Patent ID: 9170542
Filing Date: 2015-10-27
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an image bearing member; an image forming unit configured to form a toner image on said image bearing member; an intermediate transfer member onto which the toner image formed on said image bearing member by said image forming unit is transferred; a driving unit configured to drive said intermediate transfer member to convey the toner image transferred onto said intermediate transfer member; a transfer unit configured to transfer the toner image on said intermediate transfer member, which has been conveyed to a transfer position by said driving unit, onto a sheet; a conveying unit configured to convey the sheet to the transfer position; a first detection unit configured to detect an image indicating a position of the toner image on said intermediate transfer member; a second detection unit configured to detect that the sheet conveyed by said conveying unit has reached a detection position upstream of the transfer position in a direction in which the sheet is conveyed by said conveying unit; and a control unit configured to control a conveying speed of said intermediate transfer member, based on timing of detection by said first detection unit and timing of detection by said second detection unit, such that the toner image on said intermediate transfer member is transferred by said transfer unit onto a predetermined position on the sheet conveyed by said conveying unit, wherein said control unit controls, based on the timing of detection by said first detection unit and the timing of detection by said second detection unit, the conveying speed of said intermediate transfer member during a time period from a time point when the image is detected by said first detection unit to a time point when the sheet conveyed by said conveying unit reaches the transfer position.