing. Then, the photosensitive drum 308 starts rotating,
The photosensitive surface of the photosensitive drum 308 is charged by the charger. In parallel with this, the second control unit 105 performs a column conversion operation (described later) from the text information in the page storage device 104 to perform one column's worth of information (in the case of the examples in FIGS. 5 and 6, "Kan", "X" ”, “1”, “A”) in the first column storage device 1
0
Transfer to 7'. In this case, the data selector 106
is connected to the second control unit 105 and the first column storage device 107, and the data selector 108 is connected to the character generator 1.
09 and the second column storage device 107' are combined.
The character generator 109 inverts the data selectors 108 and 106 in response to the first detection signal from the beam detector 318 in the recording device.
9 and the first column storage device 107 are coupled, and the second control section 105 and the second column storage device 107' are coupled. Naturally, the information in the first column of text information has been completely stored in the first column storage device 107 before this. At the same time, an interrupt is generated from the character generator 109 to the second control section 105.

At the same time as these processes, the character generator 109 transfers the last line character (in this example, "Kan") among the characters to be stored in the first column of the recording paper (text information) from the first column storage device 107 ) and select the corresponding character (“Kan”)
The dot information signal 303S of the first column is output from the character generator 109. This signal 303S modulates the modulator 303 and exposes a latent image corresponding to the dot information in the first column of the last row of characters among the characters to be recorded in the first column of the recording paper (text information). Formed on drum 308. Next, among the characters to be recorded as the first column of text information on the recording paper, the character in the second line from the last line (in this example, “X”)
The first column of dot information is output from the character generator 109, which modulates the modulator 303 to form its latent image on the photosensitive drum. This operation is performed by creating a latent image of each character (“Kan”, “X”, “1”, “A”) to be recorded in the first column of the recording paper (text information) for the dot information in the first column. This process is repeated until all the latent images of the characters in the first column of the recording paper (text information) are completely formed. For example, if the characters are formed by a 16 x 32 dot matrix, regardless of the number of characters in the first column of text information.
Repeated 16 times.

While this scanning is repeated 16 times, the second control unit 105 receives the second text information due to the previous interruption.
Each character to be recorded as a column is recorded in the page recording device 1.
04, the data are sorted while performing column conversion operations, and transferred to the second column storage device 107'. It goes without saying that this operation must be performed reliably during 16 scans. When the character generating device 109 finishes forming all the character information in the first column storage device 107 as a latent image in this way, that is, when the 16 scans are completed, the data selectors 106 and 108 are reversed again, and at the same time the second control section 105 generates an interrupt.

This time, the character generator 109 and the second column storage device 1
07' is coupled, the second control unit 105 and the first column storage device 107 are coupled, and the above repetition is executed.

As this repetition progresses, 1 in the page storage device 104
The second control unit 105 generates a completion signal to the first control unit 102 at the time when all of the text information for a page has been converted into a latent image.

If copying is required, the first control unit 102 instructs to start printing again and repeats the same process.

FIG. 7 shows another example of the control block diagram.

In FIG. 5, parts having the same functions as those in FIG. 4 are given the same numbers. Reference numerals 203 and 203' designate data selectors for switching bus lines for data addresses, and reference numerals 204 and 204' designate first and second page storage devices that each store one page's worth of text information.

Now, when text information is input consecutively line by line,
The information is received by the interface 101 and provided to the first control unit 102'. At this time, the first control section 102' controls the data selector 203, and the first control section 102' controls the data bus 21 from the first control section 102'.
1 and the data bus 212, and the text information is connected to the first
Written to page storage 204. Meanwhile, at this time, the data selector 203' connects the bus line 214 from the second page storage device 204' and the bus line 216 to the second control section 105'.

The text information on the first page input line by line in this manner is sequentially stored in the first page storage device 204 in a form corresponding to the input format shown in FIG.

