JPS60159067A - Dot printer - Google Patents

Abstract

PURPOSE:To permit the printing from low density to high density by one kind of printing head by inclining the printing head at a given angle according to the kinds of the output patterns of letter codes. CONSTITUTION:A printing head 1 is designed to be turned only by angles to be determined by the length between both ends 15a and 15b of an opening 15. When a code with printing information is sent, Japanese letter code with great dot density or English letter code with small dot density is discriminated by a comparator circuit 17. In the case of Japanese letter code, the printing head 1 is turned to the right direction, and printing is made under the condition that a pin 1B is inclined. At this time, printing with large dot density is made. In the case of English letter code, the head 1 is turned to the left direction by a driver 19, and printing with small dot density is made.

Description

[Detailed description of the invention] [Technical field] The present invention relates to a dot printer.

[Prior Art] Computers have made remarkable progress in recent years, and along with this, input/output devices have also made great progress. In particular, printers as output devices have been put into practical use with a variety of structures, and meet a wide variety of needs in terms of both cost and performance.

Now, in recent years, it has become more common to output kanji (Japanese characters) using computers, and output images with high density are now required. The same applies to graphic processing. However, (with regard to missing character printers, if you try to do this with a dot impact printer, the thickness of the pins that make up the dots is currently limited to φ0.2 mm in terms of physical and mechanical strength. ``When printing with a high degree of FfL, the size of the font must be increased.Also, when printing with high density, the printer head that moves thin pins at high speed requires extremely high accuracy. There was a problem in that it required something different and was expensive.

Here, it goes without saying that the conventionally used 9 x 7 dot printers for alphanumeric display with a pin diameter of 0.25 mm have coarse pixels and cannot cope with the high enrichment of the above-mentioned images; It would be extremely useful if density printing could be done.

[Purpose] The comparative invention was made in view of the conventional problems as described above, and its purpose is to automatically select a printing density according to the output pattern using one type of print head. To provide a dot printer which can successfully print a plurality of types of output patterns from low-density printing to high-density printing.

[Example] Hereinafter, the present invention will be described in detail using drawings showing a preferred example.

The first diagram shows the configuration of the main parts of the dot printer of this embodiment.
In the figure, 1 is a print head attached to a moving guide 2 (=J). 3 is a kite installed parallel to the platen 4, and a moving kite 2 is mounted on this kite par are held slidably. 6 and 7 are pulleys, and the pulley 6 is connected to the rotating shaft of the head moving motor 5 and rotated by the head moving motor 5.

8 is a string hung between pulleys 6 and 7. The string 8 is connected to the moving guide 2 and the pulley 6
．． 7 is transmitted to the moving guide 2 via the string 8, and as a result, the print head 1 and the moving kite 2 or kite par 3L slide left and right. 9 is a paper foot motor connected to the platen 4, and the platen 4 is rotated by the drive of the paper foot motor 9, and the paper 1 on the platen 4 is rotated.
0 is sent. Also,], ! , 12 is ribbon 13
A ribbon foot motor 11A is connected to the take-up spool 11. 14 is a rotary solenoid that rotates the print head 1.

FIG. 2 is an enlarged view showing details of the structure of the print head 1 and movement guide 2 of the dot printer of this embodiment shown in FIG. Print head 1 is, for example, a wire dot type head for displaying 9x7 dots, and has a rotary solenoid 14 fixed to a plate 2A fixed to a moving guide 2.
is attached to the rotating shaft of the The print head 1 can be rotated by driving a rotary solenoid 14. IA is the tip of the print head 1 and is provided with a pin, which will be described later. Reference numeral 15 denotes an open r-shaped portion of a certain length formed in the northern part of the plate 2A, and a locking piece 16 provided on the back side of the print head 1 is positioned protruding from the plate h2A through the r-shaped portion 15. . Further, the opening 15 is formed along a circle having a constant radius centered on the rotation +11+ of the low clean lens 14, as shown in the figure, so that the locking piece 16 can slide relative to the opening 15. With the above configuration, the printing spatula l' 1, which is capable of rotating clockwise or counterclockwise, or the low clean lens 14, rotates clockwise or counterclockwise. At this time, since the locking piece 16 protrudes from the opening 15 as described above, if the print head 1 rotates clockwise from the illustrated state, for example, the print head 1 rotates by the length of the opening 15. , the locking piece 16 is connected to the opening 15
By colliding with the right end 15b of the print head 10, rotation of the print head 10 is stopped. Further, when rotating counterclockwise, the locking piece 16 collides with the left end 15a of the opening portion 15, and the rotation is stopped.

That is, the print head l is located at both ends 15a and 15b of the opening 15.
It can be rotated by an angle determined by the length between the two.

Next, the operation of the dot printer of this embodiment constructed as described in "2" will be explained with reference to FIGS. 3 to 5.

31i4(a) and ('b) are enlarged views showing the arrangement of pins provided at the tip portion IA of the print head 1;
In this embodiment, nine pins IB are arranged in a line with a constant interval d. FIG. 3(a) shows the state when the aforementioned locking piece 16 is located at the left end 15a of the opening 15,
In this state, the pin I is in the same position as the conventional print head.
B is located vertically. When the print head 1 rotates clockwise and the locking piece 16 is located at the right end 15b of the opening 1-1 section 15, the print head 1 moves from position 16 to both ends 15a of the opening 15 as shown in FIG. 3(a). 15b (this angle is assumed to be 0). As the printing spatula I"l rotates, the pin IB is tilted to the right by an amount O from the vertical position in FIG. 3(a), as shown in FIG. 3(b). As a result, the pin IB is vertical spacing d
-1 becomes d cosO, which is smaller than d. Also,
Each pin IB is horizontally spaced d-2 (d 5ir) from each other.
deviates by l).

