System for an electrothermal ink jet print head

Details System for an electrothermal ink jet print head System for an electrothermal ink jet print head

1993-04-28

1996-03-26

Hartary, Joseph W.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 94, B41J 205

Patent

active

055024718

ABSTRACT:
An electrothermal ink jet print head is constructed in layer structure, wherein the expansion direction of the ink vapor bubble is directed opposite to the ink-ejection direction. Each ink channel (16) of the ink jet print head is supplied with ink by flow throttles for a highest degree of effectiveness. For this purpose, a cover plate (1) is furnished with openings (2). The openings (2) join into an ink storage container. The openings (2) are connected with recess openings (25) to the ink channel (16) in the chip (11). Selectively, the recess openings (25) can be furnished in the chip (11) or in the cover plate (1). A method is provided for producing the recess openings (25).

REFERENCES:
patent: 4158847 (1979-06-01), Heinzl
patent: 4680595 (1987-07-01), Cruz-Uribe
patent: 4847630 (1989-07-01), Bhaskar
patent: 4929969 (1990-05-01), Morris
patent: 4980703 (1990-12-01), Sakurai
patent: 5016024 (1991-05-01), Lam
patent: 5211806 (1993-05-01), Wong

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