Tokin Corporation

Nagano Keiki Seisakusho, Ltd.

Masakazu Abe

Tadashi Omiya

Toshiyuki Igarashi

Naohiko Maruno

Hiroyuki Yoshida

Tetsuo Ogawa

Masahiko Fuji

Tetsuo Ito

An adhesive tape has a noise reduction function. The adhesive tape comprises a main member having a front surface and a back surface, and an adhesive layer provided on the back surface of the main member. The main member comprises a magnetic sheet and a uniaxially oriented film laminated on the magnetic sheet. The magnetic sheet contains a binder and magnetic particles distributed in the binder. The magnetic sheet solely has breaking strength of 2.5 N/5 mm or more but 40 N/5 mm or less, and elongation at break of 25% or less.

Adhesive tape and tape roll

A composite magnetic material comprises spherical soft magnetic metal powder incorporated in the composite magnetic material in a dispersed manner, a flame retardant incorporated in the composite magnetic material in a dispersed manner; and a binder configured to bind the soft magnetic metal powder and the flame retardant. The composite magnetic material is formed and processed into a sheet shape. The composite magnetic material has a volume occupancy of the soft magnetic metal powder of 45 vol % or more and 68 vol % or less.

Composite magnetic material, electrical and electronic device, and method of manufacturing composite magnetic material

A method of manufacturing a magnetic member comprises preparing a base member, which have a front surface and a back surface, and wherein an anchor coat layer is formed on the front surface, and forming a composite magnetic layer on the anchor coat layer.

Method of manufacturing magnetic member and the magnetic member

Provided is a composite magnetic body composite magnetic body including a flaky metallic soft magnetism powder with a volume content of 35% or more and 55% or less, wherein the composite magnetic body is characterized by further including a phosphazene compound, a binder resin, and a phosphorus-free flame retardant auxiliary so that equations (1) and (2) are satisfied:0.17&#x2264;&#x2264;0.21&#x2003;&#x2003;(1)0.89&#x2264;(+RA)/&#x2264;2.71&#x2003;&#x2003;(2)(In the equations, PN denotes the mass % of the phosphazene compound in the composite magnetic body, RA denotes the mass % of the flame retardant auxiliary in the composite magnetic body, B denotes the mass % of the binder resin in the composite magnetic body, and P denotes the mass % of phosphorus in the composite magnetic body.) The composite magnetic body can impart high flame retardancy without losing performance such as magnetic permeability.

Flame-retardant composite magnetic body

A gas pressure transducer has a voltage stabilizer for supplying a piezoelectric crystal in a gas with an AC constant-voltage signal corresponding to an applied AC signal and having a constant peak amplitude. An alternating output current from the piezoelectric crystal is converted by a current-to-voltage converter into an AC voltage, which is shifted in phase by a phase shifter so that the impedance of the piezoelectric crystal is minimal or nearly minimal under the resonant condition. The shifted AC voltage is then applied to the voltage stabilizer. The piezoelectric crystal, the voltage stabilizer, the current-to-voltage converter, and the phase shifter jointly constitute a self-excited oscillation loop. Since the amplitude of the AC voltage from the current-to-voltage converter is uniquely dependent on the pressure of the gas, the gas pressure can be known from a DC voltage produced by rectifying the AC voltage.

Growing community of inventors

Tokyo, Japan

Masakazu Abe