Patent ID: 6035176
Filing Date: 2000-03-07
Classification: B08B,G03G

Abstract:
An image forming apparatus comprising:a photoreceptor belt circulating along an endless track by a plurality of rollers;a laser scanning unit for forming a latent electrostatic image on the photoreceptor belt;a development unit for developing the latent electrostatic image formed on the photoreceptor belt into a toner image;a drying unit for drying the photoreceptor belt;a transfer unit for transferring the toner image of the photoreceptor belt onto a sheet of paper;a cassette-type cleaner having a case having a cavity at its one side, a cleaning belt partially exposed by the cavity and installed within the case so as to contact a contaminated portion of the photoreceptor belt, and first and second guiding rollers rotatably installed within the case and spaced a predetermined distance apart from each other, for guiding the cleaning belt; anda shifter for making the cleaning belt of the cassette-type cleaner either contact or not contact the contaminated portion, wherein the shifter includes an actuator, and an actuating load connecting the actuator to a shaft of the first guiding roller installed in the cavity of the case and being reciprocated by the actuator, and wherein a guiding groove for guiding the shaft of the first guiding roller to move is formed at both sides of the case so that the first guiding roller moves along the guiding groove by the reciprocating actuating load so as that the cleaning belt either contacts or does not contact the contaminated portion.