Matsushita Electric Industrial Co., Ltd.

Teijin Limited

Shigenori Uda

Kazuya Nakamura

Makoto Hasegawa

Taro Kishibe

Hiroyoshi Teshima

Seiji Kurozumi

Kouji Kuyama

Mikio Hirano

Takeo Kimura

Nobuyuki Yamamoto

Shuichi Yamane

Tsuguo Inazawa

Akio Ando

Hiromi Suyama

Yuko Otani

Yukako Nojima

Masaru Kikuya

Masatake Hirai

Katuhiro Murano

Masashi Senoo

Masanori Onda

A turntable device includes a disc base on the circumference thereof, and the disc base has a hardness more than a given level. The surface of the disc base is roughened at a given level in order to prevent the disc from slipping and adhesion to the disc base. The disc base can compensate surface wobble caused by the disc base. A manufacturing method of the turntable device includes the steps of: a) dripping liquid resin mixed with fine particles on the circumference of the turntable; and b) hardening the resin to form the disc base. The turntable device is good for e.g. CD players, optical disc driving apparatuses.

Turntable device and manufacturing method thereof

In order to prevent clouding of a hard disc and a polygon mirror, a tin-free electrodepositing coating composition is used as an insulating coated film of a motor for driving the hard disc and polygon mirror.

Magnetic core coated with tin free electrodeposition coatings

The present invention relates to a film forming method, in which a specified electrodeposition paint composed of at least an emulsion, a gel fine particle dispersion, and a pigment paste is applied by an electrodeposition coating method to an electronic part metal surface having a burr, followed by drying and baking to form an insulating film having an average thickness of 20 to 100 .mu.m.

Method of forming film on electronic part metal surface having burrs

A miniature electric motor having a stator composed of a strip of rubber magnet having a varying width. The stator strip has; polarized regions of wide width, non-polarized regions of narrow width, and regions which bridge said polarized regions having a continuously varying width. The periphery of the polarized and non-polarized regions of the stator strip contains indents and protrusions to improve the cogging characteristics of the motor.

Miniature electric motor with rubber stator magnet

A lining material superior in abrasion-proof, considerably reducing the sliding sounds to be caused at high speeds, and an ultrasonic wave driven motor using the lining material (9) for the inverted face of a rotor (2). The lining material is composed of total aromatic polyamide pulp granule of a meta type and/or total aromatic polyamide fiber of a meta type as main comonents, being 3 through 40% in the percentage of voids. As the lining material (9) is used as the inverted face of the rotor portion (2) which comes into contact against the vibration amplifying portion (5) of the stator portion (1), so that the noises during the driving operation may be reduced, and also, the service life of the inverted face may be extended.

Lining material and ultrasonic wave driven motor using lining material

Growing community of inventors

Osaka, Japan

Shigenori Uda