JPH0230867B2 - PURINTA - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to a printer, and particularly to a printer that outputs printed paper after double-sided printing so that it can be easily filed.

(b) Prior Art and Problems Conventionally, printing paper output from a computer line printer has been printed on only one side.

FIG. 1 is a diagram showing such a conventional printing format and binding method. As shown in the figure, after information was printed on each page P ₁ , P _{2 ,} . This method not only requires a large amount of paper, but also has the disadvantage that since the paper is continuous paper, it takes a lot of effort to separate each page and then file it without disturbing the order of the pages.

(c) Object of the Invention In view of the above-mentioned conventional drawbacks, an object of the present invention is to provide a printer that outputs output in a manner that saves printing paper and facilitates filing.

(d) Structure of the invention The purpose of this invention is to provide a processing unit that divides print content into page units and sends them out as page data;
(1+4n) of the data sent from the processing unit
th (however, n = 0, 1, 2, 3,...) and the th (4th
+4n)th page data is sent to the first page buffer, and the (2+4n)th and (3+4n)th page data are sent to the first page buffer.
a front-back selection unit that sends the page data of the page data to the second page buffer; a format conversion unit that converts the data of the (3+4n)th and (4+4n)th pages so that the characters and character configurations thereof are upside down; , a printing unit for printing simultaneously or continuously on both sides of the printing paper, and prints the (1+4n)th page data on one side of the mth page of the printing paper and the (2+4n)th page data on the other side. Print the page data of the (4+4n)th page on one side of the (m+1)th page,
This is achieved by providing a printer characterized in that the (3+4n)th page data is printed on the other side.

(e) Examples of the invention Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Figure 2 is a diagram showing the printing format and binding method on printing paper according to the present invention, Figure 3 is a diagram showing the relationship between the printing paper and print data of the present invention, and Figure 4 is a diagram showing a book using a laser printer as an example. FIG. 1 is a configuration diagram showing an embodiment of the invention.

In Figures 2 and 3, 11 is line printer paper, 11a is the front side of the paper, 11b is the back side of the paper, 12 is the paper feed hole of the paper, 13 is a binder for binding the papers, and P _i indicates each page. . In FIG. 4, 21 is a computer, 22 is a printer, 23 is a hopper, 24 is a stacker, 25 is a data processing unit,
26 is a front and back selection section, 27 and 28 are front and back page buffers, 29 and 30 are recognition sections, 31
and 32 are format converters for converting the printing format upside down, 33 and 34 are front and back side laser oscillators, 35 and 36 are front and back side photosensitive drums, and arrows indicate the flow of data.

For example, if Sapporo branch P ₁ , Tokyo branch P ₂ , Osaka branch P ₃ , Nagoya branch P ₄ , Fukuoka branch P ₅ , etc. are printed sequentially from the first page, the printout of the printer according to the present invention will be as shown in FIG. It becomes like this. That is, Sapporo branch P ₁ , Nagoya branch P ₄ , Fukuoka branch P ₅ , etc. are printed on the front side 11a of the paper 11, and the paper 11
Tokyo Branch P ₂ , Osaka Branch P _{3 . . . are printed on the back side 11b, and Nagoya Branch P 4 .} The other pages will be upside down. By printing in this manner, the output results of the printing press are bound together in the binder 13 and then the pages are separated, resulting in a book format, and the order of the pages is not disturbed.

Here, we will consider how many pages are printed on the front and back sides of the paper 11.

As shown in FIG. 2, the first
When pages are printed, the number of pages printed on the front side 11a and the back side 11b are as follows: Front side P ₁ , P ₄ P ₅ , P ₈ P ₉ , P ₁₂ ... Back side P ₂ , P ₃ P ₆ , P ₇ P ₁₀ , P _{11 .} . . and it can be seen that four pages are printed periodically on the front and back sides as one unit. The third one shows the relationship between the data on each page and the paper page.
It is a diagram. 11a and 11b indicate the front and back sides of the printing paper 11, and m indicates the number of pages.
On the surface of the mth page of paper 11, the (1+4n)th
The (n=0, 1, 2, 3...)th page data is printed on the back side, the (2+4n)th page data is printed on the back side, and then the (4+4n)th page data is printed on the front side of the (m+1)th page. The (3+4n)th page data will be printed on the back side of the page data.

