Color image forming apparatus
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorRyoichi Hata
Life of this patent
Estimating the term…
Abstract
Registration patterns are formed plural times at arbitrary positions in the period determined by the conveying drawing fluctuation period detector when forming registration patterns. The average of the color deviation amount obtained from these plural registration patterns is the color deviation amount. As a result, the color deviation amount can be detected accurately. By detecting the accurate color deviation amount, the precision of color deviation correction is enhanced. It hence presents a color image forming apparatus capable of obtaining images of high print quality.
Claims10
A color image forming apparatus comprising:
- a) an image conveying unit for conveying an image by holding it on the surface,
- b) a plurality of image forming units disposed for each color for forming the image corresponding to each color image information on said image conveying unit,
- c) a conveying drawing fluctuation period detector for detecting period of drawing fluctuation in said image conveying unit,
- d) a registration pattern generator for controlling formation of registration pattern of each color on said image conveying unit by said image forming units at the time of detection operation of color deviation, and
- e) a color deviation detector for detecting color deviation of the image from said registration pattern.
Dependencies are inferred from the claim text.