IMAGE FORMING APPARATUS AND BELT DEVICE

摘要

An image forming apparatus includes an image bearing member that bears an image, a transfer belt that is constituted of an endless belt member and onto which the image on the image bearing member is transferred, and multiple roller members around which the transfer belt is rotatably wrapped. The multiple roller members include a drive roller that rotationally drives the transfer belt and a tilt changeable roller that is capable of changing a tilt angle thereof. An area of the tilt changeable roller that is in contact with the belt member is provided with a contact portion composed of rubber with a coefficient of static friction selected from a range between 0.7 and 1.3.

主权项

1. An image forming apparatus comprising:
an image bearing member that bears an image; a transfer belt that is constituted of an endless belt member and onto which the image on the image bearing member is transferred; and a plurality of roller members around which the transfer belt is rotatably wrapped, the plurality of roller members including a drive roller that rotationally drives the transfer belt and a tilt changeable roller that is capable of changing a tilt angle thereof, wherein an area of the tilt changeable roller that is in contact with the belt member is provided with a contact portion composed of rubber with a coefficient of static friction selected from a range between 0.7 and 1.3.