Recorders – Thermal recording
Patent
1991-05-22
1992-06-02
Fuller, Benjamin R.
Recorders
Thermal recording
B41J 2335, G01D 1510, G01D 1516
Patent
active
051191113
ABSTRACT:
An edge-type printhead and method of fabricating the same, eliminates the need for precision grinding, lapping, and polishing of a substrate, avoids the need for precision etching of electrode patterns, avoids the use of highly refined etchable thick film pastes, and avoids the need for precision glaze application in the construction thereof. Contact pads are provided on the printhead writing surface. The contact pads facilitate accurately and inexpensively delineated resistor lengths, provide resistor current spreading for full dot width printing and control resistor row straightness. Contact pads permit the use of standard wet or chemical etching with wide spacing between electrodes while facilitating full width printed dots with narrow spacing. The contact pads are applied to the writing edge after the edge-type substrate is laminated, sectioned and the writing surface is polished.
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Thomas Lowell E.
Volpe, Jr. Luke R.
Dynamics Research Corporation
Fuller Benjamin R.
Tran Huan
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