All text information for one page is stored in the first page storage device 204
, the first control unit 102' switches the bus line selection of the data selector 203', and the data selector 203' selects the bus lines 215 and 216.
1 stored in the first page storage device 204.
The page information is output to the second control section 105'.
The second control unit 105' executes the column conversion operation described in FIG. On the other hand, the first control section 102' is completely free from the time when the control of the recording device is transferred to the second control section 105' until the recording is completed.
The page storage device 204' is also in an idle state. Therefore, the first control section 102'
3' connects bus lines 215 and 216, and at the same time, data selector 203 connects bus lines 211 and 213. As a result, at the same time as the first page information stored in the first page storage device 204 is output, the first control unit 102' outputs the second page information to the second page storage device 204' via the interface 101. It becomes possible to memorize.

When the reception of the text information of the second page is completed and the recording completion is confirmed from the second control unit 105', the data selectors 203 and 203' are switched again, and the second page memory The device 204' and the first control section 102' are coupled to the first page storage device 204, and a print instruction is issued to the second control section 105', and this operation is repeated.

Since writing and reading of data can be performed in parallel in this way, efficient data transfer and continuous recording without waiting time are possible.

The column conversion method performed by the second control units 105, 105' will be described. page storage devices 104, 204,
Text information is input line by line to 204' as described above. Here, it is assumed that a maximum of 132 characters are input per line (this number of characters is _Inax ) and a maximum of 66 lines per page (this number of lines is _Jnax ). Therefore, the format of the input page information is as shown in FIG. 8th
Each block BK in the figure is organized by letter, and the numbers within the block BK indicate the order in which they are input. This input information is stored in page storage devices 104, 204, 204'.
For example, as shown in FIG. 9, the data are stored sequentially from the first row.

To convert this into columns, C _o = (66-V)・132+W...(1) V: Number of columns after column conversion 1, 2,..., 66 W: Number of rows after column conversion 1, 2, ...132 C _o : Numerical numbers 1, 2, ... in block BK
8712 In other words, the numerical number C _o in block BK is applied to row W and column V after column conversion. Therefore, first W=1
output by changing V sequentially from 1 to 66,
Next, set W=2 and output by changing V from 1 to 66. If this is repeated until W=66, the output as shown in FIG. 10 can be obtained.

If this is extended to a general formula, C _o =(J _nax −V)·I _nax +W (2) holds true. According to formula (2), W=1 V=1, 2, 3,..., J _nax W=2 V=1, 2, 3,..., J _nax 〓 〓 W=I _nax V=1, 2, 3 , ..., J _nax, column conversion can be performed.

With such a configuration, the first control section 10
2,102' converts the input code to internal code,
Since information is stored in the page storage units 104, 204, and 204', and the second control unit performs column conversion, an efficient control system can be formed.

For example, if you want to input kanji or special shapes,
If a code system compliant with JIS C6228-1975 ``Extension of Codes for Information Exchange'' is input from the outside, just interpreting its meaning becomes a considerable burden. Furthermore, column conversion operations are performed and page storage devices 104, (2
04, 204'), it would take a considerable amount of time from the start of code input until the print instruction is issued, which is undesirable in terms of overall efficiency (throughput). In this embodiment, regardless of whether it is in portrait or landscape mode, the pages are stored in the order of the codes input to the page storage device, so pages can be stored in the minimum amount of time, and when page storage is completed, the print state immediately returns. Since the column conversion is performed through gaps in the recording system where there is sufficient time, the overall efficiency (throughput) is improved. Furthermore, by having a plurality of page storage devices, reception of text information for the next page is completed before recording of the previous page is completed, so that the maximum throughput can be obtained.

Note that when column conversion is not required (recording in vertical mode), the second control unit 105, 105' converts the information input row by row into the page storage devices 104, 204, 204' as it is, row by row. column storage device 107,1
Transfer to 07'. That is, column storage devices 107, 10
7' stores information for one line. The vertical and horizontal mode signals are transmitted through the interface 101 and the first control unit 10.
The signal is input from the MT 100 to the second control unit 105, 105' via 2, 102'. Second control unit 10
5, 105' determines whether or not to perform column conversion by determining the vertical and horizontal mode signals.

