Thin film resistor printhead architecture for thermal ink jet pe

Details Thin film resistor printhead architecture for thermal ink jet pe Thin film resistor printhead architecture for thermal ink jet pe

1994-03-02

1995-10-03

Hartary, Joseph W.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 205

Patent

active

054556139

ABSTRACT:
A thermal ink jet printhead including a thin film substrate with a plurality of polygon shaped thin film resistors, a barrier layer overlying the substrate, and respective firing chambers formed in the barrier layer for each of the resistors. Each firing chamber is formed of a continuously curved concave wall having ends adjacent the boundary of the resistor, and which is within the boundary of the area defined by the resistor and a 10 micrometer wide margin around the resistor.

REFERENCES:
patent: 4502060 (1985-02-01), Rankin et al.
patent: 4558333 (1985-12-01), Sugitani et al.
patent: 4611219 (1986-09-01), Sugitani
patent: 4694308 (1987-09-01), Chan et al.
patent: 4794410 (1988-12-01), Taub et al.
patent: 4870433 (1989-09-01), Campbell
patent: 4882595 (1989-11-01), Trueba et al.
patent: 4894664 (1990-01-01), Tsung Pan

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