Tdk Corporation

Other

Duracell, a Division of the Gillette Company

Shigeo Kurose

Tadayoshi Iijima

Tetsuya Takahashi

Akira Somiya

Hiroyuki Tanaka

Koji Kobayashi

Masatoshi Nakayama

Kunihiro Ueda

Mitsuru Takai

Kiyotaka Okuyama

Akihiko Seki

Kiminori Tamai

Chieko Yamada

Katsuhiko Yamazaki

Koichi Hikida

Yoshihiro Honjo

Kenji Shirasuna

Kesao Okada

Hideki Sasaki

Kiyonori Hinoki

Ignacio Chi

George M Cintra

Yukinori Hato

Kiyoto Fukushima

David V Adamson

Karthik Ramaswami

Masami Hara

Satoshi Nagura

George Cintra

A transparent conductor includes a film-shaped or plate-shaped support and a transparent conductive layer that is disposed on the support and has a surface formed as a rough surface. The surface of the transparent conductive layer is formed so that a maximum peak height that shows a surface roughness of the surface is in a range of 0.35 &#x3bc;m to 0.43 &#x3bc;m, inclusive.

Touch panel that uses transparent conductor

A magnetic recording medium is provided, in which a high recording density is realized, and an electromagnetic transducing characteristic and an error rate are improved. The magnetic recording medium includes a non-magnetic layer containing a non-magnetic powder and a binder resin and a magnetic layer containing a ferromagnetic metal powder or hexagonal ferrite magnetic powder and a binder resin on one surface of a non-magnetic support, wherein the ferromagnetic metal powder has an average long axis length of 80 nm or less, or the hexagonal ferrite magnetic powder has an average tabular diameter in the range of from 10 to 40 nm, the three-dimensional center surface average roughness of the magnetic layer surface is 3.0 nm or less in a region of 100 &#x3bc;mbased on a measurement with an atomic force microscope, and the area share held by asperities of at least &#xb1;5.0 nm with reference to the surface at an average height is 15 percent or less in a region of 100 &#x3bc;mon the magnetic layer surface.

Magnetic recording medium

A magnetic recording medium is provided, in which a high recording density is realized, and an electromagnetic transducing characteristic and an error rate are improved. The magnetic recording medium includes a non-magnetic layer containing a non-magnetic powder and a binder resin and a magnetic layer containing a ferromagnetic powder and a binder resin on one surface of a non-magnetic substrate, the non-magnetic powder contains a non-magnetic inorganic powder having an average particle diameter of 80 nm or less, the three-dimensional center surface average roughness of the magnetic layer surface is 3.0 nm or less in a region of 100 &#x3bc;mbased on a measurement with an atomic force microscope, and the area share held by asperities of at least &#xb1;5.0 nm with reference to the surface at an average height is 15 percent or less in a region of 100 &#x3bc;mon the magnetic layer surface.

Transparent conductor

A magnetic recording medium contains a non-magnetic substrate, a non-magnetic layer arranged on or above one side of the non-magnetic substrate and containing a non-magnetic powder, a carbon black and a binder resin, and a magnetic layer being arranged on or above the non-magnetic layer and containing a ferromagnetic powder and a binder resin, in which the binder resin of the non-magnetic layer contains an electron-beam-curable resin having an adsorption with respect to the non-magnetic powder of less than 2.2 mg per square meter in terms of a specific surface area determined according to a BET method. The magnetic recording medium can carry out high-density recording and exhibits improved electromagnetic conversion properties and a reduced error rate.

An electron beam curing resin for a magnetic recording medium is provided, wherein a known thermosetting vinyl chloride resin or polyurethane resin is modified to become sensitive to an electron beam, and the resulting resin has a high cross-linking property. A method for readily manufacturing the above-described electron beam curing resin from a known thermosetting resin is provided. Furthermore, a high-performance magnetic recording medium including the above-described electron beam curing resin is provided. The electron beam curing resin is produced through a reaction between active hydrogen groups of a vinyl chloride resin or polyurethane resin having the active hydrogen groups in a molecule and a compound having an isocyanate group and a radical-polymerizing unsaturated double bond in a molecule, wherein the amount of water in the reaction system is controlled at 0.05 to 0.5 percent by mass relative to the resin when the reaction is effected.

Electron beam curing resin for magnetic recording medium, method for manufacturing the same, and magnetic recording medium including the same

A high density magnetic recording medium having improved dispersibility in a non-magnetic layer, excellent surface properties, electromagnetic conversion properties and durability is provided. The magnetic recording medium comprises a non-magnetic substrate, a non-magnetic layer disposed on the non-magnetic substrate, and a magnetic layer disposed on the non-magnetic substrate via the non-magnetic layer containing at least carbon black and a radiation curing type binder, wherein the radiation curing type binder contains a radiation curing type polyurethane resin having both a basic polar group and a sulfur-containing polar group in a molecule. The basic polar group is preferably an amino group, and the sulfur-containing polar group is preferably a sulfonic metal basic group.

An electrolyte for a nonaqueous electrolyte battery having improved charge and discharge characteristics such as discharge capacity and charge/discharge cycle life and the like. The electrode comprises an electrode active material layer including at least a positive electrode active material, a conductive agent and a binder. The crushed, expanded graphite is used as the conductive agent. The crushed expanded graphite preferably has a median particle diameter of 0.1 to 40 &mgr;m. The quantity of the conductive agent in the electrode active material layer is preferably 0.1 to 15% by weight.

Electrode for nonaqueous electrolyte battery

Magnetic recording medium and process for producing the same

Non-aqueous electrolyte secondary battery including positive and negative electrodes

Method of producing electrode for non-aqueous electrolytic cells including a narrow-gap dispersing process

Method of producing an electrode for non-aqueous electrolytic secondary cells

The present invention provides a magnetic recording medium having a thinned magnetic layer, excellent electromagnetic conversion characteristics and an excellent durability, and a process for producing the same. A magnetic recording medium comprising a lower non-magnetic layer containing at least a carbon black and a radiation curing type binder resin on a non-magnetic support and an upper magnetic layer having a thickness of 0.30 &mgr;m or less on the lower non-magnetic layer, wherein the upper magnetic layer contains at least a ferromagnetic powder, a binder resin and an abrasive having a Mohs hardness of 6 or higher and a smaller average particle size than the thickness of the upper magnetic layer. The thickness of the upper magnetic layer is, for example, 0.05 to 0.30 &mgr;m. The average particle size of the abrasive is, for example, 0.01 to 0.2 &mgr;m.

Process for producing a magnetic recording medium

An active material having a composition of Li Ni M O (0.8<x<1.5, 0.8<y&plus;z<1.2, 0&lE;z<0.35; M is an element selected from Co, Mg, Ca, Sr, Al, Mn and Fe) is preserved in a gas having a moisture dew point of &minus;20&deg; C. or less from immediately after production of said active material till preparation of an active material mixture-coating material, or is subjected to vacuum drying immediately before preparation of said active material mixture-coating material. The prepared mixture-coating material is applied onto a collector.

Method of producing an electrode for non-aqueous electrolyte battery

This invention is a method for producing an electrode for a non-aqueous electrolytic cell, in which a collector is coated with an electrode active material layer comprising an active material, flake graphite and a binder, which is characterized by that the graphite is subjected to a pulverization process twice or more, followed by mixing and pulverization using the active material, and provides an electrode for a secondary cell which is good in charge and discharge characteristics such as discharge capacity and charge and discharge cycle life, and improved in physical characteristics.

Method of producing an electrode for non-aqueous electrolytic cells

Growing community of inventors

Tokyo, Japan

Shigeo Kurose