Copying device

Abstract

Abstract PURPOSE:To eliminate a copying loss and to shorten the copying time of a both side original by discriminating whether or not the original is a blank paper original and controlling to convey and discharge the copying process and the copying paper. CONSTITUTION:The density of an original 19 of an automatic original conveying device 300 is detected by the photodetecting element as the density detecting means, compared with the density of the blank original stored at the memory device in the control device, the original is discriminated to be the blank paper original, and then, the copying process including the exposure through the control device is not executed. Simultaneously, the control device controls to supply the copying paper, when the first surface of the original is the blank, the copying paper is conveyed to a paper resuplying tray 26, and when the second surface of the original is the blank, the copying paper is discharged. By such constitution, the copying loss is eliminated and the copying time of the both side original can be shortened.

Inventors

• 👤 Masazumi Ito
• 👤 正澄 伊藤

Bibliographic Details