Toray Industries, Inc.

Shigehiro Hano

Yoshihiro Chujo

Hidetoshi Hara

Eizo Kanaya

Jun Inagaki

Tetsuya Aiyama

Kimikazu Nagase

Takashi Taira

Koichi Sugihara

Shozo Yoshizawa

Akihito Dobashi

Kousuke Yotsuduka

Hiroyuki Aonuma

Kazuhito Shimura

Naoki Kobayashi

Hiroyuki Takahata

Hajime Saegusa

Satoru Kato

Masaaki Ishiyama

Yoshinobu Takatsuki

Takanobu Hagiwara

An image forming method and image forming apparatus in which a toner image formed on an image carrier ( ) through steps of discharging, main charging, exposure and development is transferred to a recording medium (S) and then fixed as an image using flash light. The image forming apparatus ( ) has a secondary charger ( ) for secondarily charging the image carrier to have the same polarity as a polarity given by a main charger ( ) and a surface potential larger in absolute value than a surface potential given by the main charger.

Electrophotographic image-forming method and apparatus

The invention in this application relates to a toner composition for electrostatic latent image development which is characterized in that, in a toner composition comprising at least binder resin, colorant and charge control agent, to be used in a print forming method provided with a print fixing device which fixes the toner image on a recording medium by means of a light flash, the concentration of benzene generated by heating for 90 seconds at 330&deg; C. is no more than 60 &mgr;g/g, and the invention provides a toner composition for electrostatic latent image development which either extends the filter life or does not require the use of a filter.

Toner composition for developing electrostatic latent image

An electrophotographic apparatus of this invention includes a stacking section for cut sheet; a stacking section for fanfold paper; a feed section for supplying printing paper which is cut sheet or fanfold paper from one of the stacking sections via one of different supplying paths; an exposure unit for forming an electrostatic latent image on a photosensitive drum; a developing unit for developing the latent image into a toner image; a belt conveyer for conveying the printing paper received from the feed section along common feeding path, a transferring unit for transferring the toner image on the photosensitive drum onto the printing paper; a fixing unit for fixing the transferred toner image on the printing paper; an ejecting section for receiving the printed printing paper from the belt conveyer; and a cutting device for cutting apart the printed fanfold paper at the perforation line thereof. The fanfold paper left behind on the common feeding path after the cutting operation is set back to a position which does not obstruct supply of cut paper in the feed section.

Electrophotographic apparatus capable of selectively using cut sheet and

An electrophotographic printer is provided with: a photosensitive drum; a feeding device which feeds a continuous recording sheet; a transfer device which transfers a toner image formed on the photosensitive surface of the drum onto the sheet; a cleaning device which removes residual developer from the photosensitive surface; and a photographic fixing device which fixes the toner image to the sheet. The feeding device includes an endless belt which is located on the downstream side of the drum with reference to the sheet-feeding direction and which travels in one direction. The feeding device also includes a charger which electrically charges the endless belt, so as to allow the sheet to be electrostatically attracted on the endless belt.

Electrophotographic printer

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Otsu, Japan

Shigehiro Hano