发明授权
US5450108A Ink jet printhead which avoids effects of unwanted formations developed during fabrication 失效
喷墨打印头避免了在制造过程中产生的不希望的结构的影响

Ink jet printhead which avoids effects of unwanted formations developed
during fabrication
摘要:
An improved thermal ink jet printhead is formed by the alignment and bonding of an anisotropically etched silicon wafer channel plate, containing a plurality of channel grooves, to a silicon wafer heater plate, containing a plurality of heating and addressing elements which are covered by a patterned thin and thick film insulating layer. The printhead enables better bonding of the two plates by sequentially patterning each layer of a two layer thick film layer to compensate for topographical features formed in the last thick film layer. The relative thickness and geometrical shapes of the recesses in the two layers are selected, so that topographic formations are varied to prevent standoff between bonded heater and channel plates, thereby insuring that the adhesive applied between the bonded plates will have the greatest propensity to bond.
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