Canon Kabushiki Kaisha

Tdk Corporation

Pioneer Electronic Corporation

Dowa Mining Co., Ltd.

Mamoru Satoh

Kiyofumi Chikuma

Atsushi Onoe

Ayako Yoshida

Shizuo Hasegawa

Yuzo Tasaki

A method for manufacturing ferrite powder comprises a step (a) of causing a precursor, obtained by a liquid-phase reaction method, to pass through a sieve with openings of 2 mm or less, and a step (b) of causing free fall, through the interior of a furnace tube heated to the range 750 to 1250&#xb0; C. by a heater, of the precursor which has passed through the sieve. In the process of causing free fall through the interior of the furnace tube heated by the heater, ferrite powder, which is a single phase of hexagonal ferrite, is obtained by heating the precursor to a prescribed temperature and holding the precursor at the prescribed temperature.

Method for manufacturing ferrite powder, ferrite powder, and magnetic recording medium

When a potassium-containing substance is formed in to a film using an organic potassium complex as a potassium source by the CVD method, it is prevented that the film formation rate is changed with the lapse of time, and the potassium content in the film thus formed is changed. As a potassium source for vaporization used for depositing the potassium-containing substance on a substrate by the CVD method, a .beta.-diketone complex of potassium that has been melted by heating to a temperature higher than its melting point and then cooled to be solidified is used.

Potassium-containing thin film and process for producing the same

There is disclosed a long image sensor composed of plural linear image sensors arranged in staggered manner. The plural sensors are independently controlled in timing, thus achieving a larger freedom in the arrangement in the main and sub scanning directions.

Image reading device

Growing community of inventors

Tokyo, Japan

Mamoru Satoh