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    • 3. 发明授权
    • Method of determining the optimum exposure conditions for a color printer
    • 确定彩色打印机的最佳曝光条件的方法
    • US4611918A
    • 1986-09-16
    • US590142
    • 1984-03-16
    • Shigeki NishidaHiroo Ikeura
    • Shigeki NishidaHiroo Ikeura
    • G03B27/73G01J3/51G03B27/80
    • G03B27/73
    • A new method of making it possible to quickly and easily determine the optimum exposure conditions for a photographic color printer is disclosed. The method is performed by way of the steps of preparing a plurality of test prints under different exposure condition using a standard negative film, measuring optical density for each of color components on the test prints, comparing their optical density with that of corresponding color component on a standard print, detecting change in optical density per unit positional change of correction key on each of the test prints with respect to each of color components, and determining corrective value required for correcting density difference between each of test prints and standard print with reference to the above change in optical density per unit positional change of correction key. The color printer includes four lines of exposure correction keys comprising density keys, yellow keys, magenta keys and cyan keys and an exposure condition for test prints is determined such that one of exposure condition correction keys selected from the four lines is a correction key ranked above or below normal keys and all other keys are normal keys.
    • 公开了一种使得可以快速和容易地确定照相彩色打印机的最佳曝光条件的新方法。 该方法通过以下步骤进行:使用标准负片在不同的曝光条件下制备多个测试印刷品,测量测试印刷品上每种颜色成分的光密度,将它们的光密度与相应颜色成分的光密度进行比较 标准打印,检测每个测试印刷品上每个颜色分量的校正键的单位位置变化的光密度的变化,并且确定校正印刷品和标准印刷品之间的浓度差所需的校正值,参考 上述每单位位置变化的光密度变化校正键。 彩色打印机包括四行曝光校正键,其包括浓度键,黄色键,品红色键和青色键,并且确定用于测试打印的曝光条件,使得从四行选择的曝光条件校正键中的一个是排列在上面的校正键 或低于普通键,所有其他键均为普通键。