JPH028070A - Control system for both-side printing - Google Patents

Abstract

PURPOSE:To enable the user to be relieved from an operation of forming an overlay sequence and management of the sequence by individually managing overlay data for the face side and that for the back side by a printer, and automatically selecting an overlay for the face side and that for the back side at the time of printing through using a common management name CONSTITUTION:The user preliminarily registers overlay data for the face side and that for the back side into a HOST 20 by using a common management name ID1. Upon receiving the overlay data for the face side and that for the back side from the HOST 20, a controlling means 11 stores the face-side overlay data into a face-side overlay management table 111 and the back-side overlay data into a back-side overlay management table 112, and manages the data. When overlay instructions received successively are ID1, the overlay management table for the side (face or back) opposite to the side (back or face) relevant to the preceiding operation is referenced to select an overlay pattern for the present-time operation, unless a table skip instruction is received. When the face skip instruction is received, a skip to the face side of the next cut paper is performed, and the overlay pattern in the table 111 is made to be an overlay pattern to be printed on the face side.

Description

[Detailed Description of the Invention] [Summary] Regarding the duplex printing control method when printing different overlays on the front and back sides of each cut sheet using a double-sided cut paper printer (PRINTER), the PRINTER side automatically prints overlays for the front and back sides. The purpose is to simplify the management by allowing the user to select the overlay sequence without having to create an overlay sequence on the user's side. This is a duplex printing control method in which overlay data for the front and back sides are sent in an overlay sequence of consecutive IDs along with information for the front and back sides, and the PRINTER manages the overlays for the front and back sides separately, ID, is received, selects the overlay on the opposite side from the previous one, and when a front skip command is received, skips to the front side of the next cut sheet, selects the front overlay, and selects the overlay on the front side. Configure it to print.

[Industrial application field]

The present invention is a double-sided cut paper printer (hereinafter referred to as PRINTER).
This invention relates to a double-sided printing control method when printing different overlays on the front and back sides of each cut sheet.

[Prior Art] When printing overlays and text on the front and back sides of cut sheets that have been cut in advance to a specified size, even if the overlay format is the same, there is a binding margin as shown in Figure 4. In some cases, it may be necessary to separate the front side and the back side.

FIG. 5 shows a double-sided printing control system when overlays for the front side and the back side are used when double-sided printing is performed on one cut sheet in this manner. The double-sided printing control method shown in FIG. 5 will be described below in accordance with its processing order.

■ Host computer (hereinafter referred to as HO5T) 40
The overlay data for the front side and the back side registered in advance by the user is transferred to the PRINTER3 under control.
Issued on 0.

(a1) in Figure 5 shows the frame format of the overlay data for the front side.Following the management name ID that specifies the front side, the overlay pattern data created for the front side is set. Ru. (a2) is the format of overlay data for the back side, in which data of an overlay pattern created for the back side is set following the management name ID2 indicating the back side.

■ PRINTER30 host ink face section (
The HIF section) 31 receives and decodes commands from the HO3T40, and sends overlay data for the front side and back side inputted from the HO3T40 to the printer control section 32. The printer control unit 32, which includes a processor (not shown) and controls the overall printer operation, stores each input overlay data in an overlay management table 33, and manages the data using its management name TD and ID2.

■ The user decides the printing method for each cut sheet and sets the overlay sequence in advance on HO3T.
Register at 40. Now, as shown in ■ in the figure, print the data of the first page (hereinafter, the For the eyes, print the data of P and 3 on the front side and leave the back side blank, 3
The data of P, 4 is printed on the front side of the sheet, and the data of P, 5 is printed on the back side. In this case, the user selects an overlay sequence (ID.

= I D z −I D + −I D + −I
D z ) and register it in HO3T40.

According to this overlay sequence, HO3T40 sets the first overlay command ID to PRINTER3.
Issued on 0.

(2) The HIF section 31 of the PRINTER 30 receives and decodes the input command, and stores the sequence.

Using this management name ID, the printer control unit 32 refers to the overlay management table 33, extracts the overlay data with the management name ID, that is, the overlay pattern data for the front side, and outputs it to the overlay development processing unit (hereinafter referred to as OVC).
After developing the overlay pattern to be printed using 321 (indicated by BM
34 (indicated by M).

