Patent ID: 8590891
Filing Date: 2013-11-26
Classification: B65H,G03G

Abstract:
1. An image forming apparatus, comprising: an image moving unit configured to move an image to a transfer position; a first recording medium conveyance unit configured to convey a recording medium to a downstream side in a conveying direction; a second recording medium conveyance unit provided on the downstream side of the first recording medium conveyance unit in the conveying direction, the second recording medium conveyance unit being configured to convey the recording medium, conveyed from the first recording medium conveyance unit, toward the transfer position; a recording medium detection unit configured to detect a position of the recording medium conveyed by the second recording medium conveyance unit; a position error detection unit configured to detect a position error between the transfer position and a position at which there is to be the recording medium when the image reaches the transfer position, based on the position of the recording medium detected by the recording medium detection unit; a position error storage unit configured to store a plurality of position errors detected by the position error detection unit; a steady-state position error calculation unit configured to calculate a steadily generated steady-state position error from the plurality of position errors stored in the position error storage unit; a first control unit configured to control a conveyance speed of the first recording medium conveyance unit so as to reduce the steady-state position error; and a second control unit configured to control a conveyance speed of the second recording medium conveyance unit so as to reduce the position error detected by the position error detection unit, with the steady-state position error being reduced by the first control unit.