发明名称
摘要 A step tablet in which density steps of a definite shape, each density step having a specific optical density, form a series of decreasing or increasing densities, in which any two density steps contiguous to each other are disposed with a boundary space of a specific shape between the density steps.
申请公布号 JPS6024461(B2) 申请公布日期 1985.06.13
申请号 JP19760140963 申请日期 1976.11.22
申请人 FUJI PHOTO FILM CO LTD 发明人 UCHIDA TOSHIO;YABUTA YORIMICHI;NOGUCHI HIROSHI;HASEGAWA EIICHI;IKEDA TETSUPEI
分类号 G03B27/80;G03C5/02;G03C5/08;G03F7/20 主分类号 G03B27/80
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