JPS6224531Y2 - - 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 method, it is necessary to provide an ink-impregnating material for each wire, which has the disadvantage that the structure of the printing head becomes complicated.

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.

In FIG. 1, 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.

As shown enlarged in FIGS. 2 and 3, the print head 3 has a plurality of (seven in this embodiment) dot holes 6, 6, . These dot holes 6, 6... are arranged at intervals.
The tips of the wires 7, 7... are slidably inserted into them. Electromagnets 8, 8, . I'm starting to do it.

At the top of the uppermost dot hole 6, an ink supply hole 10 is provided which penetrates from the printing surface 4 to the back surface 5 similarly to the dot hole 6, and whose tip opening is closed with a lid 9 or the like. An ink supply pipe 11 is inserted into the supply hole 10, and ink is constantly supplied at a low pressure from an ink supply source (not shown) during operation of the printer. Further, an ink recovery hole 12 having the same configuration as the ink supply hole 10 is provided below the lowest dot hole 6, and an ink recovery pipe 13 is inserted into the ink recovery hole 12. The ink accumulated in the print head 12 is collected outside the print head 3.

A narrow groove 14 communicates between the dot holes 6, 6..., between the uppermost dot hole 6 and the ink supply hole 10, and between the lowermost dot hole 6 and the ink recovery hole 12. The ink supplied from the supply pipe 11 passes through the groove 14 to each dot hole 6, 6.
. . . is supplied to the minute gaps between the wires 7, 7 .

This device is as described above, and when the printer is operated, the ink supplied from the ink supply source to the ink supply hole 10 through the pipe 11 passes through the groove 14 to the wire in each dot hole 6, 6... 7,7...
It gradually penetrates into the minute gaps between the wires 7, 7... and adheres to the tips of the wires 7, 7, . . . At this time, since each dot hole 6, 6... is communicated by the narrow groove 14, the ink is uniformly distributed in each hole 6, 6... by gravity without dripping. The wires 7, 7 are smoothly supplied in small amounts.
...There is no uneven adhesion of ink to the tip. And the tip of each wire 7, 7... is the third wire when not printing.
As shown by the solid line in the figure, the dot holes 6, 6... wait slightly behind the position of the printing surface 5, and during printing, the selected electromagnet 8 is driven as shown by the imaginary line, and the selected one is selected. The tip of the wire 7 extends from the printing surface 5 and comes into contact with the printing paper 2 to perform dot printing. Such an 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 the print paper 2 has 7 rows and 5 rows.
One character is printed in a column dot matrix format.

This idea is as described above, and there is no need to provide an ink-impregnating material for each wire as in the conventional method. Through the grooves that communicate between the dot holes and between each dot hole, the ink in the ink supply section is made to penetrate into the minute gap between each dot hole and the wire by its own weight, and is smoothly supplied to the tip of each wire. In addition, since only one ink supply section corresponding to a conventional ink impregnating material is required, the structure is extremely simple, and there is an excellent effect that manufacturing costs can be kept low.

[Brief explanation of the drawing]

Figure 1 is a side view of the wire printer of this invention.
FIG. 2 is an enlarged perspective view of the main part, and FIG. 3 is an enlarged sectional view showing the operating state. 1... Platen, 2... Printing paper, 3... Printing head, 4... Printing surface, 6, 6... Dot hole,
7,7... wire, 8,8... electromagnet, 10...
Ink supply hole, 11... Ink supply pipe, 1
2... Ink recovery hole, 13... Ink recovery pipe, 14... Groove.

Claims (1)

[Scope of utility model registration request] In a wire printer in which a plurality of dot holes are provided vertically in a printing head and the tip of a wire is slidably held in these dot holes, an ink supply section is provided above the uppermost dot hole, and an ink supply section is provided above the uppermost dot hole. Between the ink supply section and the top dot hole and between each dot hole, the ink supplied from the ink supply section can sequentially penetrate from above to below due to its own weight into the minute gap between each dot hole and the wire. A wire printer characterized in that the dots are communicated by a groove narrower than the diameter of the dot hole.