Printing apparatus and driver IC having a dummy drive circuit

Details Printing apparatus and driver IC having a dummy drive circuit Printing apparatus and driver IC having a dummy drive circuit

2007-06-26

2010-11-30

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

C347S009000, C347S068000

Reexamination Certificate

active

07841685

ABSTRACT:
A printing apparatus includes a recording head, a driver IC, a dummy signal detection circuit, and a drive signal control circuit. The recording head has a recording element which performs recording on a recording medium. The driver IC has a drive circuit which applies a drive signal to the recording element, and a dummy drive circuit which outputs a dummy signal having a value associated with the drive signal. The dummy signal detection circuit detects the dummy signal. The drive signal control circuit controls the drive signal based on a value of the dummy signal detected by the dummy signal detection circuit.

REFERENCES:
patent: 5633671 (1997-05-01), Watanabe
patent: 6382756 (2002-05-01), Komuro
patent: 6523922 (2003-02-01), Hirayama
patent: 6582045 (2003-06-01), Hirayama
patent: 7175248 (2007-02-01), Wade
patent: 2001/0033305 (2001-10-01), Tamura
patent: H02-212164 (1990-08-01), None
patent: H03-208654 (1991-09-01), None
patent: H10-95116 (1998-04-01), None
patent: 2000280467 (2000-10-01), None
patent: 2001277516 (2001-10-01), None
patent: 2002059543 (2002-02-01), None
patent: 2002205395 (2002-07-01), None
patent: 2004237523 (2004-08-01), None
English machine translation of JP 2002059543 A to Tamura, translation performed on Nov. 5, 2009 via http://www.ipdl.inpit.go.jp/homepg—e.ipdl.
Machine translation of the written description of Japanese patent document 2002-205395, acquired via http://www.ipdl.inpit.go.jp/homepg—e.ipdl on Mar. 31, 2010.
Chinese Office Action issued in corresponding Chinese Application No. 2006-176415, dated Apr. 22, 2008.

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