■ When the development process of this surface overlay pattern is completed, the printer control section 32 sends the HO via the HIF section 31.
Requests 3T40 to send the next command.

When the HO3T 40 receives this transmission request, it first issues a page break command before the print text data of P, 1 in accordance with the print data command shown by ◎ in the figure.

■ The HIF section 31 receives and decodes the input command, and sends the detected page break command to the printer control section 3.
Send to 2. When the printer control unit 32 receives the first page break command, the printer mechanism control unit (hereinafter referred to as PRC) 323 causes the printer mechanism 35 to feed the first cut sheet, and the front side of the sheet is printed. to make cents.

When this process is finished, the printer control unit 32
Request T40 to send the next command.

■ The HIF section 31 then sends the print text data (one page) of P and 1 input from the HO3T40 to the printer control section 3.
Send to 2.

The printer control unit 32 uses the initial character data of P and 1 and develops each character pattern to be printed using a character development processing unit (hereinafter referred to as CGC) 322, and develops the data at the same (predetermined position on the 8MM 34).

■ When the printer control unit 32 finishes developing each character pattern of the overlay and print text of P and 1 on the 8MM 34,
Instruct PRC323 to send 8MM3 to printer mechanism 35.
Print the contents of P, 1 developed on 4 on the front side of the first cut paper.

0 When the printer control unit 32 instructs the PRC 323 to print the contents of P, 1, the printer control unit 32 sends HO3T via the HIF unit 31.
40 to send the next command.

When the HO3T40 receives the next command transmission request from the PRINTER30, it prints the management base ID2 of the back overlay according to the overlay sequence shown in ■ in the figure.
Send to RINTER30.

@ The HIF unit 31 and print link control unit 32 of the PRINTER 30 perform the same processing as in the case of the ID described above, and this time they obtain the management base ID from the overlay management table 33.
2 overlay data, that is, the overlay data for the back side.
The pattern data is taken out and developed at a predetermined position on the 8MM34.

@ When the processing for developing the overlay pattern for the back side is completed, the printer control unit 32 requests the HO5T 40 to send the next command.

HO3T40 issues a page break command before P and 2 in accordance with the print text data command indicated by ◎ in the figure.

0 When the printer control unit 32 receives a page break command from the HIF unit 31, the printer control unit 32 controls the printer mechanism 35 using the PRC 323, reverses the first cut sheet, and sets the back side of the sheet to be printed.

■ When this page break process is completed, the printer control unit 3
2 requests the HOST 40 to send the next command.

When the HO3T 40 transmits the next P, 2 print text data (for one page), the HIF section 31 receives it and sends it to the printer control section 32.

■ The printer control unit 32 prints each character pattern of the print text of P, 2 as in the previous case of the print text data of P, 1.
Deploy it at a predetermined position on the same <8MM34.

[Phase] When the printer control unit 32 finishes developing the overlay of P and 2 and the pattern of each character on the 8MM 34, the printer control unit 32 prints the P.
The printer mechanism 35 is controlled by RC323, and 8MM
The contents of P, 2 developed on 34 are printed on the back side of the first cut sheet.

In the above manner, P and 1 are placed on the front side of the first cut paper.
is printed, P and 2 are printed on the back side, and the double-sided printing process for the first cut sheet is completed. Thereafter, double-sided printing is performed on each of the second and subsequent cut sheets in the same manner. In the following description, regarding operations common to those in the first image, only the results will be described and the details will be omitted.

O In the same way as in the case of the first cut sheet, the management name I is sent from HO3T40 according to the overlay sequence shown in ■ in the figure.
When the overlay command of D is sent, 8MM34
An overlay pattern is ostensibly developed thereon. Next, when the print text data of P, 3 is sent from HO3T40, each character pattern of the print text of P, 3 is the same <8MM3
Expanded on 4. The surface overlay developed on this 8MM34 and each character pattern of the printed text of P and 3 are as follows:
In the same manner as the first sheet, printing is performed on the front side of the second sheet of cut paper.

@When the contents of P and 3 are printed on the front side of the 12th sheet of cut paper, the same overlay command (IDI) for the front side as before is sent from the HO3T40 (see ■ in the figure), and the overlay command for the front side is printed. - The pattern is developed at a predetermined position on the 8MM34.

