Teac Corporation

Ube Material Industries, Ltd.

Tdk Corporation

Taiyo Nippon Sanso Corporation

Onoda Cement Co., Ltd.

Tanashin Denki Co., Ltd.

Onada Cement Co., Ltd

Onada Alc Co., Ltd.

Onoda Alc Co., Ltd.

Takashi Watanabe

Nobuhiko Fujimura

Kazuhiko Suzuki

Kazuhiko Inoue

Yo Kamei

Kazuo Yokota

Kenji Matsumoto

Yoshio Hirose

Hideaki Takahashi

Fumio Okada

Koichi Tsukiyama

Chiharu Wada

Keitaro Kunugiza

Koichi Tsutsumi

Satoshi Teramura

Katsuhiko Noda

Satoru Inoue

Nobuki Matsui

Takayuki Watanabe

Yoshiaki Sakai

Yoshio Ishihara

Taku Sato

Ken Ishino

Taro Miura

Takao Akiba

Masashi Katsumata

Takashi Kishimoto

Shinichi Yamamoto

Katsumasa Suzuki

Kaoru Sakoda

Yojiro Ichimura

Hiroshi Takemoto

You Kamei

Osamu Misumi

A fine powder of an alkaline earth metal carbonate selected from the group consisting of barium carbonate, strontium carbonate and calcium carbonate, in which a primary particle of the powder has a mean diameter of 30 to 90 nm, in which the mean diameter is measured on a circle obtained from a projected area of the primary particle, and in which an accumulated volume of micropores having a pore size in the range of 10 to 20 nm is not less than 5&#xd7;10cm/g can be easily dispersed in an aqueous medium in the form of essentially primary particles by an industrially employable dispersing method.

Highly dispersible fine powder of alkaline earth metal carbonate

A disk device includes a disk moving mechanism for moving a disk between loading and unloading positions. There is a reader/writer for recording or playback of data with the disk in the loading position. In the disk device, a housing includes a main containing region, having a first base wall, for containing the reader/writer. An intermediate containing region is disposed to extend from one side of the main containing region, for partially containing the disk moving mechanism, the intermediate containing region having a second base wall positioned higher than the first base wall, for space saving below. A peripheral containing region is disposed to extend from one side of the intermediate containing region, for containing a portion of the disk protruded from the intermediate containing region, the peripheral containing region having a third base wall positioned higher than the second base wall, for space saving below.

Disk device for loading of disk

Optical disc recording device

A granular material having a high strength and a large BET specific surface area composed of porous particles comprising calcium oxide and calcium hydroxide wherein the calcium oxide is contained in an amount of 30 to 80 weight % based on a total amount of the calcium oxide and calcium hydroxide and the porous particles have a BET specific surface area of 40 m/g or more, or composed of porous particles comprising calcium oxide, magnesium oxide, calcium hydroxide, and magnesium hydroxide wherein a ratio of an amount of magnesium to a total of an amount of calcium and an amount of magnesium is in the range of 0.05 to 0.80, a total hydroxide content in the whole particles is in the range of 1 to 20 weight % and the porous particles have a BET specific surface area of 50 m/g or more.

Granular material comprising porous particles containing calcium and/or magnesium

In a disk device, a case includes a base frame and a top panel, which are made of thin metal plates. In the top panel, a corrugated section is formed to increase its rigidity. The corrugated section has peaks and valleys that are alternately arranged. The peaks and valleys extend in a direction orthogonal to a disk loading direction to the vicinity of both side ends of the top panel.

Disk device

A disk unit includes a tray including a turntable to which a disk-like recording medium is attached, a tray guide mechanism supporting the tray so that the tray is movable between a disk-replacing position and a disk-loading position, and a cover formed to cover the disk-like recording medium when the tray is moved to the disk-loading position. The cover comprises a guide support part supporting the tray guide mechanism.

