JPS63207654A - Serial dot printer - Google Patents

Abstract

PURPOSE:To enhance printing quality and durability, by a method wherein the interval between adjacent leaf springs is made smaller than the board thickness of the leaf spring. CONSTITUTION:To ensure the width of a leaf spring 6 at the tip end part thereof, a slit 13 between the leaf springs 6 is made smaller than the board thickness of the leaf spring 6. The slit 13 with the small width can be realized by a method in which only a part of the smallest slit width (the tip end of the leaf spring) is machined by wire-cutting capable of finely machining the slit in width, and the other part is machined by etching, press, etc., which allows an easy machining. The width of the slit 13 between the leaf springs is made smaller in this manner, whereby the tip end of the leaf spring can be made large with the same pitch. Therefore, the rigidity is enhanced at the tip end of the leaf spring and unwanted vibration, etc., is hardly generated, which enhances printing quality, printing speed, durability, and the like.

Description

[Detailed description of the invention] [Purpose of Takumei] (Industrial application field) The present invention relates to a serial type dot printer.

(Prior Art) Conventionally, in a dot printer having a printing pin e arranged on a straight line with a constant inclination with respect to the scanning direction of the printing machine groove, a screw spring constituting each printing hammer is used. 6 is an integrally grooved Saka spring with a thickness Q of about 5 mm as shown in FIG.
It was manufactured using I and etched wood. and,
A printing hammer was constructed by attaching a printing pin 7 to the four temporary spring tips.

The width of the slit between each leaf spring 6 in a temporary spring 3 with such a structure is determined by the
Due to the Roe nature, a larger slit than the four wood is inevitably formed. Therefore, the slit width is larger than the plate thickness and is 0.
The tll is approximately 6 to 9.7 mm, resulting in a difference in vertical pressure as shown in Figure 6, which shows a smaller print head.

The spring width at the tip 4 of the temporary spring with a printing pin pin pitch of about 2 mm is extremely poor (9. The rigidity of the spring tip 4i'lS decreases, and the spring tip causes unstable vibrations during printing, resulting in poor printing quality. The decline in

This may lead to a decrease in printing speed.

In addition, there were also problems such as deterioration of durability.

(While Katsumei tries to solve the problem, 1 point) As mentioned above, in conventional serial dot printers, the width of the four spring tips becomes narrower as the printer becomes smaller, resulting in a decrease in print quality and a decrease in printing speed. This resulted in a decrease in the durability and deterioration of durability.

The main residence space was created in consideration of the above circumstances.

The purpose is to provide a serial type dot printer with excellent printing quality and durability.

[Structure of the invention]

(Means for Solving the Problem) In $3 price-priced serial type dot printers, the interval width between adjacent temporary springs is made smaller than the plate thickness of the temporary springs.

(For 1) Since the interval width of the temporary spring is made smaller than the plate thickness of the Saka spring in a QZ shape, the tip 4 of the temporary spring (printing bottle support part) can be made thicker with the same pin pitch as before. Therefore, the rigidity of the tip of the leaf spring is increased, and unnecessary swinging does not occur.

(Ii 7111) Akira Hondomari will be explained below with reference to the drawings.

FIG. 3 is a schematic diagram of the printer according to Hontakuma. In the figure, reference numeral 8 indicates a print head, 2 a guide rail, 3 a platen, 4 a print sheet, and 5 an ink ribbon.

The print head 1 is attached to a gear ridge (not shown), and the gear ridge reciprocates above the guide rail 2 within the range shown by the dotted line in the figure, which is wider than the width of the print paper 40.

Printing hammers (not shown) housed in the print head 1 are moved in synchronization with the direction C of moving the carriage, and printing is performed on the print paper 4 via the ink ribbon 5. After one line of printing is completed, reverse the direction of movement of the gear ridge.

Further, by feeding the printing paper 4 by one line, printing of the first line is performed.

@ 4 IIJ *Figure 5 is a front view of the print head of the printer at the front desk, and a side view as seen from the input direction. 6 is a spring, 7 is a printing bottle, 8 is a carriage, 9 is an iron core, 10 is a coil, 11 is a permanent magnet, and 12 is a head base.

The printing hammer is stored next to the temporary spring 6 and the printing bin 7. To create a hammer poem, first, by energizing the coil 10 against the printing hammer held on the end face of the iron core 9 against the spring force of the leaf spring 6 by the magnetic attraction force of the permanent magnet, The magnetic field of the permanent magnet 11 is canceled and the spring force moves the printing hammer toward the ink ribbon (not shown) and printing paper.
This is done by encouraging people to do so. As shown in FIG. 4, the printing hammer used to create such a phrase is applied so that the printing bins 7 are lined up in a straight line at equal intervals, and the vertical pressure is varied. As a result, the pin pitch between printing pins becomes smaller.
And coil 10. Since space for the iron core 9 and the like can be secured, the width of the print head 10 is reduced, and a small print head can be realized. Attach this print head by tilting it at an angle that will hit the character bins at both ends for one character, as shown in Figure 4.

Each printing hammer is driven to perform printing while the middle cartridge moves the printing paper between the two sides. With this result, a print head capable of high-density printing can be easily realized.

However, when the print head of such an I#la dot printer is scaled down with zi, as shown in Figure @6, the ri
The width of the spring tip became narrow, the rigidity of the spring tip decreased, and sufficient printing could not be performed.

Figure 1 shows a front view of Hontakuma's serial type dot printer. In Hontakuma's print head, in order to ensure the width of the tip of the temporary spring, the slit 13 between the temporary springs is made wider than the plate thickness of the temporary spring 6. I made it thinner.

In order to reduce the width of this slit 130, for example, λ, only the thinnest part of the slit (temporary spring tip) is used.

The width of the slit can be made thinner by cutting wire, etc., and the pond part can be easily etched by 710.
By performing IM processing in a press, etc., it can be extended for a long time.

Figure 2 shows six other cases of leprosy in the Ming Dynasty.

Between these guns, the slit 13 in the 4 parts of the temporary spring tips can be made smaller by assembling the temporary spring parts 15, 15' having the upper and lower springs 6, 6' in parts.

By increasing the width of the slits 130 between the temporary springs in this way, the tips of the temporary springs can be made thicker with the same pitch interval as before. <<, print quality,
Printing speed, durability, etc. are improved.

[Haruaki's results]

As described in detail above, according to the present invention, it is possible to achieve small size and print quality.
A serial dot printer with excellent printing speed and durability can be obtained.

[Brief explanation of the drawing]

1 and 2 are front views showing the actual row of temporary springs of Hon-Okiri's serial printer. @Figure 3 is a schematic 4-axis view of a serial type dot printer related to one-line printing, Figures 4 and 5 are a schematic plan view and side view showing the print head of Akira Hondomari's serial type dot printer,
FIG. 6 is a front view of the tip of a temporary spring to illustrate the conventional problem. 1... Print head, 3... Platen, 6.6'...
・Plate spring, 7... Printing pin, 8... Warring ridge, 9
... Iron core. 10...Coil, 11...Permanent magnet, 13...Slit. Agent: Masu Rishi, Nori, Chika, Yu Do, Takehana Kikuo, Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, Figure 6.

Claims (1)

[Scope of Claims] A serial dot printer having a plurality of printing pins arranged on one straight line and a plurality of leaf springs arranged adjacent to each other with this straight line as a boundary and supporting the printing pins, A serial type dot printer characterized in that an interval width between adjacently arranged leaf springs is smaller than at least a thickness of the leaf springs.