Semiconductor device manufacturing: process – Manufacture of electrical device controlled printhead
Patent
1994-07-08
1997-04-22
Niebling, John
Semiconductor device manufacturing: process
Manufacture of electrical device controlled printhead
347 68, 347 72, 347 14, 347 17, 347 18, 347 23, 438 55, H01L 3528, H01L 2168, B41J 2175
Patent
active
056228970
ABSTRACT:
A process for manufacturing a drop-on-demand ink jet printhead having thermoelectric temperature control apparatus incorporated therewith for the selective heating or cooling thereof and a method of manufacturing the same. The ink jet printhead includes a channel array constructed of a thermally conductive material, a spaced series of internal ink-carrying channels which extend rearwardly from a front side surface and a piezoelectric actuator acoustically coupled to each of the ink-carrying channels for selectively imparting pressure pulses thereto. N-type and p-type thermoelectric carriers are mounted to a top side surface of the channel array and then serially connected to a temperature controller. By applying electrical power to the n-type and p-type thermoelectric carriers, heat will be transferred between the channel array and a cover plate mounted to top side surfaces of the n-type and p-type thermoelectric carriers. In this manner, the channel array may be selectively heated or cooled.
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Compaq Computer Corporation
Graybill David E.
Niebling John
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