Thermal ink jet common-slotted ink feed printhead

Details Thermal ink jet common-slotted ink feed printhead Thermal ink jet common-slotted ink feed printhead

1986-12-04

1987-07-28

Goldberg, E. A.

Recorders

Markers and/or driving means therefor

With ink supply to marker

346 75, 219216, G01D 1518, H05B 300

Patent

active

046834818

ABSTRACT:
In a thin film resistor substrate for a thermal ink jet printhead, there is provided an elongated ink feed slot for supplying ink to a plurality of heater resistors on the substrate. Ink flows from this slot vertically through the substrate and then laterally along predetermined ink flow paths in an orifice plate and barrier layer members to ink reservoirs above the heater resistors. In this manner ink flow pressure drops to all of the reservoirs are equal and thereby enhance ink pressure control for all of the reservoirs.

REFERENCES:
patent: 4188635 (1980-02-01), Giordano et al.
patent: 4271416 (1981-06-01), Shimizu et al.
patent: 4376284 (1983-03-01), Bader et al.
patent: 4500895 (1985-02-01), Buck et al.

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