Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate
2006-01-03
2006-01-03
Purvis, Sue A. (Department: 1734)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
C156S235000, C156S241000, C156S272200, C427S146000, C347S040000, C347S056000, C430S270100, C430S311000, C430S312000
Reexamination Certificate
active
06982022
ABSTRACT:
Disclosed is a process for forming a novel ink jet printhead which comprises: (a) providing a lower substrate in which one surface thereof has an array of drop generating elements and addressing electrodes formed thereon; (b) depositing onto the release surface of an intermediate film support a photopatternable layer comprising a precursor polymer which is a phenolic novolac resin having glycidyl ether functional groups; (c) prebaking the photopatternable layer to dry, semi-solid condition; (d) laminating the dry, semi-solid layer to the surface of the lower substrate under heat and pressure and separating it from the release surface of the intermediate film support; (e) exposing the photopatternable layer to actinic radiation in an imagewise pattern corresponding to ink nozzles and developing to form a nozzle plate section, and (f) removing the precursor polymer from the unexposed areas, thereby forming ink nozzle recesses which are aligned to communicate with the drop generating elements and terminal ends of the electrodes of the lower substrate laminated thereto. Step (e) may be carried out either before or after step (d).
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Anonymous, IBM Technical Disclosure Bulletin, Nonmetallic Nozzle Plate Assembly for Thermal Ink Jet Printheads, vol. 34, Num. 7B, Dec. 1, 1991.
Clark Shan
Fisher Almon
Kneezel Gary
Narang Ram
Zhang Bidan
Perman & Green LLP
Purvis Sue A.
Xerox Corporation
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