Canon Kabushiki Kaisha

Eiichi Hamana

Shinji Katagiri

Noriaki Egawa

Masaru Shimura

Shuichi Tetsuno

Tsuguhiro Yoshida

Takayuki Tanaka

Keisuke Ishizumi

Takahiro Ikeda

Shohei Ishio

Kouichi Uchida

Yasutomo Tsuji

Toshiyuki Yoshida

An electrophotographic belt having a layered structure with excellent scratch resistance and excellent adhesion of layers to each other. The electrophotographic belt includes a first layer and a second layer directly covering any one of the inner peripheral surface and the outer peripheral surface of the first layer, the first layer containing a first polyester resin, and the second layer containing a second polyester resin and an acrylic resin that contains a carboxy group in its molecule.

Electrophotographic belt and electrophotographic image-forming apparatus

An image forming apparatus includes an endless belt including a base layer and an electroconductive layer positioned on an inner peripheral surface side of base layer and forming an inner peripheral surface of the belt, and a roller provided on the inner peripheral surface side of the belt and including a roller portion around which the belt is wound and which is formed of a metal material. The electroconductive layer contains a binder resin, an electroconductive agent, and a copper compound, and has surface resistivity of 5.0&#xd7;10&#x3a9;/&#x25a1; or less. The roller portion includes a base material of a first metal material comprising a first metal, and a coating layer which forms a surface contacting the electroconductive layer formed of a second metal material comprising a second metal. A difference in standard potential between the second metal and copper is smaller than that between the first metal and copper.

Image forming apparatus which includes a belt having an electroconductive layer

An image forming apparatus includes an endless belt including a base layer and an electroconductive layer positioned on an inner peripheral surface side of the belt than the base layer and forming an inner peripheral surface of the belt, and a roller provided on the inner peripheral surface side of the belt and including a roller portion around which the belt is wound and which is formed of an aluminum material. The electroconductive layer contains a binder resin, an electroconductive agent, and a copper compound, and has surface resistivity of 5.0&#xd7;10&#x3a9;Q/&#x25a1; or less. The roller includes an alumite layer forming a surface contacting the electroconductive layer.

An intermediate transfer belt includes a base layer that has ionic conductivity and is a thickest layer out of multiple layers making up the intermediate transfer belt with respect to the thickness direction of the intermediate transfer belt, and an inner layer having electronic conductivity and a lower electrical resistance than the base layer.

Imaging forming apparatus with enhanced primary transferability where primary transfer is performed with electric current flowing in circumferential direction of intermediate transfer belt

An electrophotographic belt including an electro-conductive layer having high adhesion to a base layer while maintaining high electro-conductivity. The electrophotographic belt has an endless shape, and includes an endless shaped base layer containing a polyester resin, and an electro-conductive layer covering an inner surface of the base layer, the electro-conductive layer containing an electro-conductive particle and a binder resin, and the binder resin containing a polyester resin having at least two monomer units of phthalic acids selected from the group consisting of terephthalic acid, orthophthalic acid and isophthalic acid.

Electrophotographic belt and electrophotographic image forming apparatus

Image forming apparatus where primary transfer is performed with electric current flowing in circumferential direction of intermediate transfer belt

Provided is a coating agent having a polymerizable compound containing a hydroxyl group in the molecule, conductive inorganic particles whose surface is treated with a dispersing agent having a nitrogen atom in the molecule, and a solvent, in which when the interatomic distance between an oxygen atom of the hydroxyl group and the atom farthest away from the oxygen atom in the molecule of the polymerizable compound is represented by D1 and the interatomic distance between the nitrogen atom and the atom farthest away from the nitrogen atom in the molecule of the dispersing agent is represented by D2, D1 and D2 satisfy the relationship represented by the following formula (1).[(|1&#x2212;2|)/2]&#x2266;0.30&#x2003;&#x2003;Formula (1)

Coating agent and method for producing electrophotographic member

Provided is a transfer member for electrophotography, comprising a substrate and a surface layer on the substrate, wherein the surface layer comprises: an acrylic resin having a hydroxyl group; and a fluorine compound, the fluorine compound having an alkyl group including 1 to 8 carbon atoms, and a fluorine atom substituting at least one hydrogen atom in the alkyl group, and comprising a constitutional unit represented by the following formula (1). 

Transfer member for electrophotography and electrophotographic apparatus

The intermediate transfer member is an intermediate transfer member for electrophotography, including a surface layer having a surface for carrying toner, in which: the surface layer contains a fluorine-modified curable resin having one of an acryloyl group and a methacryloyl group, and electro-conductive inorganic particles; and the surface layer has a ratio of the number of atoms of an element derived from the electro-conductive inorganic particles to the total number of atoms to be detected through analysis of the surface by X-ray photoelectron spectroscopy of 2.5 atomic % or more and 10 atomic % or less, and a peak detected at a position corresponding to a mass-to-charge ratio [m/z] of one of m/z=71 and m/z=85 in analysis of the surface by time-of-flight secondary ion mass spectrometry.

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Inagi, Japan

Eiichi Hamana