Electrophotography – Control of electrophotography process – Of plural processes
Reexamination Certificate
2007-06-26
2007-06-26
Chen, Sophia S. (Department: 2852)
Electrophotography
Control of electrophotography process
Of plural processes
C347S116000, C399S301000
Reexamination Certificate
active
11128175
ABSTRACT:
A color test image of each color composed of a plurality of partial images arranged at predetermined intervals in the moving direction of a conveyance belt is formed, at a position on the conveyance belt separated from relative positions where the respective color images are formed by distances according to the respective colors. A detection sensor detects the position of each partial image, and the distance between corresponding partial images in the respective colors is calculated. The distance between the respective color test images by finding an average value of a plurality of partial image distances is calculated, and based on the calculated distance, an adjustment amount for adjusting a position of forming each color image on the medium is calculated so that the respective color images are superimposed on each other without causing color misregistration.
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Chen Sophia S.
Sharp Kabushiki Kaisha
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