发明名称 Dot percentage measuring device
摘要 In printing with dots, a dot percentage is one of the important factors which determine the quality of a printed matter, and accordingly it is essential to control the dot percentage throughout the printing process from makeup to printing. In order to readily and quickly measure the dot percentage with high accuracy, a microscope section and a display section are formed as one unit, and a correction circuit for light transmittance is provided.
申请公布号 US4264210(A) 申请公布日期 1981.04.28
申请号 US19780941174 申请日期 1978.09.11
申请人 DAI NIPPON INSATSU KABUSHIKI KAISHA 发明人 MITSUHASHI, YUJI
分类号 B41F33/00;G01N21/59;G03F5/00;(IPC1-7):G01N21/01 主分类号 B41F33/00
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