Optical registration system for label printer cutter attachment

Details Optical registration system for label printer cutter attachment Optical registration system for label printer cutter attachment

1997-04-28

1998-10-20

Bennett, Christopher A.

Typewriting machines

Sheet or web

Including programmed-control-system for record-medium feed

400711, 271227, 226 27, B41J 1144

Patent

active

058236929

ABSTRACT:
A detector assembly for detecting registration marks on a printed sheet when different color printing on different colored sheets is present has a pair of light sources and a light sensor. The light sources are of different colors selected to be complimentary such that one light source or the other will be capable of detecting a substantial range of contrasting registration marks placed on sheets that can be of various colors. Controls are used for selecting the light source that provides an output sensed by a light sensor when passing over the registration marks.

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Xerox Disclosure Journal, "Sensor Assemblies For Use In Feeding Clinched Computer Forms," vol. 17, No. 3, May/Jun. 1992.

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