Technique and device for controlling the position accuracy in color printing

Abstract

Controlling the position accuracy in color printing with an electrophotographic printing device in regard to the register, namely the position accuracy of a printed image on the print substrate, in particular on the printed sheet regarding an edge of the printed sheet and in regard to the gage-pin, namely the position accuracy of the color printouts of the color print in relation to each other. Register and gage-pin position accuracy are executed with one and the same sensor unit, having one light receiver (sensor), which receives light from at least one light emitter. In this way, both of the position accuracy can be checked economically while saving space and in extreme cases, be corrected, preferably using a control fitting.

Dependencies are inferred from the claim text.