Ink jet printing apparatus and ink jet printing method

Details Ink jet printing apparatus and ink jet printing method Ink jet printing apparatus and ink jet printing method

2006-05-16

2006-05-16

Meier, Stephen (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

C400S055000, C400S056000

Reexamination Certificate

active

07044570

ABSTRACT:
The present invention provides an ink jet printing apparatus of a low-cost and simple construction which can detect with high reliability a gap between a print medium and a print head mounted on a carriage. The ink jet printing apparatus, which reciprocally moves in a predetermined scan direction the carriage holding the print head for ejecting ink onto the print medium, includes a gap changing mechanism for changing the gap between the print head held in the carriage and the print medium and a control unit for controlling a driving of the gap changing mechanism and a reciprocal movement of the carriage, wherein the control unit drives the gap changing mechanism and reciprocally moves the carriage to check the operation state of the gap changing mechanism.

REFERENCES:
patent: 6318836 (2001-11-01), Hasegawa et al.
patent: 6419409 (2002-07-01), Ueda et al.
patent: 2002/0057301 (2002-05-01), Ikeda
patent: 2002-137487 (2002-05-01), None

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