Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2005-04-05
2005-04-05
Nguyen, Thinh (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
Reexamination Certificate
active
06874867
ABSTRACT:
A drop emission device includes a chamber having a nozzle orifice through which a drop of liquid can be emitted. A deformable electrode is associated with the chamber such that movement of the electrode in a first direction increases the chamber's volume and movement of the electrode in a second direction decreases the chamber's volume to emit a drop through the nozzle orifice. A fixed electrode opposes to the deformable electrode to define a second chamber there between such that control of relative voltage differences between the deformable and the fixed electrodes selectively moves the deformable electrode in the first or second directions. The variable volume is vented to a source of dielectric material through an opening in the fixed electrode. The ratio of the cross-sectional area of the opening to the perimeter of the opening is greater than 0.5 μm, and is preferably about 5 μm.
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Patent Abstracts of Japan entitled: Ink Jet Recording Head and its Production; Publication #—10086364; Publication Date—Jul. 4, 1998; Application #—08241644; Application Date—Dec. 9, 1996; Applicant: Ricoh Co Ltd; Inventor—Komai Hiromichi.
Patent Abstracts of Japan entitled: Ink Jet Head; Publication No.—11291485; Publication Date—Oct. 26, 1999; Application No.—10098811; Application Date—Oct. 4, 1998; Applicant: Minolta Co Ltd; Inventor: Asano Masami.
Anagnostopoulos Constantine N.
DeBar Michael J.
Delametter Christopher N.
Furlani Edward P.
Bocchetti Mark G.
Eastman Kodak Company
Huffman Julian D.
Nguyen Thinh
Sales Milton S.
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