Image forming apparatus with control of steering roller for adjusting position of belt member on which image is formed

摘要

An image forming apparatus includes a belt member; a toner image forming portion for forming a toner image on the belt member; a transfer portion where the toner image formed on the belt member is to be transferred onto a recording material; a recording material supplying portion for supplying the recording material to the transfer portion; a steering portion for adjusting a widthwise position of the belt member by being tilted; and an adjusting portion for adjusting a conveyance direction of the recording material supplied by the recording material supplying portion so that a conveyance direction of the belt member when the steering portion is tilted is the same as the conveyance direction of the recording material supplied by the recording material supplying portion.

主权项

1. An image forming apparatus comprising:
a movable belt member; a toner image forming unit configured to form a toner image on said belt member; a transfer portion where the toner image formed on said belt member is to be transferred onto a recording material; a steering roller configured to stretch said movable belt member and configured to adjust a position of said movable belt member with respect to a widthwise direction crossing a moving direction of said movable belt member to change the moving direction of said movable belt member; a tilting mechanism configured to tilt said steering roller; a detecting member configured to detect a position of said movable belt member with respect to the widthwise direction; a control portion configured to control said tilting mechanism based on an output of said detecting member; a recording material supplying unit configured to supply the recording material to said transfer portion, and configured to be movable to change a conveyance direction of the recording material; and a connecting member configured to connect said steering roller and said recording material supplying unit so that the conveyance direction of the recording material is changed correspondingly to the moving direction of said movable belt member at said transfer portion changed by said steering roller.