Ink jet print head

Details Ink jet print head Ink jet print head

1994-04-18

1997-09-09

Hartary, Joseph W.

Incremental printing of symbolic information

Ink jet

Controller

347 40, 347 59, 347 62, B41J 205, B41J 214

Patent

active

056661401

ABSTRACT:
An ink jet print head includes: a monolithic silicon substrate having a top surface; a plurality of chamber walls for defining a plurality of ink chambers on the top surface of the silicon substrate, the plurality of ink chambers being aligned in a first direction into a row extending along the top surface of the silicon substrate, each of the plurality of ink chambers being filled with ink, each chamber wall having a nozzle portion for defining a nozzle of a plurality of nozzles, each nozzle portion being formed so that each nozzle is in fluid communication with a respective ink chamber, the plurality of nozzles being aligned in the first direction into a row extending parallel to the top surface of the silicon substrate; an integrated circuit provided on the top surface of the silicon substrate and located adjacent to the plurality of ink chambers for outputting pulsed electric current; and a plurality of thermal resistors provided on the top surface of the silicon substrate each being located in a corresponding ink chamber of the plurality of ink chambers, each of the plurality of thermal resistors including a thin-film resistor. the thin-film resistor being made of a material selected from a group consisting of Ta--Si--SiO alloy and Cr--Si--SiO alloy, the thin-film conductor being made of a material selected from a group consisting of tungsten and nickel.

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Nikkei Mechanical, Dec. 28, 1972, pp. 58-63.
J. Baker et al., "Design and Development of a Color Thermal Inkjet Print Cartridge," Hewlett-Packard Journal, Aug. 1988.

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