Thermal ink jet printhead with pentagonal ejector channels

Details Thermal ink jet printhead with pentagonal ejector channels Thermal ink jet printhead with pentagonal ejector channels

1997-03-03

1999-02-02

Hartary, Joseph

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 205

Patent

active

058671927

ABSTRACT:
In an ink-jet printhead, channels in which liquid ink is nucleated by a heating element defines five sides in cross-section. One of the sides is created by the main surface of a heater chip which includes the heating element, while the other four sides, forming a truncated parallelogram or diamond-shape, are defined in a channel plate abutting the heater chip. The four-sided channel in the channel plate is created by a combined process of plasma etching and wet etching.

REFERENCES:
patent: 4216477 (1980-08-01), Matsuda
patent: 4376945 (1983-03-01), Hara
patent: 5508725 (1996-04-01), Goto
patent: 5665249 (1997-09-01), Burke et al.
Alavi et al., "Laser Machining of Silicon for Fabrication of New Microstructures," 1991 IEEE.

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