发明名称 |
Method for manufacturing Lithographic printing plates. |
摘要 |
<p>The method comprises developing a presensitized plate for use in making lithographic printing plates imagewise expopsed to light with an alkaline developer utilizing an automatic developing machine and then treating the developed presensitized plate with a finisher, wherein an initial pH of the finisher ranges from 2 to 8 and a pH of the finisher is controlled during running in proportion to concentration of the developer included in the finisher. A formula relating pH to concentration is disclosed. The method makes it possible to prevent the formation of gel-like insoluble matters in the bath for treatment with the finisher due to the presence of the developer carried over from a developing bath and to stably process a large amount of lithographic printing plates over a long time period.</p> |
申请公布号 |
EP0347246(A2) |
申请公布日期 |
1989.12.20 |
申请号 |
EP19890306132 |
申请日期 |
1989.06.16 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
TOYAMA, TADAO;MATSUMOTO, HIROSHI;KUNISHIKA, KENJI |
分类号 |
G03F7/40;G03F7/30;G03F7/32 |
主分类号 |
G03F7/40 |
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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