Ricoh Company, Ltd.

Nobuaki Toyoshima

Hiroshi Miura

Manabu Seo

Takahiko Matsumoto

Yoshitaka Hayashi

Junichi Takahashi

Daisuke Arai

Hidekazu Yaginuma

Daisuke Takagi

Kohji Takeuchi

Satoshi Izumi

Noriyuki Iwata

Suguru Sangu

Ikuo Katoh

Hiroki Somada

Ryuya Mashiko

Yusuke Nonoyama

Koichi Kudou

Yunong Ji

A particle counting apparatus is provided that includes: a droplet discharger configured to discharge a droplet containing at least one luminescent particle capable of emitting light upon receiving light; a light irradiator configured to irradiate the droplet discharged by the droplet discharger with light; at least one light receiver configured to receive light emitted by the at least one luminescent particle irradiated with the light emitted by the light irradiator; and circuitry configured to count luminescent particles contained in the droplet based on the light received by the at least one light receiver, the circuitry being configured to measure a presence or absence of the luminescent particles contained in the droplet; and to measure a number of the luminescent particles contained in the droplet.

Particle counting apparatus, particle counting method, and particle containing sample

It is an object of the present invention to provide an optical recording medium containing a laminated structure of a first deformable material layer containing a phase-change material that absorbs light at a recording wavelength to generate heat and is subject to exothermic melting and deformation and a second deformable material layer containing a material which contains a silicon oxide (SiOx; 0&#x3c;x&#x2266;2) that transmits light and is subject to thermal deformation and alteration. After information is recorded, the thickness of the first deformable material layer is changed according to the recorded information making center of the recorded marks thicker than the ends and the second deformable material layer is deformed and altered corresponding to the concave-convex-pattern formed on the first deformable material layer based on the recorded information and when the information is reproduced, the first deformable material layer is altered from solid to molten state.

Optical recording medium and recording and reproducing method using the same

A method for producing a conductive oxide-deposited substrate including depositing a conductive oxide thin film over a substrate, subjecting the conductive oxide thin film to heat treatment by irradiating with a condensed laser beam so as to be thermally changed in part, and subjecting the conductive oxide thin film to etching treatment so as to remove a part which has not been thermally changed, wherein the conductive oxide thin film absorbs the laser beam, and at least a part of the conductive oxide thin film is an amorphous phase.

Conductive oxide-deposited substrate and method for producing the same, and MIS laminated structure and method for producing the same

An optical information recording/reproducing apparatus enabling fine actuation of almost several nm order for performing the tracking correction includes a pair of fixed electrodes so as to put a probe therebetween in a direction perpendicular to the direction of data row arrangement on a recording medium and a voltage applying medium for applying the voltage between the respective fixed electrodes and the probe. The position of the tip end of the probe is controlled by the action of electrostatic attractive force between the fixed electrodes and the probe caused by applying the voltage thereacross. The probe is constructed with center core clad therearound. The base part is fixed and the sharpened tip end is free, as a so-called cantilever structure. The apparatus further enables to obtain the tracking error. Laser light is emitted from the tip end and radiated onto the information recording medium. The light reflected on the recording medium is converted optoelectrically. The average value of the electric signal is outputted as the tracking error signal. An information recording/reproducing apparatus capable of improving the stability of the control voltage for tracking the probe includes control voltages and bias voltage applying members respectively independent from each other.

Optical information recording and reproducing apparatus

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Yokohama, Japan

Nobuaki Toyoshima