Ink jet printhead

Details Ink jet printhead Ink jet printhead

2005-03-01

2005-03-01

Nguyen, Lamson (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S040000, C347S058000

Reexamination Certificate

active

06860587

ABSTRACT:
An ink jet printhead includes a printhead substrate having a plurality of thin film layers and three side by side columnar arrays of drop generators formed in the printhead substrate and extending along a longitudinal extent. Each columnar array has ink drop generators that are separated by an ink drop generator pitch P. The ink drop generators produce ink drops having an ink drop volume that enables multi-pass printing of a resolution that is not less than 1/(2P) dpi along a print axis parallel to the longitudinal extent. Three columnar arrays of FET drive circuits formed in the printhead substrate are employed to energize corresponding columnar arrays of ink drop generators.

REFERENCES:
patent: 5683188 (1997-11-01), Miyazaki et al.
patent: 5683489 (1997-11-01), Hayashi et al.
patent: 5713673 (1998-02-01), Nemoto et al.
patent: 5757400 (1998-05-01), Hoisington
patent: 6325489 (2001-12-01), Endo
patent: 6478404 (2002-11-01), Torgerson et al.
patent: 0679518 (1995-03-01), None
patent: 955166 (1998-12-01), None
International Search Report mailed Dec. 6, 2001 re Application No. PCT/US 01/27654.

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