Ink jet type recording head having head units with angled walls

Details Ink jet type recording head having head units with angled walls Ink jet type recording head having head units with angled walls

1996-11-12

1998-08-04

Lee, S.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 2045

Patent

active

057901554

ABSTRACT:
An ink jet type recording head composed of a plurality of head units and having a large number of nozzles without greatly increasing the width of the recording head. Outer walls 1a, 1b of a spacer 1 of the heat unit are inclined at an angle .theta. with respect to the arrangement lines A--A, B--B of pressure generating chambers 2, 3. A plurality of head units (e.g., 40, 41) are arranged so that end surfaces of the head units in the arrangement direction of the pressure generating chambers 2, 3 are adjacent to each other. The head units are fixed to a base board 28 such that they are shifted in a direction roughly perpendicular to the arrangement direction of then pressure generating chambers 2, 3 and so that an interval between the pressure generating chambers 2, 3 of the adjacent head units is the same as the pitch between the pressure generating chambers 2, 3 on each individual head unit. Accordingly, it is possible to arrange the nozzle openings of the plurality of head units at a uniform pitch even over several head units and nonetheless maintain the width of the entire recording head as narrow as possible.

REFERENCES:
patent: 4835554 (1989-05-01), Hoisington et al.
patent: 4891654 (1990-01-01), Hoisington et al.
patent: 5157420 (1992-10-01), Naka et al.
patent: 5353050 (1994-10-01), Kagayama
Patent Abstracts of Japan vol. 013, No. 365 (M-859), Aug. 15, 1989, & JP 01 122441 A (Fuji Electic Co Ltd), May 15, 1989 *Abstract.

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