JPH09277660A - Printer control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance a page recovery function and a printer override function for a printer system as well as other functions such as duplication. SOLUTION: A printer control system 20 including a data control part 22 and a process conditions setting part 24 is provided between a printer driver 4 and a printer device 6. The data control part 22 processes print data to be sent to the printer device 6. For example, if a line feed code is included in the print data, a CR code is added to a position before the line feed code by the residual capacity amount of a data buffer for the printer device 6 and is sent to the data buffer. In the data buffer, next page data is not stored immediately after the line feed code, and instead, a page is recovered using data under printing at the time of abnormality occurrence. When the operation is performed in the override mode, the on-line state of the printer device 6 is not reported to a host software so that the same page is not recovered a plurarity of times. Data is printed plural times at the same position on a printing paper by alternately sending n-th line print data and the CR code a plurarity of times.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer control system for controlling a serial printer having a data buffer.

[0002]

2. Description of the Related Art Conventionally, serial printer devices (including line printers, etc.) for controlling print data line by line have been known, and as such printer devices, printer devices such as impact dop printers, thermal transfer printers, ink jet printers, etc. There is. These printers are provided with a data buffer, and by storing a certain amount of print data in the data buffer, various printing processes on the computer side and the printer side are speeded up. It should be noted that the interface of the printer device is a specification assuming a serial printer, such as ESC / P
(Epson Standard Control for Printer TM EPSON) interface is known. In the following, a system using this ESC / P as an interface of the printer will be described as an example.

In such a printer control system for controlling the printing process in the printer device, a recovery function by the printer device itself is not provided when a paper end error occurs due to paper shortage or the like. Therefore, when an abnormality occurs in the printer device, the system side such as the host computer performs page-by-page recovery. Here, the recovery function is a function for guaranteeing the final output of normal print data even if an incomplete page is output when an abnormality occurs.

A typical configuration example of a conventional printer control system having a recovery function will be described below with reference to FIG.

In FIG. 6, 1 is a host computer,
2 is a personal computer, 3 is a terminal emulator application, 4 is a printer driver, and 6 is a printer device.

In a personal computer (hereinafter, referred to as a personal computer) 2 that has a terminal emulator application 3 (hereinafter, simply referred to as application 3) and operates as a host terminal, print data transferred from the host computer 1 is temporarily stored in the application 3 Is received, the application 3 executes a process as needed, and passes it to the printer driver 4.

The printer device 6 is provided with a data buffer having a predetermined capacity, and print data output from the printer driver 4 is temporarily stored in this buffer and printed line by line on continuous paper or the like.

Here, for example, a serial printer device (E
The SC / P) has a data buffer of a predetermined capacity, but does not have the recovery (page recovery) function of the printer itself as described above. Therefore, when abnormal information such as paper end is reported from the printer device 6 of FIG. 6, the application 3 detects this and notifies the abnormal information to the host computer 1 and various recovery ( For example, page recovery) processing is executed.

For example, when the paper end status is reported from the printer device 6, the output of print data from the printer driver 4 is temporarily interrupted at that time. When the printer device 6 is restored, that is, when new printing paper is set in the printer device 6, the application 3
Alternatively, the application on the host computer 1 resends the print data to the printing device 6 from the beginning of the page for which the output is interrupted. This allows
Recovery, so-called page recovery, is performed.

[0010]

However, the conventional printer system has the following problems.

<1> Problems Concerning Page Recovery Function In the conventional page recovery function, after sending one page of print data to the data buffer of the printer device 6,
Further, if an error occurs in the state where printing of all the print data of the page is not completed in the printer device 6, there occurs a problem that the page recovery cannot be correctly executed.

Such a problem is that even if the print data for the page being printed remains in the data buffer, the application 3 recognizes that the print data for the page has already been transferred to the data buffer. Occurs when

A specific example of the case where page recovery cannot be accurately performed will be described below with reference to FIGS. 7 and 8.