Now, when printing is performed with pin IB at the position shown in FIG. 3(a), the interval between each dot is d, which is equal to the interval between each pin IB, as shown in FIG. 4(a).

In response, the print head 1 rotates and the pin IB is rotated as shown in Fig. 3 (
In the case of position b), the horizontal deviation cl of each pin IB
If the drive timing is delayed by -2 and the printing is performed by 9J, the interval between each dot i will be d-1 as shown in Figure 4(b), and the printing will be more consistent than the printing in Figure 4(a). will be able to do this.

The operation of the dot printer of this embodiment during printing will be explained using the block 1 sentence in FIG.

When a code with print information is sent, the comparison circuit 17 determines whether the code is a Japanese character (kanji) with a high dot density.
Alternatively, it is determined whether the graphic code is an English character code with a small dot density, and if it is a single Japanese character (or graphic) code, the print head 1 is rotated clockwise by driving the rotary solenoid 14 by the driver 19. The pin IB of the print head 1 is in the state shown in 31.DELTA.(b). At the same time, the pattern generation circuit 18 generates a pattern, and the driver 20 generates a pattern in the head lens 21.
is driven, and printing is performed with the pin IB tilted. At this time, printing with large dot density can be done.

Next, if low i is an English character code, driver 19
As the low clean renoite 14 is driven, the print head 1 is rotated counterclockwise, and the pin IB of the print head is in the state shown in FIG. 3(a). At this time, dot'? f: Printing with a small degree is performed. Incidentally, as the code, for example, an 8-bit code of JISC6220 is used. In this case, Japanese characters or English characters are distinguished depending on the upper bits of the code: °°1" or "0°". In addition to the JISC6220 code mentioned above, graphic mode or high-speed mode printing is also possible. A special control code such as XA may be used in front of the pattern in order to
7, the print head 1 is tilted and high pitch printing is performed.

As described above, according to this embodiment, the non-f1 oblique state and the oblique state of the print head 1 are automatically selected according to the type of printing, and printing with different dot intensities is achieved.This is an extremely practical dot printer. can get.

In addition, in the above explanation, the code included in the code is determined by the comparison circuit 17, and the print head is driven and tilted, or the manual switch that drives the rotary slide/id] 4 is used depending on the print mode. Alternatively, the printing density may be changed by manually tilting the print head 1. Further, in the embodiment, a tri-printer with a wire dot type print head 1 has been described, but any type of printer that performs dot type printing is applicable.

In addition, the case where the printing spatula (1) is positioned in two stages, vertical and tilted at a certain angle is shown, or it may be positioned in two or more stages.In that case, the printing
It is possible to finely adjust the degree.

[Effects] As described above, according to the present invention, an extremely excellent dot printer is provided in which the dot W5 degree can be automatically selected according to the output pattern using the J:rIE print head.

Furthermore, the structure is relatively simple and can be provided at low cost.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the configuration of the main part of a dot printer according to an embodiment of the present invention, FIG. 2 is an enlarged view of the main part of the dot printer shown in FIG. The drum shown in the figure
- Diagram showing the pin distribution 11 of the print head of the printer, negative'
4(a) and 4(b) are diagrams showing examples of printing by the dot printer of FIG. 1, and FIG. 5 is a block diagram illustrating the printing operation of the dot printer of this embodiment. Here, 1...print head, IA...bin, 2...
・Movement guide, 2A... plate, 3... guide/
\-114... Rotary solenoid, 15... Opening, 16... Locking piece, 17... Comparison circuit, 18...
...Bakuun generation circuit, 19.20...Triver. 1st ( Hand System Sales 1j Official Book February 6, 1980 Dear Commissioner of the Japan Patent Office 1, Indication of the Case Patent Application filed on January 31, 1981 (2) Dot Printer 3, Application by person making amendments) Jinten Y Denki Co., Ltd. (and 1 other person) 4. Agent 1-2-12 Toranomon, Minato-ku, Tokyo 105 5. On the day of the amendment order Voluntary action 6. Number of inventions increased by amendment 0 7 , Column 8 of Detailed Description of the Invention of the Specification Subject to Amendment, Contents of the Amendment (1) Page 10 of the Specification, Lines 9 to 10, ``Printing is performed in the state. "Printing with large density will be done." By tilting the head, you can reduce the height of the print, and by operating the head twice, for example, move a vertical 9-pin head twice to print a character with 18 vertical dots. Printing results in suspiciously dense printing.
and correct it. (2) In the specification, page 1 O, line 15, ``At this time, the line of printing with low dot density'' is changed to ``And in one head operation, for example, if the head is 9 pins vertically, the character 9 dots i. Correct "printing line". (3) "Different dot densities" on page 11, line 12 of the specification has been changed to "When not tilted, printing with coarse density can be done with one head operation, and when tilted, printing with high density can be done with two head operations." , there is little variation in font size.
and correct it.

Claims (1)

[Claims] A drive means for tilting a print head having a plurality of dot printing means in the vertical direction, and an input means for inputting a drive signal to the drive means according to the type of output pattern of the character code, A dot printer characterized in that the dot density is changed by changing the vertical interval of the dot printing means by tilting the dot printing head at a predetermined angle by the driving means.