Transfer unit and image forming apparatus including same

摘要

A transfer unit detachably mountable relative to an image forming apparatus includes a plurality of rotational supports, an endless-looped belt disposed opposite to an image bearer and movably supported by the plurality of rotational support to contact the image bearer to form a transfer portion at which the toner image is transferred, a contact-and-separation device to move the belt to contact and separate from the image bearer, a base to support the plurality of rotational supports, a belt pressing member disposed facing the belt and detachably mountable relative to the base to contact an end portion of the belt, and a first stopper to prevent the belt pressing member from separating from the base while the belt is in contact with the image bearer by the contact-and-separation device and to allow the belt pressing member to separate from the base while the belt is separated from the image bearer.

主权项

1. A transfer unit detachably mountable relative to an image forming apparatus having an image bearer that bears a toner image, comprising:
a plurality of rotational supports; an endless-looped belt disposed opposite to the image bearer and movably supported by the plurality of rotational supports, to contact the image bearer to form a transfer portion at which the toner image is transferred; a contact-and-separation device to move the belt to contact and separate from the image bearer; a base to support the plurality of rotational supports; a belt pressing member disposed facing the belt and detachably mountable relative to the base, to contact an end portion of the belt; and a first stopper to prevent the belt pressing member from separating from the base while the belt is in contact with the image bearer by the contact-and-separation device and to allow the belt pressing member to separate from the base while the belt is separated from the image bearer.