Thermal, drop-on-demand, ink jet print cartridge

Details Thermal, drop-on-demand, ink jet print cartridge Thermal, drop-on-demand, ink jet print cartridge

1988-05-17

1989-09-12

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

G01D 1516, B41J 304

Patent

active

048664618

ABSTRACT:
A thermal drop-on-demand print cartridge includes a base member, with an ink ingress opening and a heater slit, and a cover member that is mounted on the base member to define an ink supply channel from the ingress opening to the heater slit and an orifice array aligned with the heater slit. An ink reservoir is coupled to the base member for providing ink into the ingress opening and a heater and an electrode chip is mounted in the heater slit. The heater/electrode chip has a plurality of planar resistor elements formed on the chip edge that extends through the heater slit and electrodes are formed on chip sides that extend normally away from the resistor elements.

REFERENCES:
patent: 3478191 (1969-11-01), Johnson
patent: 4345262 (1982-08-01), Shirato
patent: 4399348 (1983-08-01), Bakewell
patent: 4500895 (1985-02-01), Buck
patent: 4712172 (1987-12-01), Kiyohara
patent: 4734717 (1988-03-01), Rayfield

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