[Phase] Next, when a table skip command is sent from the HO3T40 (see ■ in the diagram), the printer control unit 32
The printer mechanism 35 is controlled by the PRC323 to eject the second cut sheet at the timing when the back side is turned, and the next three sheets are ejected.
Feed the first sheet of cut paper and set it to print on the front side.

When the table skip processing is completed, the printer control unit 32
Requests HO3T40 to send the next command.

[Phase] For HO3T40, follow the command marked ◎ in the figure.
, 4 is sent to the PRINTER 30. The printer control unit 32 converts each character pattern of the print text P, 4 into a pattern in which the overlay pattern for the front surface has already been developed.
Deploy it on 8MM34.

When the overlay pattern for the front side and the pattern of each character of the print text P and 4 are developed, the printer control unit 32 controls the printer mechanism 35 using the PRC 323 to print the front side of the third cut sheet. The contents of P, 4 expanded on 8MM34 are printed.

■ After printing the contents of P and 4 on the front side of the third cut paper, print P and 2 on the back side of the first cut paper.
In the same way as when printing the contents of P and 5 on the back side of the third cut sheet (the overlay identification code is ID
2) is printed.

As described above, as shown in the figure, 1°2 and 3
On the front side of each cut sheet, there is an overlay for the front side.
(Identification code ID1) contains P, 1゜P, 3 and P,
4 print sentences are printed. Also, on the back side of each of the first and third cut sheets, P is written in the overlay for the back side (identification code ID2).

2, P, and 5 are printed, and the second cut sheet is left blank without being printed.

[Problem to be solved by the invention]

The print control method for conventional double-sided cut paper printers is
As mentioned above, one management name (ID and IDz) was assigned to each of the front and back sides for management.

Therefore, when printing on both sides of cut paper, the user calculates whether the printing side of the print data will be on the front side or the back side, taking into account the presence or absence of skipping, and then prints the print data on the front side and the back side accordingly. Since overlay sequences must be created and managed, there is a problem in that the amount of work on the user side increases and the management becomes complicated.

The present invention provides an improved double-sided printing control method that automatically selects overlays for the front and back sides on the PRINTER side, eliminates the need for overlay sequence creation work on the user side, and simplifies its management. With the goal.

[Means to solve the problem]

The means adopted by the present invention to solve the above-mentioned problems are as follows:
The explanation will be given with reference to the principle diagram of the present invention shown in FIG. 1 and FIG. 2.

In Figure 1, 10 is a double-sided cut paper printer (PRI).
NTER) includes a printer control means 11 and a printer mechanism 12, and the printer control means 11 controls the printer mechanism 12 to perform double-sided printing on cut sheets of various sizes.

20 is a host computer (denoted as HO3T), P
Send various commands and printing character data shown in (1) to (O) to RINTERIO to perform double-sided printing on cut paper.

Figure 2 shows the contents of each command ■ to ■.
shows an example of the frame format of the overlay data used in the present invention, (al) shows the frame format of the overlay data for the front side, and (a2) shows the frame format of the overlay data for the back side. Indicates frame format. A common administrator ID+ (1 byte) indicating overlay data is set in the first ID area of both frame formats. In the next printing surface area, the front side instruction code is set for the front side format 1-(a1), and the back side format (a
In 2), back side designation information is set. In the data area, there is an overlay for the front
The pattern data is sent and formatted for the back side (
In a2), the data of the overlay pattern for the back side is set.

3 shows the overlay sequence used in the present invention, which is commonly set to [ID and J consecutively] for both front and back printing.

3 indicates a command for print text data, the contents of which are the same as those of C in FIG. In other words, the first sheet of cut paper has data 2.1 printed on the front side, data P and 2 on the back side, and the second sheet has P printed on the front side.

This command is for printing the data of 3 and leaving the front side blank, and printing the data of P and 4 on the front side of the third sheet, and the data of P and 5 on the back side. "Page break" indicates a page break command, P, 1 to P, 5 indicate character data for printing on each corresponding page, and "Skip front" indicates the front side of the next cut sheet without printing the back side. This is a command to skip to the side.

