JPS5995176A - Line-shifting method in printing by printer - Google Patents

Abstract

PURPOSE:To obviate the problem that characters are printed astride two adjacent pages, by a method wherein a line shift length is sequentially subtracted from a preset page length each time of line shifting, and when the remainder becomes smaller than the line shift length, the remainder is added to the next line shift length, and the line is shifted. CONSTITUTION:An RAM2 is provided with a PAGEL memory 21 for presetting the length l1 of one page of a paper 6 sectioned into pages at fold lines (a), a PAGER memory 22 for storing the length l2 from the current printing line to the next page, a VAI memory 23 for storing the length l3 required for shifting a line, an LFCNT memory 24 for storing the line shift length at the time of a line-shifting operation, an FLAG memory 25 for storing a flag for discriminating between a text mode and a graphic mode, and the like. An ROM3 stores various program data such as a mode-discriminating program 31 and a text line-shifting program 33. Accordingly, a residual length of the next page is properly set.

Description

[Detailed description of the invention] [Technical field of invention] The present invention relates to a line feed method in printer printing.

[Technical background of the invention and its problems]

In conventional printers, when printing continuously on sheets of paper separated by perforations or other folds, the characters on the last line are printed at preset line feed lengths. However, if the length of the line feed was changed midway through printing, the characters on the last line would be printed on the next page.

[Purpose of the invention]

The present invention was conceived to solve such problems, and an object of the present invention is to provide a line feed method in printer printing that does not cause the inconvenience of characters being printed on the next page.

A further object of the present invention is to provide a line feed method for printer printing that allows graphics to be printed over the next page and maintains the continuity of the graphics.

[Summary of the invention]

This invention sequentially subtracts the length of the line feed from the preset page length each time a line feed is printed, and when the subtraction n (rM becomes shorter than the length of the next line feed, the length of the next line feed is immediately subtracted. The purpose is to change the length to the added length and start a new line.

In addition, this invention is capable of subtracting (even if the line becomes shorter than the length of the next line break, the length of the next page is calculated from the preset length of the next page by subtracting it when the print is a graphic other than text characters. The purpose is to change the length by subtracting the length of the line break from the length of the line feed.

[Embodiments of the invention]

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

Figure 1 is a block diagram of the main parts, 1 is a microprocessor,
2 is RAM (Random Access Memory), 3 is R
OM (read-only memory). The microprocessor J (!: RAM 2.

It is electrically connected to the ROM 3 via address and data bus lines 4 and control path lines 5. The microprocessor 1 includes a control block 11 that controls internal and external components, an arithmetic block 12 that controls calculations, and a
Register 13, B register 14, C register 15, RO
a ROM instruction execution block 16 that executes the instruction M3;
There is a determination block 17 and the like that determines flags and the like as a result of calculations. As shown in FIG. 2, the RAM 2 includes a PAGEL memory 21 in which the length tl of one page of paper 6 divided by fold lines A is preset, and the length from the current print line to the next page. PAGER memory 22 for storing the line feed length t2, VAI memory 23 for storing the line feed length t3 for one line, LFCNTI memory 24 for storing the line feed length at the time of line feed operation, and a flag for determining whether it is text mode or graphic mode. A FLAG memory 25 and the like for storing the information are provided.

The ■ζOM 3 includes a mode determination program 31 for determining whether the mode is text mode or graphic mode, a graph ink line feed program 32 for performing line feed processing in graphic mode, and a graph ink line feed program 32 for performing line feed processing in text mode. Various program data such as a text line feed program 33 for performing line feed processing in the program are stored.

FIG. 3 is a flowchart showing the line feed processing by the microprocessor 1, where the microprocessor 1 is the antibacterial block 1]
ROM 3 using control path line 5
is selected, and the mode determination program in ROM 3 is transferred to the RO using the address and data bus line 4.
It is determined whether the mode is text mode or graphic mode by sequentially reading M instruction execution blocks. This judgment is made by selecting RAM 2 according to control block 1, and
This is done by reading the contents of the FLAG memory 25 of No. 2 into the judgment block 17. If the judgment result is text mode, select ROM 3 using control block 11, and
The text line feed program 33 of the OM 3 is sequentially read out to the ROM instruction execution block 16 to perform line feed for the text mode. This line break is sent to control block 11 by fi RA
M2 is selected, and the contents of the PAGER memory 22 are read into the A register 13, and the contents of the VAI memory 23 are read into the B register 14. Next, in calculation block 12, A
The register minus the B register is executed, and the result is stored in the A register 13 and judged in the judgment block 17. and B register>A register, i.e. VAI
) If it is PAGER, it is determined that the remaining page length is less than the length of one line feed, and VAI + PAGERL TeLFC is executed.
NT mailer stores 24K.

The contents of PAGEL memory 2 are still stored in PAGER memory 22. This is controlled by control block 11.
The contents of the memory 22 are read into the QA register 13, and the contents of the PAGEL memory 2 are read into the C register.
The calculation block 12 performs a Δ register glass C register, stores the result in the LFCNT memory 24, and stores the contents of the C register 15 in the PAGER memory 22. Also, B reno star ≦ A register, that is, VAI ≦ PAGE
If it is R, it is determined that the remaining page length is one line feed length or more, and the contents of the vAI memory 23 are stored in the LFCNT mailbox.
24, PAGER minus VAI is performed, and the result is stored in PAGER memory 22. This is because VIA is stored in the B register 14, so it is stored in the sterilization block 11! 1llB register 14 contents to L
Stored in the FCNT memory 24 and also stored in the A register 13.
Since the result of AGFJR minus VIA is stored, the contents of pA renostar 13 are PAGed by control block 1.
It is stored in the ER memory 22.

