发明授权
US5724088A High-speed, reflex-controlled laser circuit for an electrophotographic
printer
失效
用于电子照相打印机的高速反射控制激光电路
- 专利标题： High-speed, reflex-controlled laser circuit for an electrophotographic printer
- 专利标题（中）： 用于电子照相打印机的高速反射控制激光电路
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申请号： US623242申请日： 1996-03-27
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公开(公告)号： US5724088A公开(公告)日： 1998-03-03
- 发明人: Frank C. Genovese
- 申请人： Frank C. Genovese
- 申请人地址： CT Stamford
- 专利权人： Xerox Corporation
- 当前专利权人： Xerox Corporation
- 当前专利权人地址： CT Stamford
- 主分类号： G06K15/12
- IPC分类号： G06K15/12 ; B41J2/47
摘要：
A control system for the laser diode of a raster output scanner, such as used in a laser printer, uses reflex exposure control and a high-speed drive circuit. With the creation of each pixel on the photoreceptor, a sensor receiving some of the light flux from the diode accumulates charge on a capacitor, and when the charge on the capacitor exceeds a predetermined amount, a reflex circuit acts to shut the laser diode off. The laser diode is modulated via a high-speed trigger circuit wherein the diode is maintained just below its lasing voltage.
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