发明名称 |
SUPPORTING BODY FOR LITHOGRAPHY BLOCK AND ORIGINAL LITHOGRAPHY BLOCK |
摘要 |
<p>Objects of the present invention are to provide a positive working presensitized plate of a thermal type, which has damage resistance, and which is handled easily in conventional operation, high in sensitivity and excellent in press life when used as a lithographic printing plate, and to provide a support for a lithographic printing plate, which is suitably used for the same. The objects have been achieved by a support for a lithographic printing plate obtained by performing graining treatment, alkali etching treatment and anodizing treatment on an aluminum plate, wherein a ratio of a real area of a surface thereof to an apparent area of the surface set larger by 1.3 to 1.8 times, comprising a pit having an average diameter of 0.3 to 1.0 mu m and a micro grained structure inside on the surface, wherein a ratio of an apparent area of the pits to the apparent area of the surface is 90 % or more; and a presensitized plate comprising the support for a lithographic printing plate and a photosensitive layer that can become alkali-soluble by heating provided on the support. <IMAGE></p> |
申请公布号 |
EP1270258(A1) |
申请公布日期 |
2003.01.02 |
申请号 |
EP20010976845 |
申请日期 |
2001.10.26 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
ENDO, TADASHI;HOTTA, HISASHI;TERAOKA, KATSUYUKI;MIWA, HIDEKI;YASUTAKE, TERUYOSHI |
分类号 |
B41N1/08;B41C1/10;B41N1/20;B41N3/03;C23C22/56;C23C22/66;C25D11/04;(IPC1-7):B41N1/08 |
主分类号 |
B41N1/08 |
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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