发明名称 |
LIQUID CRYSTAL OPTICAL PRINTER |
摘要 |
PURPOSE:To provide an inexpensive printer with a higher speed and a high reliability by arranging a light source, a slit, a liquid crystal panel and an SELFOC lens on the straight light. CONSTITUTION:Light projected from a fluorescent tube (K) which is kept at a fixed temperature with a temperature controller (u) and a lamp heater (s) connected to a temperature sensor (t) while adjusted to a fixed brightness per unit area with a brightness sensor (q) enters a liquid crystal panel (a) passing a release port provided on a light shield plate (O). The panel (a) is filled with a nematic liquid crystal which is positive by a low frequency while negative by a high frequency depending on a cross frequency zero in the dielectric anisotropy between upper and lower substrates so arranged to intercept light with a polaroid element in adjusted direction of the polarization axis while the liquid crystal material is almost parallel to the substrates by horizontal orientation thereof is kept at a fixed temperature with a heater controller (g) connected to a heater sensor (h). Light only required for printing is passed by opening or closing a light valve section and projected on a photosensitive drum with an SELFOC lens (m). |
申请公布号 |
JPS58114978(A) |
申请公布日期 |
1983.07.08 |
申请号 |
JP19810213263 |
申请日期 |
1981.12.28 |
申请人 |
EPUSON KK;SUWA SEIKOSHA KK |
发明人 |
SHIRAISHI YOSHIAKI;AOKI KENJI |
分类号 |
B41J2/445;B41J2/465;G02F1/13;G02F1/133;G02F1/1335;G02F1/139;G06K15/12 |
主分类号 |
B41J2/445 |
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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