FIG. 4 is a configuration diagram of an embodiment of a printer capable of printing as described above. The data processing section 25 in the computer 21 divides the print content into pages and sends them as page data to the front/back selection section 26 .

The front/back selection unit 26 sequentially transfers the (1+4n)th and (4+4n)th page data among the input page data to the front side page buffer 27 in the printer 22, and
The 4n)th and (3+4n)th page data are sorted and sent to the back side page buffer 28. The first
The (1+4n)th page data among the (1+4n)th and (4+4n)th page data input to the recognition unit 29 of the laser oscillator 3
3 and a photosensitive drum 35, etc., and is printed on the front side of the paper in a normal format. However, the (4+4n)th page data is input to the first format converter 31, so that the sentence structure is upside down (Nagoya branch in Figure 2).
After the format is converted (as in P ₄ ), it is printed on the front side of the paper in the print section. Similarly, the (2+4n)th and (3+4n)th page data sequentially input to the back buffer 28 are input to the second recognition section 30. The first of these (2+4n)
The second page data is directly inputted to a printing section including a second laser oscillator 34, a second photosensitive drum 36, etc. without passing through the second format conversion section 32, and is printed on the back side of the paper. However, the third (3+
4n)-th page data is format-converted by the second format conversion unit 32 (second
(as shown in Osaka Branch P ₃ ) is printed. At this time, double-sided printing may be performed by printing on the front and back sides at the same time, but it is also possible to print on the back side continuously after printing on the front side.

Note that the data processing section 25 and the front and back distribution section 26
The electronic computer 21 is provided with the following information, but is not limited to this.
The printer 22 may also have one.

Furthermore, in this embodiment, the continuous paper is folded in a mountain fold (P2) at _P1 and _P4 of the paper 11 shown in FIG _.
Although the case where printing starts from P ₁ in the state of (P 3 and P ₃ are valley folds) has been described, printing may also start from P ₄ . In this case, one page will be left blank, but it is sufficient to always start printing from the position _P1 .

(f) Effects of the Invention As explained in detail above, the printer of the present invention distributes print data page by page and prints it on both sides of the printing paper, which saves printing paper and facilitates book-style filing. This has the effect of

[Brief explanation of drawings]

FIG. 1 is a diagram showing the printing format and binding method by a conventional printer, FIG. 2 is a diagram showing the printing format and binding method by the printer of the present invention, and FIG. 3 is a diagram showing the relationship between print data and page position. FIG. 4 is a configuration diagram showing an embodiment of the printer of the present invention. In the drawing, 11 is printing paper, 11a is the front side of the paper, 11b is the back side of the paper, 12 is a paper feed hole, 13 is a binder, 21 is a computer, 22 is a printer, 23 is a hopper, 24 is a stacker, 25
is a data processing section, 26 is a front/back selection section, 27, 28
is the page buffer, 29, 30 is the recognition unit, 31,
32 is a format converter, 33 and 34 are laser oscillators, and 35 and 36 are photosensitive drums, respectively.

Claims (1)

[Claims] 1 A processing unit that divides the print content into page units and sends it out as page data, and a (1+4n)th (1+4n)th (however, n
=0, 1, 2, 3,...) and the (4+4n)th page data to the first page buffer,
a front and back selection unit that sends the (2+4n)th and (3+4n)th page data to a second page buffer;
It consists of a format converter that converts the data on the mth page of the printing paper so that its characters and sentence structure are upside down, and a printing section that prints on both sides of the printing paper simultaneously or continuously. The (1+4n)th page data on one side,
The (2+4n)th page data is printed on the other side, and the (4th)th page data is printed on one side of the (m+1)th page.
A printer characterized in that the +4n)th page data is printed on the other side and the (3+4n)th page data is printed on the other side.