Thermal ink jet print head method of manufacture

Details Thermal ink jet print head method of manufacture Thermal ink jet print head method of manufacture

1986-10-03

1987-07-21

Goldberg, E. A.

Metal working

Method of mechanical manufacture

Electrical device making

29157C, 29620, 29621, 1562722, 1562739, 346 75, 346140R, 427 49, 427 58, 427 88, 427402, 430311, G01D 1516, H05B 300, B05D 512, G03C 500

Patent

active

046808590

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: 4437103 (1984-03-01), Ikeda
patent: 4558333 (1985-12-01), Sugitani et al.

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