Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2011-03-22
2011-03-22
Feggins, K. (Department: 2861)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
Reexamination Certificate
active
07909439
ABSTRACT:
A liquid ejecting head includes: a flow passage forming substrate which is provided with a plurality of liquid passages each having a pressure generating chamber communicating with a nozzle opening for ejecting a liquid and a communication section communicating with the plurality of liquid passages; an elastic film which is formed on one surface of the flow passage forming substrate and has an opening in an area opposed to the communication section; a pressure generating unit which applies pressure to the inside of the pressure generating chambers; and a reservoir forming substrate which is adhered onto the surface of the flow passage forming substrate on a side of the pressure generating unit and is provided with a reservoir section communicating with the communication section to form a part of a reservoir. An intermediate layer patterned inward from the opening of the elastic film is formed in an area which is a periphery of the communication section on the elastic film and corresponds to the liquid passages, and the flow passage forming substrate and the reservoir forming substrate are adhered to each other through the intermediate layer. An end portion of the intermediate layer on a side of the opening of the elastic film is formed as a tapered portion of which a thickness is gradually smaller, and a cross-section shape in a direction which the thickness of the tapered portion is gradually smaller is a concavely curved plane.
REFERENCES:
patent: 6869170 (2005-03-01), Shimada et al.
patent: 7364273 (2008-04-01), Takahashi
patent: 2008/0252697 (2008-10-01), Kamei
patent: 2006-082529 (2006-03-01), None
Hirano Akemi
Matsuzawa Akira
Feggins K.
Kilpatrick Townsend & Stockton LLP
Seiko Epson Corporation
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