In the printer control means 11 of the PRI NTER 10, 111 is a front overlay management table, which is
D+ and surface overlay data are stored. 11
Reference numeral 2 denotes an overlay management table for the back side, in which an administrator ID and overlay information for the front side are stored.

The print control method of the present invention is based on each command and print data issued by the HO3T20 described above, and the PRINTERI.
It is implemented using O, and is configured as follows.

In other words, a common administrator (IDl) that specifies overlay data from HO3T20, print side instruction information that specifies whether the overlay data is for the front side or the back side, and the corresponding overlay data for the front side or the back side. Overlay data containing pattern data is published,
said Administrator II consecutively as an overlay sequence.
)+ is registered, followed by print text data commands for double-sided printing, and PRIN according to these commands.
A double-sided printing control method when TERIO performs double-sided printing on each cut sheet, (8) Overlay data for the front side and overlay data for the back side.
(B) The overlay commands are continuously managed by the administrator ID.
If it is +, unless a front skip command is received, the overlay management table on the opposite side of the front and back is referred to and that overlay pattern is selected as the current overlay pattern, and (C) the front skip command is When received, it is configured to skip to the front side of the next cut sheet and select the overlay pattern in the front side overlay management table 111 as the overlay pattern to be printed on the front side.

[For production]

The user saves the overlay data for the front and back sides to HO3T20 using a common administrator named "ID1".
Register in . In addition, the order in which overlays are printed, that is, the overlay sequence, is [Continuously set ID, J, and print data. Now, print text data is sent to PRINTER according to the command shown in Figure 1.
10 shall be sent.

The printer control means 11 of the PRI NTER 10 is
When overlay data for the front side and the back side is received from the 3T20, the former is stored in the overlay management table 11 for the back side.
1, the latter is stored and managed in the back side overlay management table 112. Whether the received data is overlay data and whether it is for the front side or the back side is detected by decoding the management base ID and print side instruction information.

The printer control means 11 receives overlay commands from the HO3T 20 in succession.

In this case, unless a front skip command is received, the overlay management table on the opposite side to the previous one is referred to and that overlay pattern is selected as the current overlay pattern. Subsequently, the print text data received from the HO3T 20 is sent to the printer mechanism 12 together with the overlay pattern to be printed.

As a result, unless a skip command is issued from the HO3T20, overlay patterns and print data for the front and back sides are alternately printed on the front and back sides of each cut sheet.

When a table skip command is received from HO3T20 (in O in Figure 1, next to the print text data of P, 3),
PRINTERl 0 is an overlay pattern to skip to the front side of the next cut sheet and print the overlay pattern in the front side overlay management table 111 on the front side.
Make it a pattern. Subsequently, the print data received from the HO3T 20 is sent to the printer mechanism 12 together with the front side overlay pattern to be printed on the front side of the cut sheet.

As a result, when a table skip command is issued, the front side overlay pattern is selected and printed on the front side of the cut sheet along with the print text data.

Thereafter, as described above, unless a front skip command is received, the overlay pattern of the overlay management table on the opposite side from the previous one is extracted and printed together with the print text data.

As a result, as shown at @ in FIG. 2, on the front side of each of the first, second and third cut sheets, P, 1. The print sentences P, 3 and P, 4 are printed.

Also, on the back side of each of the first and third cut sheets, there is a P in the overlay for the back side.

2, P, and 5 are printed, and the back side of the second cut sheet is left blank without being printed.

As described above, each overlay information for the front side and the back side is managed separately on the PRINTER side, so
A common management base can be used to automatically select front and back overlays during printing. This frees the user from the task of creating and managing overlay sequences. Additionally, users can print tables and
Overlays can be handled in the same way as single-sided printing without having to be aware of the back side, and double-sided printing can be performed using the same print data commands as for conventional double-sided printing, which, in combination with the above, reduces the amount of work on the user's side. can be reduced and management simplified.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS. 2 and 3. FIG. 3 is an explanatory diagram of the configuration of an implementation system of an embodiment of the present invention. FIG. 2 shows various data and commands used in the embodiment, as well as an example of double-sided printing, the contents of which are as already described.

