Canon Kabushiki Kaisha

Kenji Onuma

Yasuto Kodera

Masanobu Asaoka

Takatsugu Wada

Yukio Hanyu

Tadashi Mihara

Koichi Sato

Osamu Taniguchi

Hideaki Takao

Makoto Kojima

Katsutoshi Nakamura

Yoshio Hotta

Naoto Kameyama

Akira Watanabe

Rieko Sakamoto

Yasushi Shimizu

Kimihiro Yoshimura

Keisuke Abe

Masahiro Takenaga

Masaaki Suzuki

Yasuyuki Watanabe

Katsutoshi Misuda

Hiroshi Tominaga

Akihiko Komura

Mayumi Yoshioka

Keiji Karube

Mayumi Akena

Masamichi Saito

Kenji Shinjo

Kazuya Ishiwata

Seishi Miura

Yuichi Masaki

Toshifumi Yoshioka

Koichi Nakamura

Kouichi Uchida

Maho Tanaka

Takenori Sueoka

Mutsuo Mitsui

Tadanobu Yoshikawa

Bunryo Sato

Nobuyuki Hosoi

Ako Takemura

Kazuhiro Aoyama

Shigeki Takishita

Kouki Nukanobu

An electrophotographic member comprising a base layer and a surface layer, the surface layer including at least one of an acrylic resin and a methacrylic resin, perfluoropolyether having a specified structure and a fluorine-containing copolymer, the fluorine-containing copolymer having a first polymerized unit of at least one of methyl acrylate and methyl methacrylate, and a second polymerized unit of at least one of methyl acrylate having a fluoroalkyl group and methyl methacrylate having a fluoroalkyl group, a molar ratio between the first polymerized unit and the second polymerized unit being 7 to 12, the fluorine-containing copolymer having Mw of 80000 or more and 150000 or less, and the ratio between Mn and Mw (Mw/Mn) being 3.0 or more and 6.5 or less.

Electrophotographic member and electrophotographic image forming apparatus

An electrophotographic member capable of further reducing adhesion of a toner to an outer surface. The electrophotographic member comprises a base layer and a surface layer laminated in this order in a thickness direction of the electrophotographic member, the surface layer containing a binder resin, perfluoropolyether, and an ionic liquid, a content of the perfluoropolyether with respect to the binder resin being 20% by mass or more and 100% by mass or less, and a contact angle of a surface on a side of the surface layer that is opposite to a side facing the base layer with respect to hexadecane being 65&#xb0; or more.

An electrophotographic belt including at least a base layer and a surface layer on or above the base layer, the surface layer including a binder resin and perfluoropolyether (PFPE), having a thickness of 2 &#x3bc;m or more. PFPE is removed to obtain a PFPE-removed surface layer, the PFPE-removed surface layer has pores having openings at an outer surface thereof. When assuming that the PFPE-removed surface layer is a solid-surface layer, a ratio of a total volume of the pores contained in the PFPE-removed surface layer to a volume of the solid-surface layer is 8 to 25%. A ratio of a sum of areas of the openings to a unit area (1 &#x3bc;m) of the outer surface of the PFPE-removed surface layer is 10 to 35%, and the number of the openings per unit area (1 &#x3bc;m) of the outer surface of the PFPE-removed surface layer is 10 to 500.

Electrophotographic belt, method for producing the same, and electrophotographic image forming apparatus

An intermediate transfer member for electrophotography comprising a substrate and a surface layer provided on the substrate. The surface layer comprises a binder resin and a perfluoropolyether. An extraction amount of the perfluoropolyether per 10 mmof the surface layer, is 0.10 mg to 5.00 mg, the extraction amount of the perfluoropolyether obtained by immersing the intermediate transfer member into a solvent that can dissolve the perfluoropolyether at 25&#xb0; C. for 24 hours. A surface of the intermediate transfer member that is not subjected to first and second treatments, has a n-hexadecane contact angle of 55&#xb0; or more. A surface of the intermediate transfer member that has been subjected to the first treatment, has a n-hexadecane contact angle of 40&#xb0; or less. A surface of the intermediate transfer member that has been subjected to the second treatment, has a n-hexadecane contact angle of 50&#xb0; or more.

Intermediate transfer member for electrophotography and electrophotographic apparatus

The present invention relates to an electrophotographic intermediate transfer member that, even if an image is repeatedly and continuously transferred, can retain its transfer performance and can obtain an excellent image for a long time. The electrophotographic intermediate transfer member has a base layer and a surface layer, the surface layer has a matrix-domain structure in the cross section in the thickness direction, the matrix is formed of a binder resin, the domains contains a perfluoropolyether, and a microhardness of a surface of the electrophotographic intermediate transfer member measured by an ultramicro-hardness meter is 50 MPa or more.

