JPS6228434Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a wire printer.

Conventional wire printers are, for example, Utility Model 53-2652.
As disclosed in the publication, an ink-impregnated material is arranged in contact with the sliding surface of the wire tip, and when the wire tip advances, ink is supplied from the ink-impregnated material to the tip surface. Ta. Therefore, in this device, an ink impregnating material and an ink supply pipe must be provided for each wire, which complicates the structure of the print head, making processing extremely difficult and increasing costs. In addition, when not printing, the ink in the ink supply pipe tends to dry and solidify, resulting in frequent ink clogging, which impairs printing quality.

The object of this invention is to provide a wire printer that can eliminate the drawbacks of the conventional printers mentioned above.

This invention will be described below with reference to embodiments shown in the drawings.

1 to 3 show one embodiment of this invention, in which 1 is a platen, 2 is a printing paper supported on the platen, and 3 is a printing head disposed opposite to the printing paper. A plurality of (seven in this embodiment) dot holes 6, 6... are arranged vertically at equal intervals in the print head 3, penetrating from the print surface 4 to the back surface 5, and these dot holes 6, 6... The tips of the wires 7, 7, . . . are slidably inserted. Electromagnets 8, 8... are disposed at the rear end of each wire 7, 7..., and these electromagnets 8, 8... drive the tip of each wire forward and backward in the printing head 3. It's summery.

One side wall of the print head 3 has dot holes 6,
One ink impregnating material 9 is disposed for commonly supplying ink to the dot holes 6, . A plurality of narrow grooves 10, 10, . In addition,
When the printer is operating, ink is constantly supplied to the upper part of the ink-impregnated material 9 at a low pressure from an ink supply source (not shown).

FIG. 4 shows a second embodiment of this invention, in which an ink-impregnating material 9' is arranged on the upper wall of the printing head 3, and narrow grooves 10', 10', . . .
The dot holes 6, 6, . . . are formed on the printing surface 4 so as to be inclined downward from the positions where the dot holes 6, 6, .

FIG. 5 shows a third embodiment of this invention, in which ink-impregnated material 9'' is arranged in a gate shape on both side walls and the upper wall of the print head 3, and narrow grooves 10'', 10''... are impregnated with ink. The printing surface 4 is formed so as to be inclined downwardly from the position of both side walls where the material 9'' is placed symmetrically to each dot hole 6, 6, etc., and the other parts are the same as in the first embodiment. It is becoming.

FIG. 6 shows a fourth embodiment of this invention, in which an ink impregnating material 9 is arranged on one side wall of the print head 3, an ink absorbing material 11 is arranged on the other side wall, and narrow grooves 10, 10... The ink impregnation material 9
Ink absorbing material 11 from one side wall position where
Each dot hole 6,
6... is formed on the printing surface 4 so as to be inclined downward in a straight line, and the other parts are the same as those in the first embodiment.

Next, the operation of this invention will be described based on the above embodiment.

During operation of the printer, the ink supplied from the ink supply source to the upper part of the ink impregnating materials 9, 9', 9'', 9 permeates downward one by one due to gravity, and at the time of this permeation, the ink flows into the narrow grooves 10, 10, 10', 10',
10'', 10'', 10, 10..., and the inclination of the narrow grooves causes each dot hole 6,
It attaches to the tip surfaces of the wires 7, 7... held in the wires 6....

When not printing, the tips of the wires 7, 7... stand in the dot holes 6, 6..., slightly retreating from the position of the printing surface 4, as shown by solid lines in Figure 3, and when printing, as shown by imaginary lines. The selected electromagnet 8 is driven so that the tip of the selected wire 7 advances from the printing surface 4 and comes into contact with the printing paper 2, and at this time, ink adheres to the tip surface of the wire 7 at the time of said advancement. Therefore, dot printing is performed on the printing paper 2. This operation is performed by changing the relative position in the horizontal direction between the print head 3 and the print paper 2 five times, and one character is printed on the print paper 2 in a dot matrix format of 7 rows and 5 columns. Ru.

This invention is as described above, and there is no need to provide each wire with an ink-impregnated material as in the conventional method. The ink from the ink-impregnating material permeates into the minute gap between the dot hole and the wire and is constantly and smoothly supplied to the tip of the wire. Moreover, there is no need to use an ink supply pipe as in the past, so the ink It also prevents clogging and allows for extremely high quality printing. In addition, only one common ink-impregnating material is required, and because thin grooves are formed on the print surface of the print head where it is easy to form, the structure of the print head is extremely simple and easy to process, reducing costs. It has excellent effects such as being economical and free of charge.

[Brief explanation of the drawing]

Fig. 1 is a side view showing one embodiment of this invention, Fig. 2 is an enlarged front view of the printing head, Fig. 3 is an enlarged sectional view showing the operating state taken along the - line in Fig. 2, and Fig. 4 The figure is an enlarged front view of a print head showing a second embodiment of this invention, FIG. 5 is an enlarged front view of a print head showing a third embodiment of this invention, and FIG. 6 is an enlarged front view of a print head showing a fourth embodiment of this invention. FIG. 1...Platen, 2...Print paper, 3...Print head, 4...Print surface, 6...Dot hole, 7...
Wire, 8... Electromagnet, 9, 9', 9'', 9...
Ink impregnating material, 10, 10', 10'', 10...
Narrow groove, 11... Ink absorbing material.

Claims (1)

[Scope of utility model registration request] In a wire printer in which a print head is provided with a dot hole and a tip of a wire is slidably held in the dot hole, a piece of ink is provided on a side wall or an upper wall of the print head for supplying ink to the dot hole. Place an impregnating material on the printing surface of the printing head,
One end is connected to the ink-impregnated material, and the other end is connected to the dot hole, and a narrow groove for ink distribution is formed so that the ink supplied from the ink-impregnated material flows into the minute gap between the wire and the wire in the dot hole. A wire printer characterized by forming.