JPH0630923B2 - Printer - Google Patents

Description

The present invention relates to a printing apparatus for printing data output from an electronic computer or text information created by a word processor.

<Prior Art> Conventionally, when printing one page of data on each of the left and right of one sheet and printing two pages of data on one sheet, one page and two pages, three pages and four pages 5,
Pages and 6 pages are printed on one sheet as a set of two pages in order from the first page.

<Problems to be Solved by the Invention> However, in the method of printing two pages in order from the first page described above, printing is performed on both sides of the paper, and a plurality of papers are printed as shown in FIG. When trying to bind the books together, the number of pages becomes different, and thus it is impossible to perform such binding.

The present invention has been made in view of such problems as described above.
An object of the present invention is to provide a printing apparatus that prints by changing the order of pages so that the pages are arranged in order when bound as shown in the figure.

<Means for Solving Problems> The printing device of the present invention is a printing device that divides a printing area of a sheet into left and right and prints two pages of data on one side of one sheet of data. The page number storage means for storing the page number X (X is a natural number), and the number of sheets n (n is a natural number) required for double-sided printing based on the page number X stored in the page number storage means. And a determination means for determining the right side of the sheet on the first side of the sheet (2i-
1) (1 ≦ i ≦ n, i is a natural number) page and (X− (2
i-2)) First printing means for continuously printing the data of the 1st to nth sheets of paper and the second side of the sheet divided into left and right (X- (2i-1)) pages. Second data that continuously prints the data for the 2nd and 2nd page on 1 to n sheets of paper
And printing control means for activating the printing by the first printing means in the second printing means area after the printing by the first printing means or the second printing means is completed. .

<Operation> In the printer of the present invention, the printing area of the paper is divided into left and right, and data for two pages is printed on one side of one sheet. Te (2i
−1) (1 ≦ i ≦ n, i is a natural number) page and (X−
(2i-2)) Data from page 1 are printed continuously on 1 to n sheets of paper, and then divided on the second side of the paper into left and right (X- (2i-1)) page and 2i page. Data for the eyes are printed continuously on 1 to n sheets of paper. Alternatively, after the data of the (X- (2i-1))-th page and the 2i-th page are continuously printed on 1 to n sheets of paper on the second surface of the paper in the left-right division, the first surface of the paper is then printed. Divided into left and right (2i-
1) The data of page 1 and page (X- (2i-2)) are continuously printed on 1 to n sheets of paper.

<Example> A detailed description is given below with reference to the drawings.

FIG. 1 shows an embodiment of a word processor equipped with the printing apparatus of the present invention.

In the figure, 11 is a keyboard for inputting text information, editing information, etc., 12 is a CRT for displaying the created text information, 1
Reference numeral 3 is a CPU that controls the entire apparatus, 14 is a text buffer that stores input text information, 15 is a printer that prints text information, and 16 is a print buffer that stores text information that is printed.

Reference numeral 17 is a total page number counter that counts the number of pages of text information to be printed, 18 is a left page counter that sequentially counts the number of pages to be printed on the left page, 1
Reference numeral 9 is a right page counter that sequentially counts the number of pages to be printed on the right page, and 20 is a front / back flag that stores whether to print on the front or back of the paper. 21 is the text buffer 14 at the beginning position of each page of the text information to be printed.
It is a page head position buffer that sequentially stores which position of the.

Next, the editing processing operation of this embodiment will be described with reference to the flowchart of FIG.

First, the text information to be printed is input from the keyboard 11 (S1) or called from the floppy disk (S2) and stored in the text buffer 14. Then, the sentence information is sequentially edited from the beginning, the beginning position of each page is searched, and the position of the beginning position in the sentence buffer 14 is stored in the page beginning position buffer 21 (S3) and the beginning position of each page is stored. By incrementing the total page number counter by 1 each time
The number of pages is calculated (S4).

Next, the front and back flags are cleared (S5), and the number of pages stored in the total page number counter 17 is divided by 4 (S6). When the number of pages is divisible by 4, the quotient is set to n and divided by 4. If not, the number obtained by adding 1 to the quotient (assuming that there is a page until the break of the paper) is n (S7, 8). This n is also the number of required sheets.
Then, "1" is stored in the left page counter 18 and "4n" is stored in the right page counter (S9).

Then, it is judged whether the front and back flag 20 is cleared (S10), and if it is cleared, only the front printing of the paper is continuously performed (S11).

Here, the front face printing will be described in detail. First, based on the numerical value stored in the left page number counter 17 and the numerical value stored in the right page number counter 18, the head position of the sentence information of the page is searched from the page head position buffer 21,
Based on this head position information, the text data of the page is read from the text buffer 14 and stored in the print buffer 16. And one page on the left side of the front side of the first sheet,
The text information of page 4n is printed on the right side. After printing, add 2 to the left page counter and add 2 from the right page counter.
Subtract.

