Patent ID: 9624054
Date: 2017-04-18
CPC Classifications: B65H

Claim:
1. An image forming apparatus comprising: an image forming unit configured to form an image on a sheet; a conveyance roller configured to convey the sheet in a conveyance direction toward the image forming unit; a downstream sheet detector disposed downstream of the conveyance roller in the conveyance direction, the downstream sheet detector being configured to output a signal according to whether the downstream sheet detector detects the sheet; a registration roller disposed downstream of the downstream sheet detector and upstream of the image forming unit in the conveyance direction; a driving source configured to supply a driving force to the conveyance roller and the registration roller; an upstream sheet detector disposed upstream of the conveyance roller in the conveyance direction, the upstream sheet detector being configured to output a signal according to whether the upstream sheet detector detects the sheet; a controller configured to perform: