Image forming apparatus provided with an intermediate transfer belt and meandering prevention pulley

An image forming apparatus, comprising:

• an image bearing member which is configured to bear a toner image;
• an intermediate transfer belt which is configured to transfer the toner image formed on the image bearing member;
• a transfer roller which is installed to face the image bearing member;
• a drive roller which is configured to drive the intermediate transfer belt with the intermediate transfer belt stretched around the drive roller;
• a driven roller which is configured to support the intermediate transfer belt in a manner that allows the intermediate transfer belt to rotate;
• a meandering prevention pully which is arranged to face an end surface of the driven roller in an axial direction of the driven roller;
• and
• a meandering prevention belt
• which is arranged on an outside in the axial direction relative to the meandering prevention pully, and
• which protrudes from an inner peripheral surface of the intermediate transfer belt, the meandering prevention pully having a guide surface
• which faces the meandering prevention belt in the axial direction, and
• which is formed to have a surface roughness Ra 0.9 μm or more and a static friction coefficient of 1.4 or more.