Mita Industrial Co., Ltd.

Kyocera Document Solutions Inc.

Tsuneo Oki

Yasuyuki Hanatani

Hiroaki Sakai

Keisuke Sumida

Eiichi Miyamoto

Hiroaki Iwasaki

Nariaki Muto

Keizo Kimoto

Yoshinobu Yoneima

Mamoru Uemura

An image-forming device is provided with a shutter member that has a ventilation passage formed extending therethrough in a main scanning direction, the shutter member adapted to slide over the outside surface of the housing in a secondary scanning direction, a cover member adapted to open or close an interior of a chassis of the device. The shutter member, when the cover member is moved in a direction to open up the inside of the device chassis, is moved in a direction to shut an output window, and when the cover member is moved in a direction to close up the inside of the device chassis, is moved in a direction to open the output window. In association with movement of the shutter member towards the open direction, the ventilation passage faces a ventilation opening of a duct furnished to the device chassis.

Image-forming device and light scanning device

The present invention is an optical scanning apparatus that is positioned and fixed to a metal frame of an image forming apparatus, in which a rotating polygon mirror being a deflection means and a drive motor rotationally driving the rotating polygon mirror are accommodated inside a housing made of resin. In the present invention, a bearing of the drive motor and a positioning member provided upright to the metal frame are inserted into and fitted with each other from opposite directions in a positioning boss formed in the housing, and the bearing is in contact with the positioning member.

Optical scanning apparatus and image forming apparatus provided with the same

An electrophotosensitive material of the present invention is formed by providing a photosensitive layer containing a bis-azo pigment expressed in formula (1): ##STR1## wherein A.sup.1, A.sup.2, R.sup.1 and n are as defined, as a charge generating material, and a diamine compound expressed in formula (2): ##STR2## wherein R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 p and q k, l, m and o are as defined, as a charge-trasferring material, on a conductive substrate. As a charge generating material, a perylene pigment, anthanthrone pigment, X-type metal-free phthalocyanine pigment, imidazoleperylene pigment or perylene bis-azo pigment are preferable used together with the bis-azo pigment. Thus, photosensitive material is excellent in sensitivity and durability.

Electrophotosensitive material

The present invention provides a process for packing a drum-shaped electrophotographic photoreceptor comprising the steps of folding a wrapping-start edge portion of a light-shielding packing sheet outwardly in a diametrical direction of the photoreceptor across a width of the packing sheet, and wrapping the packing sheet on a circumferential surface of the photoreceptor. The packing process of the present invention enables an electrophotographic photoreceptor, which has a small diameter, or has a soft surface and is susceptible to scratching, to be packed without forming scratches on its surface and decreasing its photosensitivity.

Process for packing electrophotographic photoreceptor

Growing community of inventors

Osaka, Japan

Tsuneo Oki