| 摘要 |
PURPOSE:To form the binding margin by the same quantity on the edge parts of the same sides of both front and back surfaces by delaying an exposing timing only for a specific time when one side where a variable power ratio is <= 1 is processed and only for a time corresponding to the width of the binding margin when the other surface is processed. CONSTITUTION:The variable power ratio A, the width of the binding margin B, the length of an original C, and the length of a transfer sheet D are inputted from an operating part before copying processing is carried out. When one side where the variable power ratio is <= 1 is processed, the exposing timing is delayed in delayed only for a time corresponding to F = D - A X C -B. At this time, the exposing timing is delayed by F when the image forming processing of one surface side is carried out, so that the bending margin is formed by the same quantity as the deviation B of the exposing timing when the other surface side is processed on the edge part of the same side of the transfer sheet. Thus, even if a variable power image formation, etc., are carried out, the binding margin is automatically formed by the same quantity on the edge parts of the same sides of both front and back surfaces. |
