| 发明名称 |
Liquid crystalline platen for an electrophotographic printing machine |
| 摘要 |
An apparatus in which an original document is housed. The support on which the original document is positioned becomes selectively opaque so as to mask portions of the original document disposed thereon.
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| 申请公布号 |
US4012122(A) |
申请公布日期 |
1977.03.15 |
| 申请号 |
US19750572030 |
申请日期 |
1975.04.28 |
| 申请人 |
XEROX CORPORATION |
发明人 |
MCVEIGH, JAMES H. |
| 分类号 |
G02F1/13;G03G15/00;(IPC1-7):G02F1/13 |
主分类号 |
G02F1/13 |
| 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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