FIG. 7 shows a printing state on the printing paper when the printer device detects the paper end. FIG. 7 shows an example in which continuous paper is used as the printing paper 7, and print data A, print data B, and print data C for each page that are sequentially output to the printer are printed on the printing paper 7 in this order. It is printed in each page area (reference numerals 8, 9, 10 in the figure). In the printer apparatus, a paper end sensor is arranged in front of the print head in the paper feeding direction, and when the paper end sensor detects the paper end, the printing process is interrupted accordingly. In FIG. 7, the paper end of the paper 7 is detected during the printing of the data C, and the printing process is performed by the data C.
Is stopped during printing.

FIG. 8 shows a state in the data buffer of the printer when the printing process is interrupted during the printing of the data C. Reference numeral 11 in the drawing indicates a data buffer. The data buffer 11 stores the remaining portion 14 of the print data C being printed and the beginning portion 15 of the print data D of the next page. The remaining portion 14 of the data C is the remaining data obtained by removing the printed data 10 of the data C shown in FIG. 7 from the print data C for one page. Also, the first part 1 of the data D
5 is print data of the head portion of the page stored in the data buffer 11 of the print data D of the next page sent from the personal computer 2 of FIG.

Here, it is assumed that the print data A to print data D all have an FF code (page break code) added to the end of the data. In this case, a page break code exists at the end of the remaining portion 14 of the print data C. Data buffer 1 by detecting paper end
After the state in 1 becomes as shown in FIG. 8, the printing paper 7 is newly set in the printer device. Then, when printing is restarted, the remaining portion 14 of the data C is first sent from the data buffer 11 to the mechanical portion of the printer device, and this is printed on the paper 7. Remaining part of data C 14
When all are printed, the printer device feeds the paper 7 in the feeding direction by a predetermined distance based on the page feed code added at the end of the data C.

When the next page of the continuous paper 7 is conveyed to a predetermined print start position, printing of the first portion 15 of the data D sent from the data buffer 11 is started. Here, for example, as the application 3 in FIG. 6, since the print data D was being sent to the data buffer when printing was interrupted, page recovery for this print data D is executed. Therefore, the data D shown in FIG.
The application 3 sends the data following the first 10 parts 15 of the above to the data buffer 11. Therefore, the normal printing is performed for the data D and thereafter.

However, as is clear from the above description, the data C is divided into two pieces of paper and printed, which means that normal printing is not performed. Further, the upper software recognizes that the data C has been sent normally. Therefore, with the conventional page recovery function, page recovery cannot be performed on the data C for which printing has been interrupted, and the data C cannot be printed normally.

<2> Problems Regarding Printer Override Function The printer override function is a function for forcibly executing printing once when the printer device detects the paper end. When this function is provided in the printer control system and the function is enabled, generally, the printer device is once brought into an offline state by paper end detection, and the paper end is reported to the upper application. When forced printing is executed line by line, the printer device goes online, but when printing one line, the paper end is detected again and the printer goes offline. Therefore, the online state of the printer is reported line by line to the upper application until the forced printing of all the remaining lines of the page being printed is completed.

Referring to FIG. 7 as an example, the override function becomes effective when the paper end is detected,
The remaining data of the data C in the middle of printing is sequentially sent out from the data buffer and printed on the continuous paper 7 line by line. Therefore, the print data C can be printed normally, and the drawback of the page recovery function is improved.

However, once the paper end is detected, it is reported to the application 3 in FIG. 6 or the application on the host that the printer device is online every time one line is printed. Page recovery will be performed each time. As a result, the data D is printed out the number of times the overriding is performed.

<3> Copying ability The copying ability of the printer depends on the performance of the printer itself. The copying ability of the printer mentioned here is the copying ability for a plurality of sheets stacked in the impact dot printer. Since this copying ability is limited by the maximum pressing force of the print head against the paper, the print quality for the bottommost paper of the duplicated copy papers is sufficient for the purpose of use depending on the paper conditions or the characteristics of the printer device. You may not be satisfied.

