发明名称 |
Method of and apparatus for producing halftone dot film of gradated density distribution |
摘要 |
In an electronic image reproduction system, a halftone dot film of a density distribution of a specific pattern is produced by obtaining a value l expressed by an equation l=f(x)+g(y) representative of the specific pattern corresponding to the density value. By superimposing a density signal corresponding to the value l on an image signal developed by scanning an original, a reproduction image of the original, modulated by the density signal of a specific pattern, is obtained.
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申请公布号 |
US4635131(A) |
申请公布日期 |
1987.01.06 |
申请号 |
US19850785711 |
申请日期 |
1985.10.09 |
申请人 |
SCANNER CO D S;DAINIPPON SCREEN MFG |
发明人 |
TERADA, SHINICHI;MASUDA, KOZO;ADACHI, YOSHIMITSU |
分类号 |
G03F3/08;G03F5/00;G03G5/00;G06T11/00;H04N1/40;H04N1/405;H04N1/52;(IPC1-7):H04N1/21 |
主分类号 |
G03F3/08 |
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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