US 6,817,707 B1
Pressure controlled ink jet printhead assemblyGeneral
US 6,817,707 B1
Pressure controlled ink jet printhead assembly
Tech Center:
2800 Semiconductors/Memory, Circuits/Measuring and Testing, Optics/Photocopying, Printing/Measuring and Testing
Examiner:
Stephen D. Meier
Art Unit:
2853 Printing/Measuring and Testing
Inventors:
Matthew J. Russell; Jon B. Whitney; John R. Fowler; Timothy L. Howard
Assignee:
Priority:
06/18/03
Filed:
06/18/03
Granted:
11/16/04
Expiration:
06/18/23
Abstract
An ink jet printhead assembly for a pressure controlled ink jet printhead. The assembly includes an ink reservoir made of a first material having a first melting point and having an open top cavity defined by sidewalls, a bottom wall and a peripheral edge. A pressure control structure made of a polymeric material having a second melting point lower than the first melting point is included. The pressure control structure has a first surface, a second surface opposite the first surface, a side surface, and an aperture therein. A sealing structure for forming a liquid tight seal is provided between the sidewalls of the ink reservoir and the side surface of the pressure control structure. A pressure regulating film is attached over the aperture to the first surface of the pressure control structure. A cover is attached to the ink reservoir.