Sheet feeder control

Abstract

Abstract A reproduction machine (5) with a paper path along which copy sheets are brought one by one into transfer relation with a photoreceptor (10) to receive a developed image. The copy sheets are supplied from either a main or auxiliary paper tray (75, 76) which feeds sheets at a predetermined clock count in synchronization with the operation of the machine. The copy sheet feeder is adjusted automatically to compensate for wear on the feeder parts. To this end the current clock count of a selected tray is determined and compared with a desired optimum clock count window stored in memory, with adjustment of the clock count made when the current clock count of the selected tray is outside the optimum clock count window to bring the paper tray timing within the window, but prevented where the current clock count is outside preset maximum and mimimum clock counts. If several clock counts outside those limits are obtained in succession operation of the machine is suspended and the fault may be displayed on a display panel.

Inventors

• 👤 William Dimitri Perun
• 👤 Bohdan John Sypniak
• 👤 Ronald Paul Booth, Sr.

Bibliographic Details