Canon Kabushiki Kaisha

Agency of Industrial Science and Technology

The Reseach Institute of Innovative Technology for the Earth

Taiki Watanabe

Akeshi Asaka

Yuma Kobayashi

Takashi Matsuda

Akihiro Taya

Hidetaka Kawamura

Satoru Nishiuma

Ryunosuke Kawahara

Kozo Mori

Michiaki Umeno

Kenji Ushikoshi

Jingang Wu

Hirotaka Mabuse

Masahiro Saito

Shengcheng Luo

Masami Takeuchi

Jamil Toyir

Provided is an electrophotographic belt having an endless shape including a base layer, wherein the base layer includes a polyimide film containing polyimide serving as a binder resin and a carbon nanotube, wherein the polyimide has an imidization ratio of 80% or more, wherein the carbon nanotube has at least one resin selected from the group consisting of: polyphenylsulfone; polysulfone; and polyethersulfone present on at least part of a surface thereof. The base layer has a tensile strength of 200 MPa or more in each of a peripheral direction thereof and a direction perpendicular to the peripheral direction.

Electrophotographic belt, electrophotographic image forming apparatus, method of producing electrophotographic belt, and varnish

Provided is an electrophotographic belt of an endless shape including a substrate, wherein the substrate contains a polyimide resin and carbon nanotubes, wherein a content of the carbon nanotubes in the substrate is 15 vol % or less with respect to a total volume of the polyimide resin, wherein the substrate has a tensile strength of 200 MPa or more in each of a peripheral direction thereof and a direction perpendicular to the peripheral direction, and wherein the substrate has a thermal conductivity of 0.9 W/(m·K) or more in a thickness direction thereof.

Electrophotographic belt having a substrate containing a polyimide resin and carbon nanotubes, electrophotographic image forming apparatus, fixing device, and varnish

The invention relates to a copper-based catalyst with high activity and a long catalyst life and to a method of producing the catalyst. This catalyst essentially comprises copper oxide, zinc oxide, aluminum oxide, and silicon oxide and optionally containing zirconium oxide, gallium oxide, and palladium oxide, wherein with the total weight of the catalyst being taken as 100%, the above oxides account for, in the order mentioned, 20-60 weight %, 10-50 weight %, 2-10 weight %, 0.3-0.9 weight %, 0-40 weight %, 0-10 weight %, and 0-10 weight %, respectively, and the silicon oxide mentioned above has been derived from colloidal silica or dissolved silica in water, which catalyst has been subjected to calcination at 480-690.degree. C.

Copper-based catalyst and method for production thereof

Growing community of inventors

Tokyo, Japan

Taiki Watanabe