Line-jump copying apparatus in electrophotography

Abstract

Abstract PURPOSE: To copy only the required parts of originals continuously by controlling stopping of the charging device of a photosensitive drum, stopping of conveying of transfer paper and transfer device, etc. by way of switches which detect the specified width portions of the original in its scanning movement direction. CONSTITUTION: When a changeover switch SW 1 is connected to the relay RY 1 side, contacts 1a 1 , 1a 2 close and the rotation of the pnotosensitive drum and the scanning movement of an original platen 9 are started. This causes the switch SW 2 out of the switches SW 2 thru SW 7 for detecting the specified width portions in the original scanning movement direction to close to set the relay RY 3 and open its contact 3b 1 , whereby the current supply to a charging charger 3 is cut off. At the same time, the solenoid is energized by way of a timer T through closing of the contact 3a 1 , whereby the set state of the relay RY 3 is continued and during this period no latent images are formed to the photosensitive drum. COPYRIGHT: (C)1980,JPO&Japio

Inventors

• 👤 Katsutaka Kimura

Bibliographic Details