Method of calculating threshold value, and liquid ejecting...

Details Method of calculating threshold value, and liquid ejecting... Method of calculating threshold value, and liquid ejecting...

2007-04-03

2010-02-02

Huffman, Julian D (Department: 2853)

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C250S559400

Reexamination Certificate

active

07654631

ABSTRACT:
In order to calculate a threshold value for a detection signal output from an optical sensor in accordance with a state of a target object in a liquid ejecting apparatus, the optical sensor includes a light emitting element operable to irradiate the detected object and a light receiving element operable to detect a light amount which varies in accordance with the state of the target object. The detection signal is output from the optical sensor, based on the detected light amount. A level of the detection signal is adjusted so as to fall within a prescribed range. The threshold value is calculated based on the adjusted level of the detection signal.

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patent: 2003-260829 (2003-09-01), None
patent: 2004-182361 (2004-07-01), None
patent: 2005-081750 (2005-03-01), None

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