Electrophotographic intermediate transfer member and electrophotographic apparatus

A member for electrophotography having a multilayer structure or a single-layer structure, including an outermost layer which satisfies the following A, B and C:

Member for electrophotography, process cartridge, and electrophotographic apparatus

An object of the present invention is to provide: an electrophotographic member which enhances image quality, prevents the lowering of a grade of an image even when images have been repeatedly output, and can remarkably enhance the stability of the grade of the image; an intermediate transfer member; and an image forming apparatus. The electrophotographic member includes a base layer and a surface layer, wherein the surface layer has a binder resin, perfluoropolymer fine particles, a fluorocarbon resin dispersing agent and a particular fluorine compound, wherein the perfluoropolymer fine particle has a fluorine compound carried on its surface.

Electrophotographic member, intermediate transfer member, image forming apparatus, and method for manufacturing electrophotographic member

A recording medium comprising on a base material an ink-receiving layer containing an alumina hydrate, said ink-receiving layer being formed by applying a coating liquid containing said alumina hydrate to said base material followed by drying to form a layer to be said ink-receiving layer, swelling said layer to be said ink-receiving layer again, and pressing the swollen layer to a heated mirror-finish drum for drying, the glossiness of the surface of the recording medium on the side of the ink-receiving layer as measured at 20&deg; being 20% or more.

Recording medium, manufacturing process thereof and image forming method using the medium

An ink-jet recording medium comprising a base material and an ink-receiving layer provided thereon. The ink-receiving layer comprises an upper layer containing an aluminum-based pigment and a lower layer containing an aluminum-based pigment having a BET specific surface area larger than that of the aluminum-based pigment contained in the upper layer.

Recording medium and image forming method utilizing the same

A liquid crystal device is formed by a pair of substrates each having thereon electrodes, and a liquid crystal disposed between the substrates so as to be movable along surfaces of the substrates. The liquid crystal is disposed over regions extending between the surfaces of the substrates including an effective optical modulation region, a first peripheral region outside the effective optical modulation region and a second peripheral region formed along a part or an entirety of outer periphery of the first peripheral region. The liquid crystal is disposed to have a higher liquid crystal molecular pretilt angle in the first peripheral region than in the effective optical modulation region. The liquid crystal is disposed in a random alignment state free from uniaxial alignment characteristic or in a layer structure in the second peripheral region. As a result, the liquid crystal molecular movement along the extension of substrates is suppressed in the effective optical modulation region and in the second peripheral region and relatively allowed in the first peripheral region, so that the impurities in the liquid crystal are confined in the second peripheral region while avoiding the liquid crystal thickness irregularity.

Liquid crystal device, image display apparatus and image forming

A liquid crystal device is formed of a pair of substrates oppositely disposed with adhesive particles dispersed between the substrates, a sealing member disposed along a periphery of the substrates while leaving a liquid crystal injection port to be later sealed, and a liquid crystal disposed in a region surrounded by the sealing member and the liquid crystal injection port later sealed. In the device, the region surrounded by the sealing member for disposing the liquid crystal is divided into a rectangular first region for effective optical modulation and a second region surrounding the first region not contributing to substantial optical modulation, and the adhesive particles are disposed in a dispersed state in the first region and selectively at a portion of the second region in proximity to the injection port so as to minimize a cell gap distribution and provide a broader drive margin temperature characteristic.

Liquid crystal device and process for production thereof

A ferroelectric liquid crystal device of a cell structure having a suppressed increase of cell thickness along a cell side is constituted by disposing a ferroelectric liquid crystal between a pair of electrode plates each sequentially provided with an electrode, an insulating film and an alignment film on a substrate. The alignment film is provided with a surface unevenness for suppressing a liquid crystal movement causing the increase in cell thickness. The surface unevenness is provided to the alignment film directly or to the insulating film below the alignment film, e.g., by wet forming the relevant film by using at least two solvents having different boiling points or dispersing fine particles within the relevant film, optionally followed by removal of the fine particles.

Method of making ferroelectric liquid crystal device using particles to

Ferroelectric liquid crystal device with uneven surface under alignment

An apparatus for spraying a spacer material having a sprayer for spraying the spacer material; a charger for applying an electrical charge to the spacer material; and a device for imparting a potential to an electrode disposed in the rear of a plate for constituting a liquid crystal cell wherein the potential causes an electrical attraction to take place between the charged spacer material and the electrode.

Apparatus for spraying particulate material in an evaporatable

A ferroelectric liquid crystal device of a cell structure having a suppressed increase of cell thickness along a cell side is constituted by disposing a ferroelectric liquid crystal between a pair of electrode plates each sequentially provided with an electrode, an insulating film and an alignment film on a substrate. The aligment film is provided with a surface unevenness for suppressing a liquid crystal movement causing the increase in cell thickness. The surface unevenness is provided to the aligment film directly or to the insulating film below the alignment film, e.g., by wet forming the relevant film by using at least two solvents having different boiling points or dispersing fine particles within the relevant film, optionally followed by removal of the fine particles.

Ferroelectric liquid crystal device and process for production thereof

Growing community of inventors

Isehara, Japan

Kenji Onuma