JPH05330141A - Printer - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a printing device capable of printing with a well-balanced arrangement in which the upper margin of the printing paper is larger than the lower margin without changing the printing mechanism portion. [Structure] A printing direction designating unit capable of setting a reverse printing mode is provided. By specifying the reverse printing mode, the print data rotating means reads the print data stored in the print data storage means from the last line of one sheet of print paper line by line and sequentially converts the read print data into data rotated by 180 degrees. The converted data is printed on the printing paper by the printing means. Therefore, since printing is performed in the reverse direction from the lower end of a sentence based on the print data for one print sheet, the trailing end portion of the print sheet in the sheet feeding direction where the unprintable area occurs is the upper end portion of the print sheet. You can print with a natural and well-balanced layout with a large top margin on the printing paper without changing any parts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a simple type printer such as a thermal printer provided in a Japanese word processor.

[0002]

2. Description of the Related Art A simple type Japanese word processor having a printer section (2) such as a thermal printer as shown in FIG. 6 has a lid body for the printer section (2) as shown in FIG. The (3) is opened, the printing paper (4) is inserted using it as a guide, and printing is performed on the printing paper (4). And this printer unit (2)
As shown in FIG. 8, the printing paper (4) inserted toward the downward arrow is guided between the feed roller (6) and the pinch rollers (7a), (7b) along the guide plate (5). The paper is fed and fed, and printed by the print head (8).

[0003]

By the way, in the above-mentioned printing apparatus, for example, print data of N lines (L1) to (Ln) as shown in FIG. 9A is printed on the printing paper (4). In this case, the first line (L
After printing the data of 1), the paper is fed, and the same operation is sequentially repeated to print up to the data of the Nth line (Ln). Therefore, the printing paper (4) is sequentially printed in the direction shown by the solid line arrow in FIG.

In this type of printing apparatus, printing cannot be performed when the trailing edge of the printing paper (4) is separated from the pinch roller (7b) in the subsequent stage and the paper feeding is stopped. That is, FIG.
As shown in (c), a portion having a width corresponding to the distance (l) between the pinch roller (7b) at the rear stage and the print head (8) at the lower end portion of the print sheet (4) becomes the unprintable area, and the print sheet (4) When viewed as a whole, the shaded area in FIG. 4D is the non-printable area, and the printable area is arranged above the printing paper (4) in a biased manner. However, when a sentence is printed on the paper (4), it is usual to make the upper margin larger than the lower margin, so that not only the printing becomes unnatural in terms of balance, but also the printed paper (4). It is common to bind at the upper end portion when binding, and from that point too, it is inconvenient that the upper margin is small. Further, since the number of pages is printed at a position unnaturally separated from the lower end of the printing paper (4), the printing becomes more unnatural in terms of balance.

SUMMARY OF THE INVENTION Therefore, it is a technical object of the present invention to provide a printing apparatus capable of printing with a well-balanced arrangement in which the upper margin of the printing paper is large without changing the printing mechanism portion.

[0006]

According to the present invention, as a technical means for achieving the above-mentioned object, a printer is constructed as follows. That is, in the printing apparatus in which the print data stored in the print data storage means is printed on the print paper by the print means, and the unprintable area is formed at the trailing end portion of the print paper in the paper feed direction, the reverse printing mode is set. And print data for sequentially reading the print data for one sheet of printing paper stored in the print data storage means from the last line when the reverse printing mode is set, and converting it into data in a state rotated by 180 degrees. And a rotating means.

[0007]

When the reverse printing mode is set by the print direction designating means and the print paper is set upside down, the print data rotating means reads the print data stored in the print data storage means, for example, one line at a time from the last line. 18
The data is sequentially converted into data in a state of being rotated by 0 degree, and the converted data is printed on the printing paper by the printing means. Therefore, the print data is printed in reverse order from the lower end of the sentence based on the print data for one sheet of printing paper, and the rear end portion of the printing paper in the paper feed direction is the upper end portion of the printing paper. It is possible to print with a natural and well-balanced layout in which the top margin of the printing paper is enlarged without changing the mechanical part.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows a functional block diagram of an embodiment of the present invention, in which the print data stored in the print data storage means (10) is transferred to the print means (11) as it is, in addition to the existing configuration of the printing apparatus. A printing direction designating means (9) for selectively designating either normal printing or reverse printing, and a print data storing means (10) when reverse printing is designated by the printing direction designating means (9). It is characterized in that a print data rotating means (12) for converting the stored print data into data in a state of being rotated by 180 degrees in an image manner is additionally provided.

FIG. 2 is a schematic block diagram of a Japanese word processor to which the above embodiment is applied.
The microprocessor (14) of 3) receives a key input from the keyboard (21) including the above-mentioned printing direction designating means (9) via the key control unit (18), and then the ROM (15)
Various signal processes are performed in accordance with the program stored in the print data storage means (1)
0) and the display control unit (1).
The processing result is displayed on the display device (20) via 7), and is printed on the printing paper (4) by the printer (22) via the printer control unit (19) constituting the printing means (11).

Next, the operation of the above embodiment will be described in detail with reference to the flowchart of FIG. 3 and with reference to the explanatory views of FIGS. 4 and 5. First, it is determined whether or not reverse printing is designated by the printing direction designation key on the keyboard (21) (step S1). If reverse printing is not designated, normal printing is performed. Since this normal printing is the same as the conventional one, it will be briefly described. The printing paper (4) is set as usual (step S2), and "N = 1" is set as the first line to be printed (step S3). Then, as shown in FIG. 9B, the data of the set first line (L1) is read (step S
4), the read data is printed on the printing paper (4), and then the paper is fed (step S5), and "N = 1".
Is set to "2" by newly adding "1" to "2" (step S6), and "N" is added to "the number of lines to be printed" and "1" for printing the number of pages. Until it is determined that the value has reached (step S7), the process jumps to step S3 and the same routine as described above is repeated.

