Apparatus and methode for registering copy sheets in a...

Details Apparatus and methode for registering copy sheets in a... Apparatus and methode for registering copy sheets in a...

G - Physics

03

G

314/32

G03G 15/00 (2006.01)

Patent

CA 1193307

ABSTRACT In xerography, registration method and apparatus for a variable pitch copier. The invention has particular utility in achieving a speed and position match between a copy sheet and an image on a photoconductor as the copy sheet approaches an image transfer station. According to the invention the speed and position of both image and copy sheet are monitored and updated by a programmed microprocessor. Controlled accelerations and brakings of a copy sheet drive motor under microprocessor control first achieve registration and then maintain that registration as the image transfer occurs. The disclosed registration automatically adjusts for variable spacings between successive images about the periphery of the photoconductor to accommodate various image sizes.

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