Canon Kabushiki Kaisha

Fujitsu Corporation

Dainippon Ink and Chemicals, Incorporated

Hisami Tanaka

Teigo Sakakibara

Masafumi Hisamura

Hiroyuki Ohmori

Akihiko Ito

Masami Okunuki

Harumi Sakou

Masahiro Kanai

Takashi Koyama

Kazuhiro Kobayashi

Yuichi Hashimoto

Akio Maruyama

Toshihiro Kikuchi

Naoto Fujimura

Takakazu Tanaka

Noriko Ohtani

Shin Nagahara

Yosuke Okubo

Michinobu Ohhata

Tatsuo Kawara

Mutsuo Ohtaka

Tatsu Nakajima

Shinichi Shibayama

Kunihiko Goto

Osamu Takenouchi

Tomohiro Kimura

Masafumi Sano

Keishi Saitoh

Kiyoshi Sakai

Tatsuyuki Aoike

Koichi Matsuda

Hideo Kawahara

Seiji Kato

Masaaki Hiro

Noboru Kashimura

Mitsuyuki Niwa

Norio Ueno

Shigemori Tanaka

Junichi Kishi

Masao Yamasawa

Yoshihisa Takayama

Masayuki Takahashi

Tadahiro Saito

Hitoshi Tohma

Kouichi Matuda

Mituyuki Niwa

Keishi Saitou

Masahumi Sano

Masami Okuda

Masauki Takahasi

Khe Nguyen Chanh

Tatuyuki Aoike

A process for producing an aluminum pipe is disclosed which has the steps of cutting the aluminum pipe on its periphery, and thereafter carrying out rotary pressure rolling. Also, an electrophotographic photosensitive member, a device unit, an electrophotographic apparatus and a developing roll having the aluminum pipe are disclosed.

Aluminum pipe production process, electrophotographic photosensitive

An electrophotographic photosensitive member has an electroconductive support and a photosensitive layer thereon which contains a compound of Formula 3, 5-11, 13 or 14 as follows: ##STR1##

Electrophotographic photosensitive member

A charging member for electrophotography comprising a surface layer, wherein the surface layer comprises a resin and an alkali metal salt contained therein.

Charging member, electrophotographic apparatus and charging method using

Electrophotographic photosensitive member produced from aluminum pipe

An electrophotographic photosensitive member of the present invention has a photosensitive lazer containing a compound represented by the formula (1): ##STR1## The electrophotographic photosensitive member has a high sensitivity and can maintain stable and excellent electrophotographic characteristics even when repeatedly used.

A new polysilane composition usable as an organic semiconductor which contains a specific polysilane compound of 6000 to 200000 in a weight average molecular weight in which all the substitutional groups and end groups being substituted by specific organic groups not containing oxygen atom, said polysilane compound not containing chlorine atom, and an acceptor level forming material or/and a donor level forming material.

Polysilane compositions

A solar cell, comprising a solar cell unit and a protective layer formed on the solar cell unit, wherein the protective layer comprises conductive particles.

Solar cell

A solar cell, comprising a solar cell unit and a protective layer formed on the solar cell unit, wherein said protective layer comprises a polymer formed by polymerization of a cyclotriphosphazene monomer represented by the following formula (I): ##STR1## wherein R.sub.1 to R.sub.6 independently denote an ethylenically unsaturated polymerizable group. The cyclophosphazene monomer preferably contains R.sub.1 to R.sub.6 which are represented by the formula (I): ##STR2## wherein R.sub.7 denotes an alkylene group, arylene group, alkyl-substituted arylene group, alkylamide group arylamide group or polyoxyalkylene group, and R.sub.8 denotes a hydrogen atom or a methyl group. The polymer obtained from the cyclotriphosphazene monomer is effective for providing a solar cell having high and stable output efficiency, mechanical durability, and good environmental stability.

An electrophotographic photosensitive member is disclosed which has an electroconductive support and a photosensitive layer formed thereon. The photosensitive layer contains at least one polycarbonate selected from the group consisting of polycarbonates (1) to (3); and a charge-transportion substance having the structure represented by the formula (4) or (5) and having an oxidation potential of not less than 0.6 eV. Also, an electrophotographic apparatus, device unit and facsimile machine employing the electrophotographic photosensitive member are disclosed.

Electrophotographic photosensitive member, and electrophotographic

An electrophotographic light receiving member comprising a substrate and a light receiving layer having a multi-layered structure disposed on said substrate, said light receiving layer comprising at least a photoconductive layer and a surface layer being stacked in this order from the side of said substrate, said photoconductive layer being formed of a non-single crystal material containing silicon atoms as the matrix and at least one kind of atoms selected from the group consisting of hydrogen atoms and halogen atoms, and said surface layer being formed of a polysilane compound having a weight average molecular weight of 6000 to 200000 and having at least an oxygen-free organic group selected from the group consisting of alkyl group, cycloalkyl group, aryl group and aralkyl group at the terminals.

Electrophotographic light receiving member having a photoconductive

An improved junction type photovoltaic element, characterized by having an organic semiconductor layer formed of a polysilane compound of 6000 to 200000 in weight average molecular weight which is represented by the following general formula (I): ##STR1## Wherein, R.sub.1 stands for an albyl group of 1 to 2 carbon atoms; R.sub.2 stands for an alkyl group, cycloalkyl group, aryl group or aralkyl group of 3 to 8 carbon atoms; R.sub.3 stands for an alkyl group of 1 to 4 carbon atoms; R.sub.4 stands for an alkyl group of 1 to 4 carbon atoms; A and A' respectively stands for an alkyl group, cycloalkyl group, aryl group or aralkyl group of 4 to 12 carbon atoms wherein the two substituents may be the same or different one from the other; and each of n and m is a mole ratio showing the proportion of the number of respective monomers versus the total of the monomers in the polymer wherein n+m=1, 0&lt;n.ltoreq.1 and 0.ltoreq.m&lt;1.

Photovoltaic element of junction type with an organic semiconductor

An image holding member comprises an electroconductive substrate, a resin layer, and an image holding layer. The resin layer is placed between the electroconductive substrate and the image holding layer. The resin layer comprises metal-coated fine resin particles, and a binder resin.

Image holder member having resin layer of metal-coated fine resin

Polysilane compounds and electrophotographic photosensitive members with

A member for charging comprises a surface layer formed of a N-alkoxymethylated nylon. A contact charging method performs charging of a member to be charged arranged in contact with the member for charging by applying externally a voltage on the member for charging. An electrophotographic device comprises the member for charging and an electrophotographic photosensitive member arranged in contact with the member for charging.

Member for charging with surface layer of N-alkoxymethylated nylon

There is provided a charging member comprising an electroconductive substrate, and an elastic layer, an electroconductive layer and a resistance layer disposed in this order on the substrate. Such charging member provides good contact with a photosensitive member, to provide good image quality without causing an image defect such as white spot based on charging unevenness. Further, the charging member causes no leak even when the photosensitive member has a pin hole, and reduced the level of noise based on an AC voltage to be applied thereto.

Charging member

Growing community of inventors

Yokohama, Japan

Hisami Tanaka