Patent ID: 6674454
Filing Date: 2004-01-06
Classification: H04N

Abstract:
A color image forming apparatus, comprising:a transporting path, through which a recording medium is transported; a plurality of rotary image carriers, arranged in the transporting path; wherein at least one rotary polygon mirror, which rotates to reflect light so as to scan an outer peripheral surface of each of the image carriers in a first direction when each of the image carriers is rotated in a second direction perpendicular to the first direction, so that a monochrome latent image is formed on the outer peripheral surface of each of the image carriers to be developed and superimposedly transferred onto a transferred object to form a color image thereon, wherein the image carriers are arranged so as to satisfy the following expression: âˆ’Ts/21+t2âˆ’t3âˆ’nTp2 where Ts is a time period of scanning performed by each of reflecting surfaces of the polygon mirror; Tp is a time period of one rotation of the polygon mirror; t1 is a time period required for a first latent image formed on a first image carrier among the image carriers is developed and transferred to the transferred object at a first transferring position; t2 is a time period required for the first image is traveled from the first transferring position to a second transferring position at a downstream of the transporting path; t3 is a time period required for a second latent image formed on a second image carrier adjacent to the first image carrier is developed and transferred to the transferred object at the second transferring position; and n is a natural number.