Thermal ink-jet printhead with a suspended heating element in ea

Details Thermal ink-jet printhead with a suspended heating element in ea Thermal ink-jet printhead with a suspended heating element in ea

1996-03-04

1998-01-06

Hartary, Joseph W.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 18, B41J 205, B41J 29377

Patent

active

057060410

ABSTRACT:
In a thermal ink-jet printhead, a set of heating elements are formed in the main surface of a semiconductor chip. Channels are formed within the semiconductor chip underneath each of the heating elements, thereby exposing two main sides of each heating element within each ejector. Because two main surfaces of the heating element are accessible to liquid ink in each ejector, efficiency and thermal characteristics of the printhead are improved.

REFERENCES:
patent: 4532530 (1985-07-01), Hawkins
patent: 4894664 (1990-01-01), Pan
patent: 4980702 (1990-12-01), Kneezel
patent: 5017941 (1991-05-01), Drake
patent: 5216446 (1993-06-01), Satoi
"High-Level CAD Melds Micromachined Devices with Foundries" by Marshall, Parameswaran, Zaghlow, and Gaitan, IEEE Circuits and Devices, Nov. 1992, p. 10.

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