JPH0313346A - Manufacture of injection head - Google Patents

Abstract

PURPOSE:To eliminate clogging of a nozzle at the time of polishing of the end of an injection head and to easily remove burr at the opening of a nozzle head by employing a work of thermally press-adhering the local part of the nozzle in steps of manufacturing the injection head of an ink jet printer. CONSTITUTION:Ink 3 is fed from an ink inlet hole 2 formed on an injection head 1, and injected from the end of a nozzle 5 through an ink passage 4. Nozzle plates R6, R7 are for forming the passage 4, and ink passage lake part is processed by half etching. An upper plate 8, a middle plate 9 have the same purpose as those of plates 6, 7. The totally five plates 6, 7, 7, 9 are locally thermally press-adhered by a locally thermal press-adhering jig 12, and a nozzle end face 11 is polished. Polishing powder clogged in the nozzle 5 is cleaned to be removed. The plate 8 is opened in a sector shape toward an arrow to easily remove burr generated at the time of cleaning and polishing in a short period of time. Then, a whole surface thermal press-adhering work is conducted to form the head 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to the manufacture of an ejection head for an inkjet printer, and particularly to the head manufacturing method that requires thermocompression bonding and polishing of the tip of the head during head manufacture.

[Conventional technology]

Conventionally, in this type of jet head manufacturing process, the thermocompression bonding work for forming the nozzles and ink flow paths inside the jet head is the fourth step.
As shown in the diagram, 2 upper parts (8), nozzle brake) R (6), L
(7) and the middle plate (9) were bonded together by thermocompression, and then the tip of the head was polished for the purpose of improving the directionality of ink jetting.

[Problem to be solved by the invention]

At this time, since the nozzle diameter is small (equivalent to φ0.06), the filler (equivalent to paraffin) intended to prevent polishing powder from entering the nozzle part cannot be uniformly applied to the nozzle part, and during polishing, the Since the polishing powder is forced into the nozzle part, it takes a very long time to clean the jet head after polishing, and it also reduces the head yield. In particular, as the internal structure of the ejection head becomes more complex, this type of problem becomes more serious, resulting in an ejection head that lacks reliability and is expensive.

[Means to solve the problem]

The present invention incorporates head local thermocompression bonding work in the ejection head manufacturing process, thereby eliminating the nozzle baffle during polishing of the head tip, facilitating the removal of debris from the head nozzle opening, and further improving the polishing process. It is an object of the present invention to provide a low-cost and highly reliable ejection head that can improve the head yield in the process.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

Referring to FIG. 1, (1) is an ejection head, and ink (3) flows in from an ink inflow hole (2) formed on (1) and passes through an ink flow path (4) formed inside said (11). Similarly, the above (3) is injected from the tip of the nozzle (5) formed on the end face of the above (1) by a separate movable source (not shown here). Figure 4 shows an exploded view of the vacuum thermocompression adhesive.
) and (7) are nozzle plates 几・L for forming the above-mentioned (4).
-Processed and formed by etching. In the figure (8), the upper plate (9) is the middle plate, and the above (6) and
It has the same purpose as (7).

Next, a total of five sheets (6), (7), (8), and (9) were locally thermocompressed using a local thermocompression bonding jig as shown in Figure 2, and the nozzle was attached to the nozzle for the purpose of improving the directionality of ink jetting. Polish the end face αυ. Now, in this state, cleaning is carried out for the purpose of removing the grinding powder that has been clogged in (5) above, but as shown in Fig.
) are opened fan-shaped in the direction of the arrow, the removal of pars generated during the cleaning and polishing can be easily done in a very short time. Next, the entire surface is subjected to thermocompression bonding work to form the above-mentioned (1). The above (1) after this thermocompression bonding is:
There is no need for the subsequent αυ polishing process, and it can be used as it is as described in (1) above. Through the ejection head manufacturing process as described above, the ejection head can be produced at low cost and with high reliability.

〔Effect of the invention〕

As described above, the present invention improves the yield of the ink jet head by incorporating local thermocompression bonding work in the manufacturing process of the ink jet head, thereby making it possible to obtain a low cost and highly reliable jet head.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of an ejection head according to an embodiment of the present invention;
FIG. 2 is a state diagram of the local heat welding work of this embodiment, FIG. 3 is a state diagram of the head after local heat welding, and FIG. 4 is an exploded view of the conventional head. 1... Ejection head, 2... Ink inflow hole, 3...
Ink, 4... Ink channel, 5... Nozzle, 6...
・Nozzle brake) R, 7... Nozzle plate L18・
...Top plate, 9...Middle plate, 10...
・Ink channel middle part, 11... Nozzle end face, 12...
・Thermocompression bonding jig for local areas.

Claims (1)

[Claims] A method for manufacturing an ejecting head, which is characterized in that a local thermocompression bonding process is incorporated in the method for manufacturing an ejection head that requires thermocompression bonding work.