Sony Corporation

Takahiro Kawana

Ryoichi Hiratsuka

Yukari Yamada

Chak Chung Andrew Yu

Nobuyuki Nagaoka

Kazunori Ozawa

Hiroaki Ono

Ken Kobayashi

Tadashi Ozue

Hirofumi Kondo

Norio Yokoyama

Seiichi Onodera

Tomoe Sato

Andrew Chakchung Yu

Yutaka Iwamoto

Naoya Komada

Hiroshi Yatagai

Nakaharu Seki

A battery separator includes a porous base material and a heat-resistant layer. The porous base material includes a first surface, a second surface opposed to the first surface, and a hole. The hole is formed in the porous base material and causes the first surface and the second surface to communicate with each other. The heat-resistant layer is configured to cover at least the first surface and a surface of the hole. The heat-resistant layer is formed of an inorganic material and deposited by an atomic layer deposition method.

Battery separator, method of manufacturing a battery separator, battery, battery pack, and electronic apparatus

A barrier film includes a base which is formed of a plastic film having a first surface and a second surface opposed to the first surface, a first barrier layer which is formed on the first surface by an atomic layer deposition method and is made of an inorganic material having a water vapor barrier property; and a second barrier layer which is formed on the second surface by an atomic layer deposition method and is made of an inorganic material having a water vapor barrier property.

Barrier film and method of manufacturing the same

The present invention provides a lubricant capable of holding an excellent lubricating property under various types of service conditions, maintaining a lubricating effect for a long period of time and providing excellent traveling property, abrasion resistance, durability and the like, a recording medium using the lubricant and a carboxylic acid type compound constituting the lubricant. The lubricant is formed by using a carboxylic acid type compound having at least two carboxyl groups and one ester bond as represented by the following general formula (1) (for example, a compound as represented by the following chemical formula (1)) as a constituting mixture and, then, the thus-formed lubricant is allowed to be contained on or in a recording layer of the recording medium: in which Rf represents a non-substituted or substituted, saturated or unsaturated, fluorine-containing hydrocarbon group or hydrocarbon group; Es represents an ester bond; and R may be omitted or represent a non-substituted or substituted, saturated or unsaturated hydrocarbon group.

Lubricant, recording medium and carboxylic acid compound

A magnetic recording medium having at least a thin magnetic metal film and a carbon protective film formed on a non-magnetic substrate, wherein lubricating properties are afforded to a surface portion of the carbon protective film. Specifically, the carbon protective film having a lower layer exhibiting rust-proofing properties and/or an upper layer exhibiting lubricating properties is formed on the thin magnetic metal film. The magnetic recording medium has a good running performance, durability and preservability.

Magnetic recording medium and method for producing same

Described is a magnetic recording medium wherein a thin magnetic metal film is formed as the magnetic layer on a non-magnetic base, and wherein a carboxylic acid perfluoroalkyl ester is coated as the lubricant on the thin magnetic metal film used as the magnetic layer to produce the magnetic recording medium exhibiting good running properties, wear resistance and durability under any operating conditions. The carboxylic acid perfluoroalkyl ester employed as the lubricant in the present invention is a compound represented by the general formula

Magnetic recording medium

A magnetic recording medium consisting of a non-magnetic substrate and a thin film metal magnetic layer is disclosed. The magnetic recording medium carries polyphenyl ether compound having the following formula ##STR1## where n is an integer satisfying the following condition; 2.ltoreq.n.ltoreq.10.

Growing community of inventors

Miyagi, Japan

Takahiro Kawana