公开(公告)号：US4104069A

公开(公告)日：1978-08-01

申请号：US699862

申请日：1976-06-25

申请人： Jacques Leon Vanheerentals ,  Josef Pfeifer ,  Helmut Klocke ,  Rudolf Paulus

发明人： Jacques Leon Vanheerentals ,  Josef Pfeifer ,  Helmut Klocke ,  Rudolf Paulus

IPC分类号： G03B27/73 ,  G03C7/16 ,  G03B27/74 ,  G03C7/00

CPC分类号： G03B27/73

摘要： A process of forming on a copying material from an original having respective minimum and maximum density values D.sub.min and D.sub.max a copy having respective minimum and maximum density values P and Q, different from D.sub.min and D.sub.max, comprising the steps of: forming first and second non-superimposed test wedge images by exposing first and second specimens of the copying material to light of respective first and second colors, the exposure of the first and second specimens being such that the respective average exposure times are T.sub.B and T.sub.G, with the exposure to light varying across each specimen according to a preselected relationship, determining from the first test wedge image the density values D.sub.1 and D.sub.3 which an original must have to produce upon the copying material the respective density values P and Q if the copying of such original onto the copying material is performed with light of the first color for an exposure time T.sub.B, determining from the second test wedge image the density values D.sub.2 and D.sub.4 which an original must have to produce upon the copying material the respective density values P and Q if the copying of such original onto the copying material is performed with light of the second color for an exposure time T.sub.G, determining from the values mentioned above the values t.sub.b and t.sub.g by solving at least one equation expressing the relationship between t.sub.b and t.sub.g and the values mentioned above, t.sub.b and t.sub.g being the respective exposure time intervals which must be employed for light of the first and second colors to form on the copying material from an original having the respective minimum and maximum density values D.sub.min and D.sub.max a copy having the respective minimum and maximum density values P and Q, and then forming such copy from such original.

摘要翻译： 从具有各自的最小和最大密度值Dmin和Dmax的具有各自的最小和最大密度值P和Q的复印件在复印材料上形成的过程不同于Dmin和Dmax，包括以下步骤：形成第一和第二非 - 通过将复印材料的第一和第二样品暴露于相应的第一和第二颜色的光，使第一和第二样品的曝光使得相应的平均曝光时间为TB和TG，曝光于光 根据预选的关系在每个样本上变化，从第一测试楔形图像确定原件必须在复印材料上必须产生的浓度值D1和D3，如果将这些原稿复制到复印件上，则相应的浓度值P和Q 用第一颜色的光进行曝光时间TB的材料，从第二测试楔形图像确定密度值 D2和D4，原件必须在复印材料上必须产生相应的浓度值P和Q，如果将这种原稿复制到复印材料上，则用第二种颜色的光进行曝光时间TG，从所提到的值确定 通过求解表达tb和tg之间的关系的至少一个方程式和上述值，tb和tg是值tb和tg之上，tb和tg是在第一和第二颜色的光上必须使用的相应的曝光时间间隔 从具有相应的最小和最大浓度值Dmin和Dmax的原件复制材料，具有具有各自的最小和最大密度值P和Q的复制品，然后从这样的原稿形成该复印件。