The output device has been explained above, and FIG. 11 shows a more easily understandable version. In FIG. 11, the processing procedure begins with the host computer 6.
One page of text information is output from 01, synchronized with the microcomputer of the first control unit (CPU1) 606 through an interface 602, and the received text information is stored in the first page storage device 603.
Upon receiving one page of text information, the CPU 1606 collects the information in the first page storage device 603 and transfers it to the second page storage device 604.

The second control unit (CPU2) 607 outputs the information in the second page storage device 604 to the recording device 605, and the recording device outputs a character code for each line, generates a necessary dot signal according to the character code, and performs recording.

Since the CPU 1606 and the CPU 2607 execute processing asynchronously and are synchronized only when transferring data between the page storage devices, the CPU 2607 executes processing in the second page storage device 6.
While outputting the information of 04 to the recording device 605
The CPU 1606 can perform parallel processing to import data from the host computer 601 to the first page storage device 603. The CPU 1 mainly performs the process of registering characters and storing text information in the first page storage device 603 according to the format, and the CPU 2607 performs processing to store the text information in the first page storage device 603.
1 from the text information in the second page storage device 604.
Processing is performed to output each line to the recording device.

As described above, CPU2 controls the recording device.
In addition to these basic controls, the controls in the CPU1 and CPU2 include error detection and associated error processing.

These errors include errors related to software and farm (SYNTAX) managed by CPU1.
ERROR, CG MEMORY FULL) Hardware errors (PARTY ERROR, HARD)
ERROR) etc., and furthermore, the CPU1 related to this invention
There is a JAM ERROR (paper jam in the printer) managed by .

In this embodiment, the CPU 1 directly obtains error information from the recording device 605 and performs control to prevent missing or overlapping pages in the event of a paper jam (JAM).

For this purpose, the first control section 606 has an auxiliary storage section (auxiliary page storage device 609) for storing text information for several output pages.

FIG. 12 shows the contents of each device in the system of FIG. 11. 601 in Figure 11
701 and 603 correspond to 702, 604 to 703, 605 to 704, and 609 to 705 in FIG. 12, respectively.

First, the auxiliary page storage device 705 of the first control unit stores five pages of text information of different types from PAGE1 to PAGE5, and the number of copies of each page is stored in the auxiliary page storage device 705. There are also 5 counters from COPY COUNT1 to COPY COUNT5.
(In this embodiment, the counter is stored in the auxiliary memory, but it can also be stored in the first control unit and the second control unit.) The text information that is actually recorded is PRINT1→
The order is PRINT2 → PRINT3 → PRINT4, but
In the case of copying, the information of PRINT3 in 703 is sent to PRINT2 under the control of the second control unit 607 for the number of times of copying.

The jam processing will be explained using the block diagram of FIG. 12 and the table of FIG. 13, assuming that pages 1 to 5705 are recorded continuously.

First, let's assume that the text information for each page is included in PRINT1 to PRINT4 as shown in the table in Figure 13.

The first control section monitors the print end signal from the recording device and senses whether a jam error has occurred before outputting one page of text information and outputting the printout signal to output that information.

There are three types of jam errors: JAM3, which is the jam that is outputting the information of PRINT1, JAM2, which is the jam that is outputting the information of PRINT2, and JAM1, which is the jam that is outputting the information of PRINT3.

The first control unit 606 outputs the text information of each page sequentially sent from PAGE1 to the recording device 704 and also outputs it to the auxiliary page storage device 705. Each time a print end signal is detected, the counter COPY COUNT is decremented, and if the output of text information for that page is successfully completed, the information in the auxiliary page storage device is also cleared.

In this process, if a jam occurs, the error information sent from the recording device and the current COPY
Compare COUNT and COPY COUNT on restart
The count number is corrected and the data is created in the recording device 704 again.