However, the conventional printer system cannot meet such a request, and there is no coping method other than changing the printing paper.

The printer control system according to the present invention appropriately supports the page recovery function, the printer override function, the copying ability, etc. without changing the standard of the printing system or the printer device, and substantially improves these performances. The purpose is to do.

[0025]

The printer control system according to the present invention has the following features.

(1) First, the present invention is a printer control system for controlling a serial printer having a data buffer. The system has a data control unit that is interposed between the printer driver and the serial printer device and controls the print data supplied to the data buffer of the serial printer device.

The printer control system further includes a processing condition setting unit for setting processing conditions including the unique information of the serial printer or the print processing information. The data control unit controls the print data based on the processing conditions.

With such a configuration, for example, in the support of the page recovery function, the data control unit determines whether the print data includes a page break code, and the page break code is stored in the data buffer of the printer. It is prohibited to store the data of the next page following. This makes it possible to execute page recovery in the event of an abnormality from the print data being printed.

Further, in the support of the printer override function, for example, when the remaining line of the page being printed is printed after the occurrence of an abnormality in the printer, the data that the printer device is “online” is canceled and the same data is obtained. Prevent pages from being recovered multiple times.

Further, in order to improve the copying ability, for example, the data control unit alternately sends the print data of the nth line and the carriage return code to the data buffer of the printer apparatus a plurality of times, so that the same print paper is printed. The print data of the nth line is printed at the position a plurality of times m times. Therefore, the copying ability of the printer device can be improved.

(2) In the printer control system having the above-mentioned configuration (1), the data control unit stores the page break code and the print data for the next page in the data buffer of the printer device. Prohibit that.

More specifically, the data control unit generates dummy data when detecting a page break code from print data, and adds dummy data before the page break code according to the data buffer capacity of the printer. And outputs it to the data buffer. The data buffer is filled with print data for the page being printed and dummy data.

Further, the dummy code is a carriage return code.

With such a system configuration, when an abnormality is detected in the printer, page recovery is executed for the print data of the page which was being printed at the time of the abnormality, and the print data is output to the printer. It is sent to the data buffer of and can be printed.

(3) In the printer control system having the above-mentioned configuration (1), a printer having an override function of forcibly printing out the remaining lines of a page in the middle of printing when the paper end is detected by the printer device. When the printer control system is used in the system, the printer control system enables the override function when the paper end is detected, and the data control unit uses the override function during the forced printing process of the remaining lines. It is characterized in that the "page recovery request signal" that occurs in the above step is canceled.

The "page recovery request signal" is, for example,
This signal is generated when the printer is online during forced printing by the override function.

With such a system configuration, as described above, in the printer override function, it is possible to prevent page recovery from being executed a plurality of times for the page next to the page that was being printed when the abnormality occurred.

(4) In the printer control system having the above-described configuration (1), when m times (m is a natural number) printing processing on the printing paper is requested, the data control unit performs n ( (n is a natural number) The print data of the (n) th line is stored, the stored print data of the nth line is used, and a carriage return code is inserted between each of the m print data of the nth line. Send to. Then, after the m print data of the nth row is transmitted in this manner, the carriage return code and the line feed code are further transmitted. The "carriage return code" is a print control code for returning the print head of the printer to the initial position, and the "line feed code" is a print control code for feeding the print paper by one line. Is.

By thus functioning the data control section of the printer control system, the printing ability of the printer device, in particular, the copying ability for a plurality of sheets in the impact dot printer, can be achieved without changing the printer device or sheets. Can be improved.

[0040]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention (hereinafter, referred to as embodiments) will be described below with reference to the drawings. Note that the same reference numerals are given to portions corresponding to the drawings described above, and description thereof will be omitted.

