Tosoh Corporation

Keiichiro Nishizawa

Toru Futami

Akira Kawai

Koji Katayama

Noriaki Oshima

Koyata Takahashi

Tomohiro Ohkawa

Hideki Oono

Tomoyuki Oikawa

Toshio Inase

Katsuyuki Hara

Hideaki Kiriya

Koji Kitayama

Hirotatsu Kusakabe

Shinichi Kondo

Tsuyoshi Tanaka

Kenichi Sekimoto

Toshinori Hayashi

Hideaki Segawa

Takashi Taniguchi

Tatsuo Kawasaki

A fine channel device capable of producing fine particles in an industrial scale, hardening the fine particles immediately after the production and recovering the fine particles from a medium without collapsing the shape of the produced fine particles, a fine particle producing method using the fine channel device and a solvent extraction method using the fine channel, are presented. The fine channel device comprises a fine channel provided with an inlet port and an inlet channel which feed a dispersion phase, an inlet port and an inlet channel which feed a continuous phase, and an outlet channel and an outlet port which discharge fine particles produced by the dispersion phase and the continuous phase, wherein the inlet channel for feeding the dispersion phase and the inlet channel for feeding the continuous phase are joined at an arbitrary angle, and the two inlet channels are connected to the outlet channel at the arbitrary angle.

Fine channel device, fine particle producing method and solvent extraction method

A fine channel device including a fine channel provided with at least two inlet ports for feeding fluid, inlet channels communicated with the inlet ports, a confluent portion communicated with the inlet channels, a branch portion communicated with the fine channel, from which at least two outlet channels are branched to feed predetermined amounts of fluid, and outlet ports communicated with the outlet channels. The fine channel is provided with a plurality of partition walls arranged along a boundary formed by at least two kinds of fluid fed from the inlet ports so as not to cause mutual contamination of fluid. Furthermore, the plurality of partition walls are spaced apart at intervals in a flowing direction of fluid.

Fine channel device and a chemically operating method for fluid using the device

A device includes a first substrate having a channel formed on front and rear surfaces of the first substrate, and an information recording layer forming an optical recording medium on at least one of the front and rear surfaces of the first substrate.

Fine channel device, method for producing the fine channel device and use of the same

An optical recording medium comprising at least a land and a groove where information-recording/reproducing is carried out by a flying type optical head, The optical recording medium keeps the flying height of the flying optical head constant in the entire region of the recording/reproducing area, and is provided with at least one characteristic among the following characteristics: RP which is dependent on land and groove parameters and the flying height satisfies the relation of H&#x3e;Rp 0.1 H; centerline mean roughness Ra is in the range of 0.2 nm Ra 2.0 nm, and the layer thickness of a liquid lubricant layer satisfies the relation of t Ra; the relation of &#x394;Rp&#x2266;&#x3bb;/16 NA which is dependent on the effective numerical aperature, laser wavelength and surface parameters is satisfied where all parameters in the formula are defined in the specification; and the height of a header area is different from the height of a land portion.

Optical recording medium

An optical recording medium with a circular body including a substrate, a recording layer and a dielectric layer on the substrate, the circular body having a recording/reproducing area and a hub attached to a surface of the circular body. When the circular body stands vertically, the recording/reproducing area of the hub-attached surface is curved in a convex form, and the flexural amount is from 5 &#x3bc;m to 100 &#x3bc;m.

Optical recording medium having in a static mode, a flexible region extending to 1/3 of the recording area

A near field optical recording medium having a header area in which at least an addressing signal or a timing signal is recorded by means of a concave/convex pattern with laser light using a flying optical head. When a concave/convex portion of the concave/convex pattern is to be detected, either an effect due to a change in returning light caused by distance wherein the reflectance is changed or an effect due to a change in returning light caused by a diffraction effect is sufficiently larger, or a combination of such effects (changes by distance effect and changes by diffraction effect) are not weakened by each other, so that header information recorded by the concave/convex pattern can correctly be reproduced even in a super-high density recording medium using near field light.

Near field optical recording medium

Disclosed are magneto-optical recording media including at least a reflection layer, a recording layer and a dielectric layer laminated on a substrate in this order, wherein the thickness of the dielectric layer is not less than 140 nm or wherein the dielectric layer is provided by the lamination of upper dielectric layer and lower dielectric layer in which the thermal conductivity of the upper dielectric layer is higher than that of the lower dielectric layer. By arranging the thickness of the dielectric layer in a specific range, the surface roughness of a media in not more than 1.5 nm, and providing a reflection layer composed of a noble metal alloy, achieved is a magneto-optical recording medium able to record constantly in near-field magneto-optical recording, suitable for narrow track pitch, and having excellent SNR, resolution, and recording sensitivity.

Magneto-optical recording medium

An information measuring apparatus having a fine channel device comprises at least one detector for measuring information supplied from a plurality of measuring portions formed in the fine channel device, a position-holding/determining means for holding and positioning the fine channel device, a rotating means for rotating the fine channel device at a predetermined angle, a position-determining means for positioning the measuring portion and the detector, wherein information supplied from the measuring portions in the fine channel device is measured successively by rotating the fine channel device at the predetermined angle, whereby information from the measuring portions is stably and efficiently measured.

Information measuring apparatus using a fine channel device

An optical recording medium wherein a land and a groove are formed in both front and rear surfaces of a circular disk-like substrate respectively, at least a recording layer and a dielectric layer are formed on the surfaces of the substrate, and a hub is provided in only one of the surfaces and recording/reproducing are conducted by using a flying optical head, the optical recording medium being characterized in that in a state that the medium is supported by the hub so that the hub-attached surface directs downward, and in a region from the innermost periphery to L/3, where L is a distance from the innermost periphery to the outermost periphery of a recording/reproducing area, the center of curvature in a radial direction of that region exists at an opposite side with respect to the hub-attached surface of the optical recording medium, whereby the optical recording medium of high reliability wherein the distance between the flying optical head floating above the surface of the recording medium and the surface of the recording medium can be kept constant; uniform recording/reproducing signals can be obtained, and head crushing seldom occurs.

Optical recording medium having a recording/reproducing area with a shaped region

Surface-side reproduction type optical recording medium

High-hardness silica glass having transparency substantially on the same level as silica glass and a Vickers hardness of 12-20 GPa is produced by covering silica glass with powder and treating the silica glass at a temperature of 1400.degree.-2500.degree. C. and a pressure of 10-300 MPa in an atmosphere of an inert gas or a nitrogen gas.

Growing community of inventors

Kanagawa-ken, Japan

Keiichiro Nishizawa