On the other hand, when reverse printing is designated, the printing paper (4) is set upside down with respect to normal insertion (step S8). Then, after the number of lines to be printed on one print sheet (4) is set as "N" (step S9), the print data of the final line corresponding to the set number of lines is read (step S9). S1
0), the read print data is rotated by 180 degrees (step S11). Last line (Ln) in this case
Is the print data of the number of pages, but in order to make it easy to understand, 2 from the end in the print data as shown in FIG.
The data of the second line (Ln-1) is transferred to the RAM (1) which is the print data storage means (10) as shown in FIG.
The case of reading from 6) will be described. Now, it is assumed that the data of one line is composed of x bytes horizontally and m bits vertically. Then, the read 1 shown in FIG.
As shown in the enlarged view of the character data of "E" which is the last block of the line data, the uppermost address "a" is read and the MSB and LSB are inverted. After that, the first block of the line buffer memory shown in FIG. 7E is written to the bottom address “b + (m−1) x)” shown in FIG. After that, in order, the data at the address “a + x” is converted into a state rotated by 180 degrees, written to the address “b + (m−2) x”, and finally the data at the address “a + (m−1) x” is set to 1
Write to address "b" while rotated 80 degrees. Similarly, blocks of character data of "D", "C", "B", ... Are sequentially written in the line buffer memory in a state of being rotated by 180 degrees.

When the writing of the data for one line to the line buffer memory is completed, the data written in the line buffer is printed on the printing paper (4) by the printing means (11), and then the paper is fed (step S1
2). Then, the value obtained by subtracting "1" from "N" is newly updated and set to "N" (step S13), after which the process jumps to step S10 to repeat the same routine,
Printing is performed by repeating the same operation until it is determined that printing of all data is completed by "N = 0" (step S14).

Therefore, the printing procedure by this printing device is as follows.
When printing the print data as shown in FIG. 5A on the print paper (4), first, as shown in FIG. 5B, the data of the final line (Ln) rotated by 180 degrees is printed. After that, the paper is fed, and similarly, the first line (L1) is sequentially printed one line at a time. Therefore, the printing paper (4) is printed in the direction of the solid arrow in FIG. As a result of the setting, a margin is formed on the upper portion of the printing paper (4) located on the rear side in the paper feeding direction. Therefore, when the printing paper (4) is viewed as a whole, the shaded area in FIG. 3D is a non-printable area, and the printable area is very naturally arranged below the printing paper (4). Printed in a well-balanced arrangement.

In the above embodiment, the case in which whether or not reverse printing is designated is determined by whether or not there is a key input from the keyboard (21) as the printing direction designation means (9) has been described. In addition to this, it is possible to adopt a means for automatically selecting reverse printing when printing of the number of pages is specified, a means for automatically selecting normal printing or reverse printing by setting a margin, and the like. it can. Also,
18 pieces of print data for one sheet of printing paper can be obtained by software.
Although the case of rotating it by 0 degrees is illustrated, this may be performed by hardware.

[0015]

As described above, according to the printing apparatus of the present invention, by setting the reverse printing mode by the printing direction designating means, the printing data rotating means causes the printing data stored in the printing data storage means to be printed on the final line. Each line is read out and sequentially converted into data rotated by 180 degrees, and the converted data is printed on the print paper by the printing means. Therefore, the print data for one print paper is used. Since the text is printed in reverse order from the bottom edge, the trailing edge of the print paper in the paper feed direction that causes the unprintable area is the top edge of the print paper.
It is possible to print with a natural and well-balanced arrangement in which the upper margin of the printing paper is enlarged without changing the printing mechanism portion, and the number of pages can be printed near the lower end of the printing paper. Further, since the upper margin is large, it is easy to bind a plurality of printed printing sheets.

[Brief description of drawings]

FIG. 1 is a functional block diagram of an embodiment of the present invention.

FIG. 2 is a block diagram of the same as above when applied to a Japanese word processor.

FIG. 3 is a flowchart of the same.

FIG. 4 is an explanatory diagram of an operation of rotating print data by 180 degrees.

FIG. 5 is an explanatory diagram of a printing procedure and printing arrangement on a sheet in the above.

FIG. 6 is a perspective view of a Japanese word processor to which the present invention is applied.

FIG. 7 is a perspective view of the printer unit in the same state as above.

FIG. 8 is a schematic vertical sectional view of the printer section of the above.

FIG. 9 is an explanatory diagram of a printing procedure of a conventional printing device and a printing arrangement on a sheet.

[Explanation of symbols]

 4 printing paper 9 printing direction designating means 10 print data storing means 11 printing means 12 print data rotating means

Claims (1)

[Claims] 1. A reverse printing mode is set in a printing device in which the printing data stored in the printing data storage means is printed on a printing paper by the printing means, and an unprintable area is formed at the trailing end of the printing paper in the paper feeding direction. The print direction designating means and the print data for one print sheet stored in the print data storage means when the reverse printing mode is set are sequentially read from the last line and converted into data rotated by 180 degrees. And a print data rotating unit for performing the printing.