[Configuration of Printer System] FIG. 1 shows a configuration example of a printer system including the printer control system of this embodiment. A feature of this embodiment is that the personal computer 2 is provided with a printer control system 20 between the printer driver 4 and the printer device 6. The printer control system 20
The printer control system 20 including the data control unit 22 and the processing condition setting unit 24 may be configured by either software or hardware.

As will be described later, the data control unit 22 controls the output timing of the print data to be transmitted to the data buffer of the printer device 6, and processes the print data and the print control data as necessary. By the operation of the data control unit 22 as described above, the page recovery function and the printer override function executed by the application 3 and the application of the host computer 1 are supported. Further, the data control unit 22 realizes an improvement in printing ability (for example, copying ability) that does not depend on the performance of the printer device 6.

The processing condition setting unit 24 includes the printer device 6
Specific information (for example, data buffer capacity) and printing conditions (for example, the number of copies in the impact dot printer) are automatically or manually set. The setting unit 24 can be realized by a program that can be input by the user using the screen and keyboard of a personal computer, for example.

[Operation of Printer Control System] <Operation 1> Support of page recovery function When the page recovery function is supported, the data control section 22 of the printer control system 20 should make up for the drawbacks of the page recovery function described above. Done by Particularly, in this case, the data control unit 22 equivalently cancels the data buffer in the printer device 6 to support the page recovery function.

Problems to be Solved by the Invention As described in the item <1>, in the conventional page recovery function, the problem that the print data in the middle of printing cannot be normally printed is in units of the data buffer of the printer device 6. This occurs when data including the end of a page, in other words, data indicating the end of a unit page, for example, a page break code (FF code) is buffered.

Therefore, in the present embodiment, the data control unit 1
2 indicates that "the page break code at the end of the print data for each unit page (the output unit divided by the page break code) is buffered in the data buffer of the printer device 6, and the page break code is followed by the next page. Print data is buffered ”. That is, the data control unit 12 “equivalently cancels the data buffer in the printer device 6”. By the data control unit 22 performing such an operation, page recovery can be performed even for print data of a page that is in the middle of printing when the paper end occurs.

FIG. 2 shows a processing flow performed by the printer control system 10 to support such a page recovery function.

It is assumed that the data buffer capacity of the printer device 6 is input in advance to the processing condition setting unit 24 of the printer control system 20. Therefore, thereafter, the data control unit 22 refers to the data buffer capacity input to the setting unit 24 to perform data control.

For example, the host computer 1 issues a print command to a sheet, the print data is sequentially sent from the printer driver 4 line by line by the operation of the application 3, and the printer control system 20 receives the print data (S1). ).

The data control unit 22 determines whether the received print data is a page feed code (FF) (S).
2). If the print data is not the page feed code, the data control unit 22 reports a reception completion report (ACK) to the printer driver 4 (S6), and sends the received print data to the data buffer of the printer device 6. (S7).

On the other hand, when the received data is the page break code (S2), the data control unit 22 reports the reception completion (AC) to the printer driver 4 regarding the page break code.
K) is reserved. Then, based on the data buffer capacity obtained from the processing condition setting unit 24, dummy data for the remaining capacity of the data buffer is generated following the actual print data, and this dummy data is sent to the data buffer of the printer device 6 (S3). ). As the dummy data, for example, a CR (carriage return) code for returning the print head of the printer device 6 to a predetermined initial position is used. The printer device 6 does not perform any special operation once it has returned to the initial position even after receiving the CR code a plurality of times in succession.
That is, the print head or the like does not operate mechanically. If a code such as a CR code that does not cause the printer device 6 to perform a special operation even if it is received a plurality of times is used as the dummy code, the operation speed of the printer device 6 is reduced and the print quality is hardly degraded. Unthinkable.

