Sharp Kabushiki Kaisha Corporation

Tadaaki Kawano

Susumu Murakami

Katsuyoshi Fujiwara

Takashi Nishida

Fukusaburo Ito

Yuji Okamoto

Masanobu Deguchi

Tomohiko Okada

Takahiro Fukunaga

Atsushi Ide

Kimihide Tsukamoto

Yoshiaki Ibuchi

Hideshi Izumi

Hideaki Hagihara

Minoru Tomiyori

Takateru Yamamoto

Motoaki Okitsu

Yoshikado Yamada

Yasushi Matsutomo

Kazushi Yamamoto

Takashi Makiura

Masaru Nishijima

Ken-ichi Iwamoto

Haruyoshi Migita

Akira Mitsuyama

Takashi Miyaji

Hiroaki Uchiyama

Kazuo Maeyama

Osamu Tashiro

Akira Kohno

Ituro Katoh

Shinichiro Hiraoka

Keizo Ito

Tutomu Kato

Hiroshi Hamaguchi

Kunihiko Sakaguchi

Atsushi Saito

Kouji Aoki

An image-forming apparatus is provided which includes a document reading section for reading image information from a document, and an image-forming section for forming an image on a sheet of paper based upon the image information of the document read by the document reading section. A space section is formed below the document reading section, which accommodates the image-forming section and serves as a discharge section to which the sheet of paper bearing the image formed in the image-forming section is discharged. The space section is surrounded by peripheral walls of an apparatus main body including the image-forming section. The image-forming apparatus further includes a paper post-treatment section that subjects the sheet of paper bearing the image to post-treatments, such as an adjustment process and a stapling process, in a virtually horizontal state, and that is placed between the document reading section and the space section.

Image forming apparatus with paper post-treatment device

A circulating type of automatic document feeding apparatus comprising a document hopper which is adapted to take out the top document from the hopper or take it out from the bottom to return in onto the topmost side, a first carrying means for carrying the document form the document hopper to a first exposure portion, a document presentation portion having the first exposure portion and the second exposure portion, a second carrying means which is equipped with an inside and outside inverting means for inverting the carrying direction of the document between the first exposure portion and the second exposure portion, and a third carrying means for returning the document to the document hopper from the second exposure portion. One face of the duplex document may be exposed in the first exposure portion to continuously expose the other face thereof in the second exposure portion, so that the copying operation of the duplex document may be effected at higher speeds and furthermore with considerably reduced operations on the part of the operator.

Circulating type of automatic document feeding apparatus and duplex

A photoreceptor of an electrophotographic copying machine is rotatably supported by a mounting member. The mounting member is rotatably supported by a supporting member which can slide out of the housing of the copying machine. The supporting member also supports a developing station. When the supporting member is pulled out of the housing, the developing station can be displaced on the supporting member away from the photoreceptor and the mounting member can be rotated so as to expose the photoreceptor such that its surface becomes accessible from outside.

Photoreceptor attachment device for an electrophotographic copying

An electrophotographic copying machine of a magnification/reduction-controllable type having a copy paper size display, a original copy picture size display, and a control circuit for controlling the operation of the two displays. Preferably, the copy picture size display is an analog display.

Electrophotographic copying machine for displaying the size of copy and

An electrophotographic copying machine comprises a cleaning device for cleaning at least the tip of a separation claw used for separating a copy paper from a photoreceptor. The separation claw is pivotably moved between a first position of separating the copy paper and a second position cleaning by the cleaning device. The cleaning device may also be operated to clean a transport device for transporting the copy paper toward a subsequent portion of the apparatus, such as a fixing device.

Cleaning device for cleaning copy paper separation device and transport

An electrophotographic copying machine including a cleaning device for cleaning at least a tip of a separation claw separating a copied paper from a photoreceptor. The separation claw is pivotally moved between a first position separating the copied paper and a second position of cleaning itself by the cleaning device. At least one solenoid is provided for pivotally moving the separation claw between the first position and the second position.

Cleaning device for cleaning copy paper separation device in

A lens positioning mechanism for an electrophotographic copying machine capable of reproducing a copy of an original at a plurality of different magnifications one at a time, which comprises an optical apparatus including a lens assembly supported for movement to any one of several operative positions each required for the reproduction of a copy at the respective magnification. The lens assembly is rigidly mounted on a lens mount movable in a direction perpendicular to the optical axis and mounted on a lens carriage movable in a direction close towards and away from a photoreceptor.

Lens positioning mechanism for a copying machine

A fixing device for fixing images of an original document on a copy material is provided for a plain paper copier. The fixing device comprises a pair of rollers for stressing under pressure the copy material carrying toner powder thereon. The toner powder is tightly adhered to the surface of the copy material to correspond to the images of the original document. In a preferred form, the toner powder is a pressure-fixable developing powder which consists of a wax component and a thermoplastic resin. A developing powder supplier is disposed within a developer powder reservoir for supplying developer powder to a magnet brush. A rotatable cylindrical magnet is provided within said developing powder supplier for generating a non-uniform magnetic field to stir the developer powder within the reservoir. A copy sheet stripping device is also provided which moves in synchronization with the approach of a copy sheet towards the fixing device and to move in synchronization with the separation of the copy sheet away from the fixing device.

Fixing device for fixing images of an original document on plain paper

A developer powder supply means is disposed within a developer reservoir for supplying developer powder to a magnet brush developing roller which is placed adjacently to a drum surface carrying an electrostatic latent image formed thereon. The developer powder supply means comprises a stationary sleeve and a rotatable cylindrical magnet enclosed by the stationary sleeve. The rotatable cylindrical magnet includes a magnet shunt means or has an odd number of magnetic poles to produce distorted distribution of the magnetic field. The stationary sleeve has an extended portion which is placed above the rotatable cylindrical magnet, where the magnetic field established by the rotatable cylindrical magnet does not effect the developer powder.

Developer powder supply in magnet brush development

Growing community of inventors

Nara, Japan

Tadaaki Kawano