Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1993-09-27
1995-09-12
Fuller, Benjamin R.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
B41J 234
Patent
active
054501083
ABSTRACT:
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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patent: 4678529 (1987-07-01), Drake et al.
patent: 4774530 (1988-09-01), Hawkins
patent: 5010355 (1991-04-01), Hawkins et al.
Atkinson Diane
Drake Donald J.
Fuller Benjamin R.
Lund Valerie Ann
Xerox Corporation
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