IMAGE FORMING APPARATUS

摘要

When a drive roller is at a stopped state, an execution portion executes a move mode in which a time from when a rotation of a drive roller has been stopped is measured, and based on the measured result, rotation of the drive roller is started and stopped. In the move mode, a portion of a secondary transfer belt having been at a first contact position in the stopped state is moved to a position other than the first contact position and the second contact position, and the rotation of the drive roller is stopped.

主权项

1. An image forming apparatus comprising:
an image bearing member; a toner image forming portion configured to form a toner image and having the toner image borne on the image bearing member; an endless belt; a transfer roller including an elastic layer formed of rubber material and configured to form a transfer nip by being in contact with an inner surface of the endless belt at the first contact position where the toner image is transferred; a drive roller including a surface layer formed of rubber material and configured to rotate and move the endless belt by being in contact with the inner surface of the endless belt at a second contact position; a timer configured to measure a time from when a rotation of the drive roller has stopped; and an execution portion configured to execute a move mode of starting the rotation of the drive roller based on a result of measurement of the timer when the drive roller is in a stopped state, and of stopping the rotation of the drive roller after moving an area of the endless belt having been positioned in the first contact position at the time of the stopped state to a position other than the first contact position and the second contact position.