Low-profile disk unit

The present invention is directed to a disk drive apparatus in which a disk tray travels forward or backward in a chassis casing to load or unload the disk tray. The chassis casing is constructed with a base chassisand/or cover chassishaving openings located in alignment corresponding to the vertical peaks of the disk tray as the disk tray travels through the chassis casing with thin portions provided at the front end of the openings to enclose the openings.

Disk drive apparatus

A disk clamp apparatus, includes a disk mount surface part on which a record medium having a disk shape is mounted, the disk mount surface part including a part which faces an innermost circumference surface of the record medium, and a part which faces an outer circumference surface situated further out than the innermost circumference surface, wherein the part which faces the innermost circumference surface of the record medium has a same height as a height of the part which faces the outer circumference surface situated further out than the innermost circumference surface.

Disk clamp apparatus

A disk unit includes a tray having one side portion thereof cut off so that a disk placed on the tray has a portion protruding therefrom, a housing which the tray is inserted into or ejected from, and an air current control member having a curved surface. The housing includes a first portion for housing the tray and a second portion for covering the protruding portion of the disk. The air current control member is provided in the second portion of the housing so as to have the curved surface opposing a peripheral edge of the disk moved into the housing.

Downsized disk unit with reduced noise

A disk apparatus which can prevent a disk from being damaged when a shock is applied to the disk apparatus is provided. A disk is rotatably supported in a space formed between a tray and a cover when the disk is loaded in the disk apparatus. A contacting member is provided in the space so that the contacting member contacts an outermost annular area of a surface of the disk when the disk is warped. The outermost annular area is a non-recordable area which is adjacent to a rim of the disk.

Disk apparatus having a contacting member contacting an outermost area of a disk for protecting the disk from damage due to a shock

A disc device has a movable mechanism used for moving a carriage carrying a disc so that the carriage either projects from an apparatus or is inserted into the apparatus. The disc carried by the carriage is exposed for an operator to handle the disc when the carriage projects from the apparatus. The disc carried by the carriage is contained in the apparatus after the carriage has been inserted into the apparatus. A rotating unit rotates the disc carried by the carriage and an accessing unit accesses the disc carried by the carriage. The disc device is incorporated into the apparatus. A locking mechanism locks the carriage in the apparatus, and a releasing unit causes the locking mechanism to release locking of the carriage in the apparatus. The releasing unit causes the rotating unit to stop rotating of the disc and also causes the accessing unit to stop accessing the disc, prior to each time the releasing unit causes the locking mechanism to release locking of the carriage in the apparatus. The locking mechanism is contained in the carriage.

Disc device having a chassis and movable tray part including a turntable

A disk device includes a chassis having a printed circuit board provided therein. A moving unit on which a recording disk is held has a sub-chassis and electrical parts on the sub-chassis, the moving unit being movably supported on the chassis so that the moving unit is movable between an inserted position and a disk-change position in an insert direction and an eject direction. A first connector is arranged on the sub-chassis of the moving unit, the first connector being electrically coupled to the electrical parts of the moving unit. A flexible printed circuit cable has a first connector portion fitted to the first connector so that the electrical parts of the moving unit are electrically connected to the printed circuit board of the chassis, the first connector portion being arranged under the sub-chassis of the moving unit.

Disk device having a flexible printed circuit cable providing a

Disc device with a turntable being able to extend into an opening in a

Disc device having a turntable being able to extend into an opening in a

A disk unit includes a tray and a slide-restricting member. The tray conveys a disk between a disk-driving position positioned inside a chassis and a disk-exchanging position positioned outside the chassis. The slide-restricting member is provided between the tray and the chassis in a slidable manner and is engageable with a coupling part formed in at least one of the tray and the chassis to restrict the tray from moving beyond the disk-exchanging position when the tray is extracted and arrives at the disk-exchanging position. Further, the slide-restricting member is movable between a first position positioned in a backward direction from a rear-end part of the tray and a second position positioned in a forward direction from the rear-end part of the tray.

Disk unit having a slide-restricting member for easy disk-exchanging

Growing community of inventors

Ichikawa, Japan

Takashi Watanabe