Patent ID: 8725030
Filing Date: 2014-05-13
Classification: G03G

Abstract:
1. An image forming apparatus, comprising: an image forming unit, which includes a photosensitive member and is configured to form a developer image in a developer agent on the photosensitive member; an intermediate transfer member, which is arranged in a position to face the photosensitive member; a primary transfer member, which is configured to transfer the developer image from the photosensitive member to the intermediate transfer member; a secondary transfer member, which is configured to transfer the developer image from the intermediate transfer member to a recording medium; a cleaning member, which is configured to remove materials adhered onto the intermediate transfer member; a container, which is configured to store the materials removed from the intermediate transfer member; an attachment section, to which the container is detachably attached; a conveyer, which is configured to convey the recording medium to pass through a position between the intermediate transfer member and the cleaning member; wherein the secondary transfer member is functional as the cleaning member; a controller, which is configured to control a difference between a moving velocity of the intermediate transfer member and a moving velocity of the secondary transfer member, wherein the secondary transfer member is configured to transfer the developer image from the intermediate transfer member to the recording medium during a secondary-transfer operation period and serve as the cleaning member during a cleaning operation period, in which the materials is removed from the intermediate transfer member by the secondary transfer member serving as the cleaning member; wherein the controller controls the difference between the moving velocity of the intermediate transfer member and the moving velocity of the secondary transfer member at a secondary transfer position, in which the developer image is transferred to the recording medium, to be a first difference during the secondary-transfer operation period; wherein the controller controls the difference between the moving velocity of the intermediate transfer member and the moving velocity of the secondary transfer member at the secondary transfer position to be a second difference during the cleaning operation period; and wherein the second difference is greater than the first difference.