At the time of sending the dummy code, the printer device 6
If more abnormality detection (for example, paper end (PE)) is not reported (S4), the page feed code that has been held for the printer driver at the time when the transmission of the dummy data corresponding to the remaining capacity of the data buffer is completed. ACK for receipt of
Report (S6). After reporting the ACK, the data control unit 22
Sends this page feed code to the printer (S
7). When the page break code is supplied to the data buffer, the printer device 6 performs a page break operation by feeding a predetermined amount of printing paper based on this code. Then, the data control unit 22
After sending the page break code, it sends the print data of the next page to the data buffer, and the printer device 6 prints this print data on the new page after the page break.

When abnormality detection (paper end or power off) is performed in the printer device 6 at the time of sending the dummy data to the printer device 6 (S4), the CR code sending process is terminated at that time, and the printer driver An error of the printer device 6 is reported to the printer 4 (S5). Further, ACK for the reception of the page break code is reported to the printer driver 4 (S6), and the page break code is transmitted to the printer device 6 (S7). The printer driver 4 reports an abnormality such as the paper end of the printer device 6 before the ACK report for the page feed code. Therefore, for example, when the dummy data is being sent to the data buffer subsequent to the print data C, the application 3 determines that an abnormality has occurred during the sending of the print data C. Therefore, the application 3 executes page recovery for the print data that is actually being printed by the printer device 6.

The recovery operation will be described below with reference to FIG.
A conceptual explanation will be given with reference to FIG.

In the printer system of this embodiment,
The print data A, the print data B, the print data C, and the print data D are transmitted to the data buffer of the printer device 6 in this order. Then, as shown in FIG. 7, it is assumed that the paper end is detected while the print data C is being printed on the paper 7 in the printer device.

FIG. 3 shows the state in the data buffer of the printer at the time of this paper end detection. The data buffer 11 contains the remaining portion 12 of the print data C being printed. Then, between the end of the actual print data C and the page break code for this page, the dummy data 13 for the remaining capacity of the buffer is stored. Therefore, the data buffer 11 is filled with the dummy data 13 except for the remaining portion 12 of the print data C, and the page break code for the print data C is stored in the data buffer 11 followed by the print data D of the next page. Is prohibited.

When the paper end state is reached in the state as shown in FIG. 3, the application 3 or the application on the host is notified of the paper end before the page feed code ACK report of the print data C as described above. It is reported, and this paper end is notified as occurring while printing the print data C. Therefore, page recovery is performed from the print data C by these applications.

Therefore, when a new paper 7 is set and printing is restarted after the paper end occurs, the data is retransmitted from the beginning of the print data C by the application, and this is sent to the data buffer of the printer device 6 and the print data is sent. C is printed on a new sheet from the beginning. Therefore, the page recovery of the print data C is accurately performed.

<Operation 2> Support of Printer Override Function FIG. 4 shows the processing contents when the printer control system of the present embodiment supports the printer override function.

In the printer system shown in FIG. 1, when a normal printing operation is started, print data is created based on the command of the application 3 or the application of the host computer 1, and the print data is sent from the printer driver 4 to the printer control system 20. To be done. The printer control system 20 uses the print data A,
When B, C, D, ... Are supplied line by line in this order, they are sequentially sent to the data buffer of the printer device 6. Then, the printer device 6 sequentially prints the print data A, B, C, ... For each page as shown in FIG.

Here, as shown in FIG. 7, when the printer device 6 detects the paper end during printing of the print data C, the printer device 6 is brought into an offline state (S1).
1).

The data control unit 22 detects the paper end in the printer device 6, that is, the online state of the printer device 6 (S12). By the paper end in the printer device 6, the data control unit 22 requests the application 3 to execute the printer override, for example, and the printer override is executed (S13).

In the printer override, when the paper end is detected, the remaining lines on the page being printed are forcibly printed line by line. The printer device 6 is in the "online" state during the printing of each line. After printing one line, the printer device 6 again detects the paper end and enters the "offline" state, and when printing the next one line, the printer device 6 is forced again into the "online" state.