If the determination result is the graphic mode, the control block 11 selects the p ROM 3, and sequentially reads out the graphic line feed program 32 in the ROM 3 to the ROM instruction execution block 16 to perform line feed for the graphic mode. This line break is due to tUlj To block 1 no.
Select RAM 2 and write the contents of PAGER memory 22 to A.
At the same time, the contents of the VAI memory 23 are read into the B register 14. Next, calculation block 12
Perform A register minus B register, and save the result as A
It is stored in the register and judged in the judgment block 17. And A register>B register, that is PAGE
R) If VAI, the VAI memory 23 is used as in the case of PAGER≧VAI in the text mode described above.
The content of is stored in the LFCNT memory 24, and the PAGE
Perform R minus VAI and save the result to PAGER memory 22
Store in. Also, B register>A register, that is, V
If AI>PAGEIN, the control block 11 selects the PAGEL memory 21, vAI memory 23, and PAGEL memory 21, vAI memory 23,
The contents of the memory 24 are stored in the A register 13, B register 14, and C register 15, respectively, and the contents are stored in the B register 1.
The VAI of 4 is stored in the LFCNT memory 24. Next, the arithmetic block 12 performs B register minus C register, and stores the result in BI/register 14. Next, perform A register minus B register, and the result is P
AGEL - (VAI - PAGER) in A register 1
3, and then PAGE the contents of A Renometa No. 3.
The data is stored in the memory 22. Furthermore, A register 2 B register, that is, if PAGFR = VAI, exactly 1 line feed can be performed, so VAI of B register is set for block 1.
is stored in the LFCNT memory 24, the contents of the PAGEL memory 2 are read into the A register 13, and the contents of the A register 13 are stored in the PAGER memory 22.

In such a configuration, in text mode, if the remaining page length υ is longer than the line feed length, PAGER≧VAI
Therefore, at this time, the contents of the VAI memory 23 are LF.
The LFCNT memory 24 is stored in the CNT memory 24 and the LFCNT memory 24
The next line break is performed based on the contents of . and P.A.G.
The remaining line length after subtracting the next line feed length is stored in the lliER memory 22. Therefore, when a line break is performed at a preset length without changing the line break length midway, the line break of the last line will be exactly at the end of the page, so in this case, as shown in Figure 4 (a). The next line will be printed at the beginning of the next page without overlapping the fold. If the remaining length of the page is still shorter than the line break length, use PAGER(VA
I, so at this time the contents of the VAI memory 23 and P
The result obtained by adding the contents of the AGER memory 22 is stored in the LFCNT memory 24 as the next line feed length. Therefore, when the line break length is changed midway and the remaining length of the page no longer satisfies the next line feed length, the next line feed length spans the next page as shown in Figure 4 (b). Since a line feed is performed at the length of VAI on the page, the characters printed on the next line will not overlap the fold. On the other hand, in the conventional method, the length of VAI is used as the length of the next line feed, which has the disadvantage that printed characters overlap the fold as shown in FIG. 4(c).

Also, in graphic mode, the remaining p length of the page is V
Always VAI regardless of whether it is long or short relative to the length of AI
The next line break is performed depending on the contents of memory 23, so the fifth
As shown in the figure, printing is performed overlapping the fold of the next page, thereby maintaining the continuity of the graphics. And if the next line break is 1 on the fold, the remaining length of the next page is 1
It will not match the length of the page, but regarding this, PAG
The line break length (VAI) of the data stored in the ER memory 22
PAGE the result of subtracting the remaining amount (PAGER) from
Since it is determined by subtracting from the contents of L memory 2, the remaining length of the next page will be set correctly.

〔Effect of the invention〕

As detailed above, according to the present invention, even if the line break length tends to change midway and the remaining amount of a page becomes less than one line feed length, the inconvenience that characters are printed on the fold across the next page can be avoided. It is possible to provide a method for line breaks in printer printing that does not cause line breaks to occur.

In addition, according to the present invention, when printing graphics such as figures, even if the remaining page length is less than one line feed length, the line feed method in printer printing can be continued to the next page and the continuity of the graphic can be maintained. This is something that can be provided.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, and FIG. 1 is a block diagram of the main part, FIG. 2 is a diagram showing each length of paper, FIG. 3 is a flow chart showing line feed processing by a microprocessor, and FIG. (a) shows the printing status in text mode.
(b) is a diagram showing the printing state when the line feed length is not changed.
(C
) is a diagram showing the printing state when the line feed length is changed in the conventional method, and FIG. 5 is a diagram showing the printing state in the graphic mode. 1...Microprocessor, 2...RAM (Random Access Memory), 3...ROM (Read Only Memory). Applicant's agent Patent attorney Takehiko Suzue Figure 4 (a) (b) Figure 5 (c)

Claims (2)

[Claims] (1) When each person prints on paper divided by folds using a 7'lJ printer, the page length is reset, and each time a line feed is printed, the line feed length is sequentially subtracted from the page length. However, if the subtracted value becomes shorter than the length of the next line feed, the length of the next line feed is changed to the length obtained by adding the subtracted value. (2) When each member prints on paper divided by folds with a 7° link, the page length is preset, and each time a line feed is printed, the length of the line feed is sequentially subtracted from the page length, If the printed text is a text character, if the subtracted value is shorter than the length of the next line feed, the next line feed length is changed to the length of the subtracted value, and if the printed text is a graphic other than text characters, it is subtracted. If the value becomes shorter than the length of the next line feed, the length of the next line feed will remain as 1 and the length of the next page will be the difference between the length of the next line feed and the subtracted value from the preset page length. A line feed method in printer printing characterized by changing the length to a length obtained by subtracting .