Apparatus for registering images in a xerographic system

Details Apparatus for registering images in a xerographic system Apparatus for registering images in a xerographic system

1993-09-29

1995-04-04

Beatty, Robert B.

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226 28, 250548, G03G 2100

Patent

active

054042020

ABSTRACT:
The present invention is directed to a precise method of registering images on a photoreceptor belt. At least one coded charge pattern is formed in the photoreceptor belt, outside the image area. A charge sensor is positioned above the belt and in the process direction alignment with the pattern. The sensor has an identical pattern formed on the sensing surface. As the coded pattern advances beneath the charge sensor, a correlation signal is generated when the two patterns are exactly aligned. This correlation signal is used to generate a precisely timed line sync signal which is reproducible through each of the imaging stations to produce registration of the first scan line of each image sequence with a very high degree of accuracy. When two coded patterns and two sensors are used, image skew correction signals are generated and used to correct for skew registration errors.

REFERENCES:
patent: 4808832 (1989-02-01), Doggett
patent: 5175570 (1992-12-01), Haneda et al.
patent: 5200285 (1993-04-01), Carrish
patent: 5208633 (1993-05-01), Genovese
patent: 5208796 (1993-05-01), Wong et al.
patent: 5214493 (1993-05-01), Sugiyama et al.
patent: 5216257 (1993-06-01), Brueck et al.
patent: 5216724 (1993-06-01), Suzuki et al.
patent: 5260725 (1993-11-01), Hammond
patent: 5278625 (1994-01-01), Charnitski et al.
patent: 5287162 (1994-02-01), de Jong et al.

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