Ink jet printhead

Details Ink jet printhead Ink jet printhead

1990-12-24

1992-07-21

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

346 11, A41J 205

Patent

active

051327074

ABSTRACT:
A thermal ink jet printhead having an array of coplanar nozzles in a nozzle face that are entirely surrounded by an insulative polymeric material is disclosed, together with a method of fabrication thereof. The ink channels, nozzles, and reservoir are produced by sequentially depositing and patterning two layers of thick film material, such as Vacrel.RTM., on one substrate containing an array of heating elements and addressing electrodes, so that the heating elements are placed in a pit in the first thick film layer and the channels and reservoir recesses are produced in the overlaying second thick film layer. A second substrate having a third layer of the same thick layer and having a hole processed therethrough to serve as an ink inlet is aligned and bonded to the first substrate to form the printhead, with the second and third film layers bonded together in order to produce the nozzle which are surrounded by the thick film material.

REFERENCES:
patent: Re32572 (1988-01-01), Hawkins et al.
patent: 4394670 (1983-07-01), Sugitani
patent: 4567493 (1986-01-01), Ikeda et al.
patent: 4611219 (1986-09-01), Sugitani
patent: 4635077 (1987-01-01), Itoh
patent: 4638337 (1987-01-01), Torpey et al.
patent: 4774530 (1988-09-01), Hawkins
patent: 4786357 (1988-11-01), Campanelli et al.

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