Then, the same operation is performed, and the third page is on the left side of the front side of the second sheet, and the third page from the last (4n
-Print the text information on page 2. (The number of pages is determined according to the contents of the left page counter 18 and the right page counter 19 and the number of pages to be printed.)
The text information is sequentially printed on the page 4 and the 4n-4th page, the 7th page and the 4n-6th page, and the front side of n sheets of paper is printed to finish the front printing. Due to the number of pages, pages without text information are left blank.

The front and back flags are set at the end of front and back printing, and the left page counter is "2" and the right page counter is "4n-1".
Is stored and back printing is performed (S12 to S13 to S10 to S1).
Four).

That is, printing is performed sequentially on the back side of the paper on which the front side has already been printed, but the difference from the case of front side printing is that the pages to be printed on the right side of the paper are printed based on the numerical value stored in the left page number counter 17. Then, the page to be printed on the left side of the paper is determined based on the numerical value stored in the right page number counter 18. (The distinction between the front and the back is determined by the state of the front and back flag 20.) That is, the second to last page (4
The text information of the (n-1th page) is printed by the same operation as the front side, and the text information of the second page is printed on the right side. Then, 2 is added to the left page counter after printing and 2 is subtracted from the right page counter.

Then, by the same operation, the text information of the fourth page from the last (4n-3rd page) on the left side of the back surface of the second sheet and the text information of the fourth page on the right side are printed. Similarly, on the back side, the 4n-5th page and the 6th page, the 4n-7th page and the 8th page
The text information is sequentially printed like the page number, the back surface of the n sheets of paper is printed, and the back printing is completed.

Fig. 3 is a diagram showing the printing positions of each page when the text information consisting of 1 to 8 pages is printed on the front and back sides of two sheets of paper. (A) is the first sheet and (b) is the two sheets. It's an eye. Then, by stacking the first sheet (a) on the second sheet (b) and binding the sheets as shown in FIG. 4, it is possible to make a document in which pages 1 to 8 are successively arranged.

<Effects of the Invention> In the printing device of the present invention, the printing area of the paper is divided into left and right, and the data of two pages is printed on one side of one paper. X is a natural number), and a determining means for determining the number of sheets n (n is a natural number) required for double-sided printing based on the page number X stored in the page number storage means. And the left side of the first side of the paper (2i-
1) (1 ≦ i ≦ n, i is a natural number) page and (X− (2
i-2)) First printing means for continuously printing the data of the 1st to nth sheets of paper and the second side of the sheet divided into left and right (X- (2i-1)) pages. Second data that continuously prints the data for the 2nd and 2nd page on 1 to n sheets of paper
And the print control means for activating the print by the first print means after the printing by the first print means or the second print means is completed. When the printed sheets are bound as shown in FIG. 4, the page order is correctly aligned. Therefore, the paper printed by the printing device can be stored, transported, and referenced as a book, which is very convenient.

Further, according to the printer of the present invention, the front or back printing of the paper is continuously performed, and thereafter the back or front printing of the paper is continuously performed, so that the reversing operation of the paper is required only once. Since front printing and back printing are not repeated for each sheet, the operation of reversing the sheet is reduced and the printing speed is also shortened.

[Brief description of drawings]

FIG. 1 is a block diagram of a word processor which is an embodiment of the present invention, FIG. 2 is a flowchart showing the operation, FIG. 3 is a diagram showing a printing example, and FIG. 4 is a diagram showing a bookbinding example. 11: keyboard, 13: CPU, 14: text buffer, 15: printer, 16: print buffer, 17: total page counter, 18: left page counter, 19:
Right page counter, 20: front and back flags, 21: page top position buffer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-56-11583 (JP, A) JP-A-61-89078 (JP, A) JP-A-62-161642 (JP, A) JP-A-61- 51345 (JP, A) JP 60-21282 (JP, A) JP 62-213381 (JP, A) Actual development 59-113836 (JP, U)

Claims (1)

[Claims] 1. A printing device that divides a printing area of a sheet into left and right and prints data for two pages on one side of one sheet of paper, and stores the number X of pages of data to be printed (X is a natural number). A page number storage means, a determination means for determining the number of sheets n (n is a natural number) required for double-sided printing, based on the page number X stored in the page number storage means; (2i-1) (1≤i≤
(n and i are natural numbers) and (X- (2i-2)) page data are continuously printed on 1 to n sheets of paper, and left and right on the second side of the paper. Second printing means for continuously printing the data of the (X- (2i-1))-th page and the 2i-th page on 1 to n sheets of paper by division; the first printing means or the above-mentioned A printing apparatus comprising: a printing control means for activating printing by the second printing means or the first printing means after printing by the second printing means is completed.