The data control unit 22 measures a fixed time from the first online (S13) by the execution of the override, and when the fixed time elapses (S14), it is determined whether or not the printer device 6 maintains the online state for a predetermined period (step S13). S15).

In step S15, if the online state is not maintained for a predetermined period, it is determined that the overriding is being executed (S13). Then, the data control unit 2
2 cancels the detection result of "online" (during forced printing) of the printer device during the execution of the override, and does not report this "online" to the S / W (software) such as the application 3. Assuming that the printer override is being executed (S13), the printer apparatus 6 waits until a certain period of time elapses again (S14).
Determines whether to maintain the online state for a predetermined period (S15).

Here, the fixed time in step S14 may be set to, for example, the time required to execute the forced printing of one line, for example, several seconds or more. Step S15
As for the period for determining whether the printer is online, it is possible to determine whether the printer 6 is brought online by setting the new paper after the overriding is completed, for example, if it is about ten seconds. That is, even if the printer 6 is forcibly overridden as "online" in the paper end state at the time of executing the override, the paper end is detected again and becomes "offline" after the completion of printing one line (several seconds after the start of the override). Below about). On the other hand, if the printing paper is replaced with a new one after the overriding, the printing paper will be in the paper end and will be in the online status except for other reasons (for example, paper jam) until it goes offline. For a long enough time. Therefore, step S15
By setting the determination period in 1 above as described above, it can be surely detected that the online state is obtained after the end of the overriding.

In step S15, the printer device 6
Is determined to be online, for example,
The data control unit 22 makes a paper end detection report of the printer device 6 which was detected in step S12 and whose report was suspended, to the application 3 or the application of the host computer 1 (S16). Also,
Then, the printer device 6 reports that new printing paper is set and is in the online state (S17).

In response to the offline report (S16), the application 3 print data for the next page of the page forcibly printed by the override,
For example, in the case of FIG. 7, page recovery is executed for print data D, which is the next page of print data C (S18).

As described above, in the operation 2, the data control unit 22 cancels the information about the "online" state of the printer device at the time of executing the override, and does not execute the report to the upper application. Therefore, it is possible to surely avoid the problem that the printer 6 is reported to be online for the number of times of forced printing and the recovery of the next page is performed for the number of times as in the conventional case.

<Operation 3> Support for Copying Capability of Printer Device A description will be given of a processing method when the printer control system 20 enhances the copying capability of the printer device 6, particularly the impact dot printer device.

When the processing condition setting section 24 of the printer control system 20 is designated to enhance the copying capability of the printer device, the data control section 22 prints the same line on the paper a plurality of times at the same position. Control. A specific processing operation in this case will be described below with reference to FIG.

First, a predetermined command for increasing the copying capability is input to the processing condition setting unit 24 by keyboard input or the like (for example, m times printing command).

When the printing operation is instructed by the application 3 or the like, the data control unit 22 once prints the print data of the nth line (n is a natural number) of the print data sent from the printer driver 4. It is stored in the control system (S21). Also, the print data of the nth row is transmitted to the data buffer of the printer device 6.

Next, the data control section 22 generates a CR (carriage return) code, which is sent to the printer device 6.
(S23). After transmitting the CR code, the data control unit 22 reads the stored print data of the nth row and transmits it again to the data buffer of the printer device 6 (S24). After sending the print data of the nth line, a CR code and an LF (line feed) code which is a paper line feed command in the printer device 6 are generated, and these codes are sequentially transmitted to the printer device 6. (S25).

Depending on the set number of times m, the above S22-
By repeating S24, the data of the same line is printed a plurality of times (m = 2 times in the above example) at the same position on the printing paper. Therefore, even if the maximum pressing force of the print head in the printer device, here the impact dot printer device, is fixed, by repeating the printing a plurality of times as described above, the pressing force of the printer device, that is, the copying ability is improved. It becomes possible.