For example, if we consider the case of state 1 in Figure 13, if JAM3 is returned as error information, the first
The control unit retransmits the data from PAGE1. If JAM2 is returned, the output of PAGE1 has already finished, so it is retransmitted from PAGE2. this is,
The return of JAM2 means that JAM3
This is because PRINT1 means that JAM does not occur and the process ends normally. Furthermore, if JAM1 is returned, the output of PAGE1 and PAGE2 has been completed, so retransmission starts from PAGE3.

In the following state 2, if JAM3, PAGE1
Leave the COPY COUNT1 count as is.
Resend from PAGE1. In the case of JAM2, since the first page of PAGE is finished, COPY of PAGE1
Decrease the count number of COUNT1 by 1 and retransmit from PAGE1. For JAM1, COPY of PAGE1
Since the count number of COUNT1 is 2 and the output of PAGE1 has finished, it is retransmitted from PAGE2.

In state 3, if it is JAM3, retransmit from PAGE1. For JAM2, COPY of PAGE2
Leave the count number of COUNT2 as is and move to PAGE2
Resend from. For JAM1, PAGE2
Subtract 1 from the count number of COPY COUNT2
Resend from PAGE2.

In state 4, if it is JAM3, retransmit from PAGE1.

For JAM2, COPY COUNT1 of PAGE1
Decrease the count number by 1 and retransmit from PAGE1.
If it is JAM1, reduce the count number of COPY COUNT1 of PAGE1 by 2 and play from PAGE1.

In this example, an electrophotographic recording device using a laser beam as an output device was used, but an electrophotographic device using an OFT (optical fiber tube) or a needle electrode instead of a laser beam, or It can be implemented in an output method such as an inkjet.

If the processing described above is carried out, it is possible to obtain the same output as normal even when a jam occurs. Furthermore, a feature of this embodiment is that the main control section may be smaller in size, since it does not require a program for jam processing on the main control section side or an auxiliary storage device, compared to a case where the main control section has an auxiliary storage device. . In addition, when data is transferred from the main control unit side, the transfer speed may be slow and jam processing may take time, but if it is stored internally as in this embodiment, this can be handled by internal form and hardware. This makes it possible to quickly deal with jams.
Also, compared to the case where the auxiliary storage device is provided on the CPU2 side that controls the character generation section and the printing section, when the auxiliary storage device is provided on the CPU1 side of this embodiment, the data is transferred from the main control section to the first page storage device on the CPU1 side. It manages the status of whether it is before, in the middle of, or has finished, and depending on this status, it may be necessary to change the type of data output after JAM.
The program for this operation is less complicated because it can be judged and dealt with by oneself.

[Brief explanation of drawings]

FIG. 1 is an overall system configuration diagram, FIG. 2-1 is a memory configuration diagram of the system, and FIG. 2-2 is a system flowchart. FIG. 3 is a perspective view of a recording device using a laser beam, FIG. 4 is a first control block diagram of the recording device of FIG. 3, FIG. 5 is a diagram showing the input form of text information, and FIG. FIG. 7 is a second control block diagram of the recording device of FIG. 3; FIGS. 8 to 10 are diagrams for explaining the column conversion method; FIG. 11 is a block diagram of the system configuration, FIG. 12 is a system configuration diagram for explaining jam processing, and FIG. 13 is a diagram summarizing jam states.

Claims (1)

[Scope of Claims] 1. Receiving means for receiving print code data from the main control unit; Storage means for storing the print code data for a plurality of pages; Conversion for converting the code data in the storage means into dot data for recording. and a control unit storing a control program for controlling reception of print code data by the receiving unit and storage of the print code data in the storage unit, and the control unit stores the record converted by the converting unit. The control section receives an end signal indicating the end of printing from a recording means that performs recording based on the dot data for printing, and an output signal from a jam detection means that detects a paper jam provided in the recording means, and the control section detects the received end signal. and an information output device that controls which page of print code data in the storage means is to be reprinted based on the output signal.