Ink jet recording head

Details Ink jet recording head Ink jet recording head

1994-12-28

1999-03-09

Le, N.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 41, B41J 2145, B41J 215

Patent

active

058807560

ABSTRACT:
An ink jet recording head that is formed by laminating a plurality of thin plate members, each having a plurality of holes. The holes of the adjacently stacked thin plate members cooperate to form ink flow paths each continuously extending to communicate a nozzle opening with a respective pressure producing chamber, which is connected to an ink supply section. In such ink jet recording head, the holes can be aligned or shifted with respect to each other, and allow ink to flow smoothly, thus preventing stagnation of air bubbles contained in the ink within the print head. Further, the nozzles openings are arranged in arrays in an auxiliary scanning direction. The nozzle opening arrays are divided into three groups spaced apart from each other at a predetermined interval in a main scanning direction. Nozzle openings belonging to groups arranged on both sides of the middle group are positioned vertically between adjacent nozzle openings of the middle group. A nozzle opening of the middle group is positioned uppermost or lowermost in the auxiliary scanning direction, so that lines printed by the nozzle openings belonging to the groups arranged at both sides interpose a line printed by the nozzle openings of the middle group to reducing inter-line error due to misalignment of the recording head with respect to a printing sheet.

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Patent Abstracts of Japan, vol. 10, No. 270 (M-517), Sep. 13, 1986, & JP-A-61 092863 (Fujitsu LTD) May 10, 1986, *abstract.

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