发明名称 |
POSITIVE-WORKING PHOTOSENSITIVE LITHOGRAPHIC PRINTING PLATE AND METHOD FOR PRODUCING THE SAME |
摘要 |
A positive photosensitive printing plate is prepared wherein the photosensitivy is to near-infrared rays which do not induce a chemical change in a photosensitive component. The photosensitive material has an inclined structure from the viewpoint of dissolution of the irradiated portion in an alkali developer. The dissolution rate is such that it continuously increases from the upper, surface part of the photosensitive material to the lower part of the photosensitive material. This effect may be enhanced by diffusion of a material, preferably a polar compound, such as H2O, from the surface toward the inner lower part of the photosensitive material. Techniques for accomplishing the diffusion include contacting the surface of the photosensitive material with an atmosphere of high humidity or overlaying the photosensitive material with a layer of protective material (paper) containing moisture and heating the resultant composite. The photosensitive material may include a solubility suppressing agent such as a sulfonic acid ester or a compound having a triarylmethane skeleton.
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申请公布号 |
WO0029214(A1) |
申请公布日期 |
2000.05.25 |
申请号 |
WO1999JP06343 |
申请日期 |
1999.11.12 |
申请人 |
MITSUBISHI CHEMICAL CORPORATION |
发明人 |
HIDAKA, KATSUHIKO;YAGISAWA, HIROYUKI;AKAMATSU, MASAO;TSUCHIYA, TATSUNORI |
分类号 |
G03F7/004;B41C1/10;B41M5/36;B41N1/14;G03F7/00;G03F7/039;G03F7/32;G03F7/38;(IPC1-7):B41C1/10 |
主分类号 |
G03F7/004 |
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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