Abstract: A paper sheet conveying apparatus and method for an image information processor in which a paper sheet with image information recorded thereon can be prevented from a skew carriage. The paper sheet conveying apparatus includes a driving motor which is controlled to be shifted from a forward revolution mode to a reverse revolution mode or vice versa. The paper conveying apparatus further includes a power cleaving means that selectively supplies the power to a first power transmitting system and to a second power transmitting system.

Abstract: A process and an apparatus for cleaning an organic photosensitive drum in an image forming apparatus including a developer housing formed with an exposure window at a desired portion thereof and contained therein with an organic photosensitive drum, a developing roller, and a charging roller, the developing roller being configured to recover toner particles left on an outer surface of the organic photosensitive drum, for reuse thereof. The drum cleaning apparatus includes a cleaning film arranged between the charging roller and the exposure window while being in contact with the outer surface of the organic photosensitive drum, the cleaning film serving to remove foreign matters affixed to the outer surface of the organic photosensitive drum.

Abstract: An image formation apparatus capable of easily removing a jammed paper including upper and lower bodies pivotally combined to each other, a photosensitive drum detachably combined with the upper body, an arm provided with an LED and pivotally installed in the upper body so as to facilitate the attachment and detachment of the photosensitive drum, a developing device and a paper supply cassette detachably installed in the lower body, lower rolling means including a paper supply roller and a paper convey roller located on the same axis between the developing device and paper supply cassette, upper rolling means and fixing rollers provided on the opposite of the detaching side of the photosensitive drum installed in the upper body.

Abstract: A developing machine comprising a photosensitive drum for forming an electrostatic latent image on a face thereof, a developing roller for supplying a developing agent to the photosensitive drum, a doctor blade for controlling a thickness of a developing agent layer on the developing roller, a slanted face which is adjacent to the developing roller and prevents movement of the developing agent, a blocking jaw for blocking the developing agent so that a flow of the developing agent is generated and a magnetic roller which is mounted in the developing roller. The magnetic roller is comprised of a plurality of pieces of block magnets which are arranged alternately at particular angles.