发明名称 |
Method and apparatus for scan line skew correction using a gradient index electrooptic prism |
摘要 |
An optical element for the selective scan line skew correction in a raster output scanner (ROS) of an electrostatographic printer. The optical element includes a chamber having a volume defined by parallel surfaces in substantially parallel planes containing a liquid crystal material having a variable index of refraction as a function of voltage applied thereacross. An inhomogenous electric field is generated through the liquid crystal material to produce a refractive index gradient along substantially perpendicular planes in the optical element. The ROS includes a control and feedback system coupled to a variable voltage source for applying a variable biasing voltage across the optical element to control the variable index of refraction of the liquid crystal material for selectively correcting scan line skew.
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申请公布号 |
US5493326(A) |
申请公布日期 |
1996.02.20 |
申请号 |
US19940178177 |
申请日期 |
1994.01.03 |
申请人 |
XEROX CORPORATION |
发明人 |
ANDREWS, JOHN R.;GENOVESE, FRANK C.;LANNOM, JAMES W. |
分类号 |
G02B26/12;G02B27/00;G02F1/13;G03B27/72;(IPC1-7):B41J2/47 |
主分类号 |
G02B26/12 |
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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