发明名称 LED printhead with post lens optical feedback and method of controlling same
摘要 An LED printer apparatus or the like and method of controlling same is described wherein a sensor is provided at the focal plane of a lens means used to focus light from the LED's onto a film. This allows the sensor to provide corrections during actual printing operations. In response to the light sensed, adjustments are made by altering drive current to the LED's and/or changing the duration of an exposure period.
申请公布号 US4998118(A) 申请公布日期 1991.03.05
申请号 US19890375159 申请日期 1989.07.03
申请人 EASTMAN KODAK COMPANY 发明人 NG, YEE S.
分类号 G06K15/12 主分类号 G06K15/12
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