(A) Configuration of implementation system In Figure 3, a double-sided cut paper printer (PRINTE)
R) 10; Overlay management table 111 for the surface of the printer control means 111. Overlay management table 1 for back side
12. Printer mechanism 12. host computer (HO
5T) 20 is as explained in FIG.

In the printer control means 11, a host interface 113 (indicated by HIF) receives and decodes commands issued by the HO3T20. Reference numeral 114 denotes a bitmap memory (denoted by BMM) in which overlay patterns and character patterns of each print text developed by a printer control unit 115, which will be described next, are developed.

The printer control unit 115 includes an overlay development processing unit (indicated by OV C) 116. Character expansion processing unit (indicated by CGC) 117. Printer mechanism control unit (indicated by PRC) 1
18. The printer controller 115 includes a processor (indicated by MPU) 119 that controls the overall operation and processing of the printer control unit 115, and performs the following processing.

The overlay data for the front and back sides inputted from the falHIF unit 113 are stored in the overlay management tables 111 and 112 for the front and back sides, respectively.

2) Determine whether the overlay to be printed this time is the front or back side, extract the predetermined overlay pattern data from the overlay management table for the front or back side (111 or 112), and develop it into the overlay pattern to be displayed using 0VC116. , 8MM114 at a predetermined position.

(C) The print text data input from the HIF unit 113, that is, each character pattern data for one page, is transferred to the CGC 117.
Convert each character pattern to be displayed by 8MM11
Each character pattern for one page is developed at a predetermined position on 4.

(d) Instruct PRC118 to print printer mechanism 1.
2, the overlay for the front or back side developed on the 8MM 114 and each character pattern of the print text are printed on the front or back side of the cut paper.

Note that the printer control unit 0 and the printer control unit 115 are equipped with various configurations necessary for printer processing in addition to the above-mentioned configurations, but these are not directly related to the operation of the embodiment of the present invention. Therefore, illustration and explanation thereof will be omitted.

(B) Operation of the Embodiment The operation of the embodiment is explained by using the overlay data, overlay sequence, and print data commands shown in ■ to ■ in Figure 2 to perform double-sided printing as shown in ■ in the same figure. This will be explained in the order of processing.

■ HO3T20 prints the overlay data for the front and back sides registered in advance by the user in the frame format shown in ■ in Figure 2.
Send to O.

■ The HIF section 113 of PRINTERIO is HO3T
HO5 receives and decodes commands from HO5.
The overlay data for the front and back sides sent from T20 is sent to the printer control unit 115. Printer control unit 11
The MPU 119 of No. 5 discriminates each input overlay data for the front side and the back side based on the administrator ID and printing side instruction information, and the former is determined from the overlay management table 1 for the front side.
11, and the latter is stored and managed in the back side management table 112.

■ The HO3T20 issues the overlay command of the administrator ID according to the overlay sequence ``Continuously ID+J'' registered in advance by the user.

■ The HIF unit 113 of PRINTERIO receives and decodes the input command, and outputs the input overlay and
When the administrator ID of the command is detected, this administrator ID
, is sent to the printer control unit 115.

When the MPUI 19 of the printer control unit 115 receives this first management ID and overlay command, it outputs 0VC.
116 to develop the front side overlay data in the front side management table 111.

- Upon receiving this development instruction, the 0VC 116 extracts the front overlay pattern data of the administrator ID from the front management table 111, develops it into the front overlay pattern to be displayed, and then further loads it at a predetermined position on the 8MM 114. Expand to.

■ When the development processing of this surface overlay pattern is completed, the MPUI 19 sends the HO3 via the HIF section 113.
Request T20 to send the next command.

When the HO3T 20 receives this transmission request, it issues a page break command before the first, P, and 1 print text data in accordance with the print data command shown by ◎ in FIG.

(2) The HIF section 113 receives and decodes the input command, and sends the detected page break command to the printer control section 115. MPUI 1 of printer control unit 115
9 receives the first page break command, PRCll
The operator instructs the printer mechanism 12 to feed the first cut sheet and set it so that the front side thereof will be printed.

■ When page break processing is completed, MPUI 19 displays HO3
Request T20 to send the next command.

HO3T20 prints the print text data (1 page) of P, 1 according to the print text data command marked ■ shown in Figure 2.
Send to I NTERl 0.

