Patent ID: 8831479

Claim:
A unit mounting and dismounting mechanism comprising: a unit mountable in and dismountable from an apparatus body; an engaging portion provided in one of the apparatus body and the unit; a pressing member provided in the other of the apparatus body and the unit, the pressing member engaging with the engaging portion and pressing the unit against the apparatus body with a biasing force of a biasing member in a mounting direction of the unit when the unit is mounted in the apparatus body; and a release member provided in the unit, the release member being operated in a direction different from a dismounting direction of the unit from the apparatus body so as to move the pressing member against the biasing force of the biasing member in a direction to release pressing; wherein a connecting portion that moves in the mounting direction to be connected to a connected portion provided in the apparatus body and moves in the dismounting direction to be disconnected from the connected portion is provided at one end of the unit in a longitudinal direction intersecting the mounting direction, and wherein the release member is provided at the one end in the longitudinal direction.