发明名称 |
Raser output scanner color printer with improved start of scan detection and process registration |
摘要 |
A Raster Output Scanner (ROS) color printer is formed by providing several ROS imagers adjacent image exposure locations of a photoreceptor belt. Each ROS imager forms a separate color image in response to video input signals with each color image superimposed in registration over the previously formed images. Registration in the process direction is enabled by a quad cell photosensor whose output is continually compared to determine whether process registration deviations from a previously established position are necessary. Correction signals are generated in an iterative fashion until a preselected process registration position is re-established. The quad cell detector is also used for a second function; to produce the start and end of scan signals which enable image registration in the cross-process direction.
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申请公布号 |
US5319537(A) |
申请公布日期 |
1994.06.07 |
申请号 |
US19920988587 |
申请日期 |
1992.12.10 |
申请人 |
XEROX CORPORATION |
发明人 |
POWERS, EDWARD A.;OSSMAN, KENNETH R.;HUBBLE, III, FRED F.;MARTIN, JAMES P. |
分类号 |
G03G15/01;H04N1/047;H04N1/113;H04N1/12;H04N1/50;(IPC1-7):H04N1/21;B41J2/435 |
主分类号 |
G03G15/01 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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