Developer Unit and Image Formation Device

摘要

A developing unit and image formation device in which a developer carrier is reliably pressed towards and separated from an image carrier is described. A separation and pressing mechanism is provided for separating and pressing the developer carriers of developing cartridges installed in a drum unit onto image carriers. This separation and pressing mechanism has a pair of direct cam members. Each direct cam member has a release action portion that engages with the releasing projection of a developing cartridge when the developer carrier is to be separated from the image carrier. Each direct cam member may also have a pressing action portion that engages with the pressing projection of the developing cartridges when the developer carrier is to be pressed onto the image carrier.

主权项

1. A developer unit comprising:
a case configured to house developer; a developer carrier; a pressing projection protruding beyond the case in a first direction; and a releasing projection protruding beyond the case in a second direction parallel to the first direction; and a rotating member provided on the case and allowed to pivotally rotate with respect to the case about a rotational axis, the rotating member including at least one of the pressing projection and the releasing projection, wherein the pressing projection is provided on the rotating member, wherein the rotating member is a handle, and wherein at least one of the pressing projection and the releasing projection is movable with respect to the case.