Incremental printing of symbolic information – Ink jet – Fluid or fluid source handling means
Reexamination Certificate
2006-09-05
2006-09-05
Shah, Manish S. (Department: 2853)
Incremental printing of symbolic information
Ink jet
Fluid or fluid source handling means
C347S044000, C347S065000
Reexamination Certificate
active
07101030
ABSTRACT:
Disclosed is a process for forming a channel wafer for a novel ink jet printhead, having an ink particle-filter layer over the ink-inlet surface thereof. The process comprises the steps of applying a thin coating of a heat-curable, photopatternable polymer composition to an intermediate substrate having a release surface and drying the coating to form a semi-solid adhesive layer. The layer and supporting substrate are pressed against the ink-inlet surface of a channel wafer with an optional adhesive layer to bond the layer to the ink inlet surface. The substrate is separated to transfer the contacting area of the semi-solid layer to the ink-inlet surface as a laminate, and the semi-solid layer is exposed through a filter-forming mask and ink particle-filter openings are developed therethrough, either before or after transfer of the semi-solid adhesive layer from the intermediate substrate to the ink-inlet surface of the channel wafer, and the filter layer is cured.
REFERENCES:
patent: 5124717 (1992-06-01), Campanelli et al.
patent: 6139674 (2000-10-01), Markham et al.
patent: 6234623 (2001-05-01), Drake
patent: 6779877 (2004-08-01), Andrews
Clark Shan
Fisher Almon
Kneezel Gary
Narang Ram
Zhang Bidan
Perman & Green LLP
Shah Manish S.
Xerox Corporation
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