Casio Computer Co., Ltd.

Fujitsu Corporation

Casio Electronics Manufacturing Co., Ltd.

Nippon Carbide Industries Co., Inc.

Masatoshi Maruyama

Takashi Yamamoto

Yoshimichi Katagiri

Norio Sawatari

Yasunori Chiba

Noriki Ono

Yuzo Horikoshi

Yasuaki Ogawa

Takao Yorifuji

Masatoshi Ohtaka

Makoto Koshi

Hiroaki Naito

Kazuhiko Kido

Eiji Sakurai

Mitsuo Hayashi

Sonoo Matsuoka

Takeshi Ogino

Hidenori Nitta

An electronic device of the present invention has a flat-type device case whose front surface is provided with an imaging section and which is covered by a foldable cover, and includes an open/close detecting section which detects an open/close angle of the cover when the cover covers the device case, and outputs a detection signal for causing the imaging section to perform imaging.

Electronic device with a cover for imaging

A toner binder is disclosed which comprises a polyester resin in which an aliphatic hydrocarbon chain terminated with an ester and/or an ether bond to the aliphatic group contains a constituent element consisting of ethylene in an amount of from 1 to 5 wt % based on the total weight of the resin. Further disclosed is a toner binder using both of a crosslinked polyester having a peak molecular weight of 10,000 or less and a linear polyester having a peak molecular weight of 8,000 or more as binder resins, the peak molecular weight of the linear polyester being greater than the peak molecular weight of the crosslinked polyester.

Toner binder, toner, electrophotographic method and apparatus therefor

A developer circular unit is detachably set in a copier or a copier type printer which print on images on a paper sheet with toner. The unit includes at least a developing device, a cleaner, and a developer conveying device having a pipe communicated with both the cleaner and the developing device and a toner flowing-back preventing mechanism. The action of the mechanism is automatically released by the first set of the unit in the copier or printer and/or the first use of the copier or printer after that first set.

Developer restoring unit in an image forming apparatus

Growing community of inventors

Tokyo, Japan

Masatoshi Maruyama