发明名称 |
Method for forming plate characters in a half-tone gravure platemaking process |
摘要 |
A method for forming plate characters in a half-tone gravure platemaking process in which a laser beam intermittently irradiates a photosensitive material, thus forming plate characters therein as a result of exposure by the laser beam. The outline portion of each character is made up of continuous groove-form cells and inner portion of the character (the filled portion) is made up of independent dot-form cells corresponding to the dot percentage of a shadow portion or with island-form projections to the extent that ink flow (running) does not occur when the cells are filled with ink as a result of the plate surface being wiped by a doctor blade. The outline portion of each character is made up of groove-form cells having a narrow width without causing ink flow (running) when the cells are filled with ink as a result of the plate surface being wiped by a doctor blade. |
申请公布号 |
US5019486(A) |
申请公布日期 |
1991.05.28 |
申请号 |
US19900477325 |
申请日期 |
1990.02.08 |
申请人 |
THINK LABORATORY CO., LTD. |
发明人 |
TAKAKURA, KOICHI |
分类号 |
B41B17/00;B41C1/05;G03F1/00;G03F5/20;G03F7/00;G03F7/20 |
主分类号 |
B41B17/00 |
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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