Patent ID: 8185027
Filing Date: 2012-05-22
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an image forming part that includes a plurality of image carriers; a setting mechanism that sets the image forming part in any one of a first mode in which rotation drive force is transmitted to the plurality of image carriers, and a second mode in which transmission of rotation drive force to any of the plurality of image carriers is stopped; a belt unit that is detachably provided to an apparatus body, and that includes a belt member arranged in contact with the plurality of image carriers, an arrangement mechanism arranging the belt member in any one of a first arrangement state of being separated from the any of the plurality of image carriers and a second arrangement state of being in contact with the any of the plurality of image carriers, and a receiving member receiving drive force to be used by the arrangement mechanism; and a transmission member that is coupled with the receiving member of the belt unit, and that transmits drive force to the receiving member, coupling of the receiving member and the transmission member being prevented in any one of cases where the image forming part is in the first mode and the belt member is in the first arrangement state, and where the image forming part is in the second mode and the belt member is in the second arrangement state, at the time of mounting the belt unit on the apparatus body.