Transfer device of image forming apparatus and related image forming apparatus

摘要

The transfer device transfers a toner image to a recording medium. The recording medium passes through a nip portion formed by a belt roller which is disposed on a main body of an apparatus and a transfer roller which is disposed on an opening and closing cover. The opening and closing cover opens and closes an opening of a main body of the apparatus. The main body includes a positioning member which positions the transfer roller which moves according to a closing operation of the opening and closing cover, to a predetermined distance with respect to the belt roller. The main body also includes an engaging member which engages with the transfer roller and pushes the transfer roller toward a positioning position of the positioning member, by being urged by a pressurizing spring.

主权项

1. A transfer device comprising:
a transfer unit which transfers a toner image to a recording medium which passes through a nip portion formed by a rotary member and a transfer member; a transfer member holding cover which holds the transfer member, opens and closes by rotation, and moves the transfer member between a closed first position in which the nip portion is formed with respect to the rotary member and an open second position in which the transfer member is separated from the rotary member; a positioning member which positions the transfer member relative to the rotary member; and an engaging member which contacts one of the transfer member and the rotary member and pushes the one of the transfer member and the rotary member using an elastic force of a pressurizing spring, toward the other one of the transfer member and the rotary member when the transfer member holding cover is in the first position, and does not contact and does not push the transfer member or the rotary member when the transfer member holding cover is in the second position.