IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND IMAGE FORMING PROGRAM

PROBLEM TO BE SOLVED: To precisely perform color matching by securely and promptly detecting and adjusting a difference of velocities of plural belts used for image formation. SOLUTION: An image forming apparatus has the transferring belt where a color image is formed, and the conveyance belt configured to transfer a recording medium where a monochrome image is transferred. The apparatus includes: a velocity difference detecting means for detecting a velocity difference between the transferring belt and the conveyance belt; a determining means for determining whether the velocity difference detected by the velocity difference detecting means is equal to or greater than a designated value; a velocity adjusting means for adjusting the velocity difference so that the velocity difference becomes lower than the designated value in a case where the velocity difference is determined to be the designated value or more by the determining means; and a color correcting means for correcting a shift of colors between the color image and the monochrome image by using the transferring belt and the conveyance belt whose velocities are adjusted by the velocity adjusting means. COPYRIGHT: (C)2011,JPO&INPIT