Patent ID: 6626101
Filing Date: 2003-09-30
Classification: G03G,H04N

Abstract:
A color-image forming apparatus comprising:a) a plurality of image-forming stations, each of said image-forming stations including a photosensitive body for carrying a latent image thereon and including a developing unit for developing the latent image into a visible toner image, each of said image-forming stations being operable to form a corresponding-color toner image; b) an exposure unit for providing said photosensitive body of each of said image-forming stations with light radiation to form the latent image thereon; c) an inter-stage transfer belt on which the toner image formed by each of said image-forming stations is to be transferred one after another so as to obtain an overlapped toner image; d) a pattern detector for detecting a displacement in the transferred toner images on said transfer belt based on a registration reference pattern, the reference pattern being formed by each of said image-forming stations and then transferred one after another onto said transfer belt; and e) a displacement corrector for controlling an interval of image-forming data signals sent from an image processor to said exposure unit according to the displacement detected by said pattern detector, said displacement corrector being operable to control the interval of the image-forming data signals on a dot-by-dot basis with respect to a resolution of said color-image forming apparatus.