Image forming device capable of detecting existence of ink...

Details Image forming device capable of detecting existence of ink... Image forming device capable of detecting existence of ink...

2005-07-12

2005-07-12

Meier, Stephen (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

Reexamination Certificate

active

06916076

ABSTRACT:
In a calibration data input process, a carriage5is moved toward an ink sensor19to a prescribed position while the ink sensor19detecting levels of reflected light. Then the amount of reflected light is read for over a range wider than the width of the carriage5including a theoretical detecting position P2. An actual detecting position P1is found based on the level of reflected light. The difference between the theoretical detecting position P2and the actual detecting position P1is calculated and is stored as the calibration value α in a first calibration data memory M1. Accordingly, the actual detecting position P1is set as P2±α.The calibration value α is used in a calibration process to calibrate the detecting position, so that the level of reflected light can be detected with accuracy.

REFERENCES:
patent: 6137503 (2000-10-01), Hashimoto et al.
patent: 6454400 (2002-09-01), Morita et al.
patent: 6619776 (2003-09-01), Yoshiyama et al.
patent: A 9-240010 (1997-09-01), None
patent: A 11-277760 (1999-10-01), None

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