Fitzpatrick, Cella, Harper & Scinto
Image forming apparatus that sets speeds of driving sources
An image forming apparatus includes an image bearing member, a toner image forming unit, an intermediary transfer member, a first driving source, a second driving portion, a speed instruction value changing portion, an executing portion for executing an operation in a detecting mode in a first detection period in a first state and in a second detection period in a second state larger in frictional force than in the first state, and a setting portion. In each of the first and second detection periods, the speed instruction value of the second driving source is set at a fixed value and the speed instruction value of the first driving source is successively changed to different values, and the setting portion sets the speed instruction value of the first driving source used during the image formation on the basis of a detection result in the detecting mode.
Canon Kabushiki Kaisha
G G
G03G G03G
inventional inventional
Takuya Koichi Tadashi
Matsumura Taniguchi Iwakawa