Recording medium conveying device with a separation support roller and image forming apparatus incorporating the same

A recording medium conveying device comprising:

• an endless belt to convey a recording medium;
• a plurality of support rollers around which the belt is wound, to rotate the belt;
• and
• a cleaner in contact with the belt to clean the belt,
• wherein one of the plurality of support rollers is a separation support roller, mounted on a tiltable rotary shaft, to separate the recording medium from the belt using a curvature of the separation support roller,
• wherein one of the plurality of support rollers is a secondary transfer roller, and the belt is entrained about the secondary transfer roller and the separation support roller,
• the separation support roller includes a contact member to contact an edge of the belt when the belt laterally moves toward one side of the belt, and
• wherein the cleaner contacts a portion of the belt in a range in which the belt contacts the secondary transfer roller.