(2) The HIF section 113 sends the received print text data of P, 1 to the printer control section 115. Printer control unit 11
MPUI 19 of 5 converts this print text data of P, 1 to C
It is sent to the GC 117 and instructs it to be developed into each character pattern to be printed.

[Phase] Upon receiving this development instruction, the CGC 117 develops each character data of the input print text data of P and 1 into each character pattern to be printed, and also develops it at a predetermined position on the 8MM 114.

■ When the MPU 119 completes the process of developing each character pattern of the overlay and print text of P, 1 on the 8MM 114, it instructs the PRCllB to cause the printer mechanism 12 to convert the contents of P, 1 developed on the 8MM 114 into 1. Print on the front side of the first cut paper.

@ When the MPU 119 instructs PRCllB to print the contents of P, 1, the MPU 119 prints HO3T via the HrF unit 113.
20 to send the next command.

When the HO3T20 receives a request to send the next command from PRINTERIO, it issues an overlay command with the same management group ID in accordance with the overlay sequence shown in ■ in FIG.

e The HIF section 113 sends the received overlay command (ID1) to the printer control section 115.

When the overlay commands are ID consecutively, the MPU of the printer control unit 115 selects the overlay management table on the opposite side from the previous one and instructs the 0VC 116 to develop it, unless a front skip command is received.

Therefore, the 0VC 116 is now instructed to develop the back side overlay data in the back side management table 112.

- Upon receiving this development instruction, the 0VC 116 extracts the back side overlay pattern data with the management base ID from the back side management table 112, develops it into the back side overlay pattern to be displayed, and then further loads it at a predetermined position on the 8MM 114. Expand to.

■ When the development process for this back side overlay is completed, M
The PU119 requests the HO3T20 to send the next command.

The HOST 20 inserts a page break/page break before the print text data of P, 2 according to the command of the print text data shown in ■ in Figure 2.
Issue a command.

e HIF section 113! Then, the received page break command is sent to the printer control unit 115. Printer control unit 1
When MPUI 19 of 15 receives this page break command, it instructs PRCllB to send 1 to printer mechanism 12.
Flip the first sheet of cut paper and set it so that the back side will be printed.

■ When this page break process is completed, MPUll9
Requests HO3T20 to send the next command.

When the HO3T 20 transmits the next P, 2 print text data (for one page), the HIF section 113 receives it and sends it to the printer control section 115.

[Phase] MPU 119 and CG of printer control unit 115
C117 changes each character pattern of the print text of P, 2 to the same <8MM1 as in the case of the previous print text data of P, 1.
14 at a predetermined position.

@ When the MPU 119 completes the process of developing each character pattern of the overlay and print text of P and 2 on the 8MM 114, it instructs the PRCllB to
The contents of P, 2 developed on the 8MM 114 are printed on the back side of the first cut sheet.

In the above manner, P and 1 are placed on the front side of the first cut paper.
is printed, P and 2 are printed on the back side, and the double-sided printing process for the first cut sheet is completed. Thereafter, double-sided printing is performed on the second and subsequent cut sheets in the same manner. In the following description, regarding operations common to the double-sided printing operation for the first sheet, only the results will be described and the details thereof will be omitted.

When the printing of P and 2 on the back side of the 01st sheet of cut paper is completed, the front side overlay management table 111 opposite to the previous one is selected by the next consecutive overlay command ID issued by the HO3T20, and the front side overlay management table 111 is selected, and A side overlay pattern is deployed in place on the 8MM 114.

Next, when the page break command before P and 3 is sent from the HO3T20 according to the print text data command marked ◎ in Figure 2, the second cut sheet is fed and its front side is printed. is set to the state. Next, when the print text data of P, 3 is sent from HO3T20, P,
Each character pattern of the print sentence No. 3 is developed at a predetermined position on the same <8MM 114.

Surface overlay developed on 8MM114 and P,
Each character pattern of the printed sentence No. 3 is printed on the front side of the second cut sheet in the same manner as the first sheet.

- When the contents of P and 3 are printed on the front side of the second cut sheet, an overlay command (ID1) is continuously sent from the HO3T20. As a result, an overlay pattern for the back side opposite to the previous one is developed on the 8MM 114.