When an abnormality such as a paper end in the printer device 6 is detected in this operation 3, the same procedure as that of the above operation 1 or operation 2 is adopted so that the page recovery function or the print override function can be performed. Can support. That is, with such a configuration, for example, even if the paper end is detected, the printing process is executed a plurality of times for the end portion of the one-page area and the page recovery is surely performed.

[0077]

As described above, according to the present invention, in a printer system including a serial printer, by providing a printer control system on a personal computer, page recovery function support, printer override function support, or printer copying is supported. The ability can be improved easily.

[Brief description of drawings]

FIG. 1 is a diagram showing a printer system configuration of the present embodiment.

FIG. 2 is a diagram showing an example of a processing flow when a page recovery function is supported by the printer control system of the present embodiment.

FIG. 3 is a diagram showing a state in a data buffer of a printer when a paper end is detected in the present embodiment.

FIG. 4 is a diagram showing an example of a processing flow when a page recovery function is supported by the printer control system of the present embodiment.

FIG. 5 is a diagram showing an example of a processing flow when printing a plurality of times by the printer control system of the present embodiment.

FIG. 6 is a diagram showing a configuration of a conventional printer system.

FIG. 7 is a diagram showing a printing state in a paper end detection state in a conventional printer system.

FIG. 8 is a diagram showing a state in a data buffer of the printer when a paper end is detected in this embodiment.

[Explanation of symbols]

1 host computer, 2 personal computer, 3 terminal emulator application, 4 printer driver, 6
Printer device, 7 sheets, 11 Data buffer of printer device, 12 Remaining part of data C (no page break), 1
3 dummy data, 14 remaining part of data C (with page break), 15 beginning part of data D, 20 printer control system, 12 data control unit, 14 processing condition setting unit.

Claims (9)

[Claims] 1. A printer control system for controlling a serial printer device with a data buffer, wherein print data is provided between a printer driver and the serial printer device and is supplied to the data buffer of the serial printer device. A printer control system having a data control unit for controlling the printer. 2. The printer control system further comprises a processing condition setting unit for setting a processing condition including unique information or print processing information of the serial printer device, wherein the data control unit is based on the processing condition. The printer control system according to claim 1, wherein the print data is controlled. 3. In the printer control system, the data control unit prohibits the print data for the next page following the page feed code from being stored in the data buffer of the printer device. The printer control system according to claim 1 or 2. 4. The data control unit generates dummy data when detecting a page break code from the print data,
According to the data buffer capacity of the printer device, the dummy data is added before the page break code and is output to the data buffer. The print data for the page being printed by the data buffer and the dummy The printer control system according to claim 1, wherein the printer control system is filled with data. 5. The printer control system according to claim 4, wherein the dummy code is a carriage return code. 6. The printer according to claim 4, wherein when an abnormality is detected in the printer, the print data of the page which is being printed when the abnormality is generated is sent to the data buffer of the printer. The printer control system described in 1. 7. The printer control system is used in a printer system having an override function of forcibly printing out the remaining lines of a page that is being printed when the paper end is detected by the printer device. When the paper end is detected, the override function is enabled, and the data control unit cancels the page recovery request signal generated during the forced print processing period of the remaining line by the override function. Claim 1 characterized by
Alternatively, the printer control system according to claim 2. 8. The printer control system according to claim 7, wherein the page recovery request signal is generated when a printer is online during forced printing by the override function. 9. The number of times for printing paper is m (m is a natural number)
When the printing process is requested, the data control unit stores the print data of the nth (n is a natural number) line, and uses the stored print data of the nth line, the A carriage return code for returning the print head of the printer apparatus to the initial position is inserted between the print data of the eyes and sent to the data buffer. After sending the print data of the m number of n lines, the carriage is returned to the carriage. 9. The printer control system according to claim 1, wherein a return code and a line feed code for feeding one line of the printing paper are sent out.