Image-forming machine having an image forming unit movable from an

Abstract

An image-forming machine which has an image-forming unit that moves substantially horizontally between an acting position in a housing and a non-acting position that is drawn out forward. The image-forming unit has a frame having a front wall member and a rear wall member, and a plurality of image-forming devices mounted on the frame. The front wall has a pair of receiving holes arranged at a distance in the transverse direction and the rear wall has a pair of pins located at a distance in the transverse direction. In a preferred embodiment, the housing has a pair of pins located in the front and a pair of receiving holds in the rear such that when the image-forming unit is brought to the acting position, the receiving holes of the front wall engage the front pins of the housing and the pins on the rear wall engage the receiving holes in the rear of the housing. Each of the image-forming devices includes a rotary shaft, a rotary drum mounted on the rotary shaft, and bearing members fitted to both ends of the rotary shaft. The bearing members have a cylindrical outer peripheral surface. Both the front and rear wall members have a mounting plate with mounting notches that are opened upward. The mounting notches have two support edges which, when the bearing members of the image-forming devices are introduced therein from the upper side, support the bearing members. Releasable locking members are also provided to lock the image-forming devices in position.