0 Next, when a table skip command is sent from HO3T20 (see O in Figure 2), MPU119 sends PR
The printer mechanism 12 is controlled by the CI 18 to eject the second cut sheet at the timing to turn the back side, feed the next third cut sheet, and set the front side of the sheet to be printed. . At the same time, MPU119
116 to create an 8MM surface overlay pattern.
114.

8M of table skip processing and surface overlay pattern
When the expansion process onto the M114 is completed, the MPU 119 requests the HO5T20 to send the next command.

@HO3T20 sends the print text data of P and 4 to PRINTERIO in accordance with the command (■) in FIG. The MPU 119 of the printer control unit 115 instructs the CGC 117 to convert each character pattern of the print text P and 4 into 8MM in which the front overlay pattern has already been developed.
114.

When the development processing of the overlay pattern for the front side and each character pattern of the print text of P and 4 is completed, the MPU 119
The printer mechanism 12 is controlled by the PRCI 18, and 3
The contents of P, 4 developed on 8MM114 are printed on the front side of the th sheet of cut paper.

Once the contents of P and 4 have been printed on the front side of the cut paper in the O3 sheet slot, print the contents of P and 2 on the back side of the first cut paper, and then print the contents of P and 2 on the back side of the first cut paper. The contents of P and 5 are printed on the back side.

As described above, as shown in (■) in FIG. 2, on the front side of each of the 1.2 and 3rd cut sheets, P, 1. The print sentences P, 3 and P, 4 are printed. Also, on the back side of each of the first and third cut sheets, the letters P, 2 and P, 5 are printed in the overlay for the back side, and on the back side of the second cut sheet, , is left blank instead of printing.

〔Effect of the invention〕

As explained above, according to the present invention, the following effects can be obtained.

Since each overlay information for the front side and the back side is managed separately on the C1J PRINTER side, it is possible to automatically select the overlay for the front side and the back side at the time of printing using a common management name.

(2) The user can be relieved from the task of creating and managing overlay sequences.

(3) Users can handle overlays in the same way as single-sided printing without having to be aware of front and back printing, and can perform double-sided printing using the same print data commands as for conventional double-sided printing. In combination with (2), the amount of work on the user side can be reduced and management can be simplified.

[Brief explanation of the drawing]

Fig. 1 is a diagram of the principle of the present invention; Fig. 2 is an explanatory diagram of various data and commands used in the present invention and embodiments, as well as an example of double-sided printing; Fig. 3 is an implementation system of an embodiment of the present invention. FIG. 4 is an explanatory diagram of the overlay for front and back sides, and FIG. 5 is an explanatory diagram of the conventional double-sided printing control system. In Figures 1 and 2, 10...Double-sided cut printer (PRINTER);
DESCRIPTION OF SYMBOLS 11... Printer control means, 111... Overlay management table for front side, 112... Overlay management table for back side, 113... Host interface section (
HIF section), 114...Bitmap memory (B
MM), 115...Printer control unit, 116...Overlay development processing unit (OVC), 117...Character development processing unit (CGC), 118...Printer mechanism control unit (PRC), 119...・Processor (MPU),
12... Printer mechanism, 20... Host computer (HOST).

Claims (1)

[Claims] 1. A common management name (ID_1) that indicates overlay data from the host computer (20), and printing surface instruction information that indicates whether the overlay data is for the front or back surface. , overlay data including data of the corresponding front side or back side overlay pattern is issued, the management name (ID_1) is registered continuously as an overlay sequence, and then print text data for double-sided printing is issued. This is a duplex printing control method when commands are issued and a duplex cut paper printer (10) performs duplex printing on each cut paper according to these commands, in which: (A) overlay data for the front side and overlay data for the back side;
The data is stored in separate front side overlay management table (111) and back side overlay management table (112).
), and (B) overlay commands are continuously managed by the management name (I).
D_1), unless a front skip command is received, refer to the overlay management table on the opposite side from the previous one and select that overlay pattern as the current overlay pattern; (C) Front skip command is received, skips to the front side of the next cut sheet and selects an overlay pattern in the front side overlay management table (111) as the overlay pattern to be printed on the front side. Double-sided printing control method.