Victor Company of Japan, Limited

Atsushi Nakano

Toshio Konno

Tadayuki Shimada

Shigeo Shimizu

Itsuo Takanashi

Takashi Yamamura

Shintaro Nakagaki

Hiroki Kitamura

Masanobu Shigeta

Toshikatsu Ichitou

Toshikatsu Ichito

Dai Imanishi

Koubun Sakagami

Nozomu Okochi

Yasutaka Fukuda

A charge image recording medium (RM) comprising a lamination of an electrode (E) and at least one of a light-modulation material layer (PMLQ) and an insulating polymer film or dielectric layer (IL), wherein said light-modulation material layer (PMLQ) comprises a polymer-dispersed liquid crystals film comprising a liquid crystal dispersed in a polymer. The insulating polymer film (IL) may be provided thereon with a thin film (CL) of a fatty acid or a thin film (CL) of a metal salt of a fatty acid. The light-modulation material layer (PMLQ) comprising a polymer-dispersed liquid crystals film comprising a liquid crystal dispersed in a polymer may also be provided thereon with a thin film (CL) of a fatty acid or a thin film (CL) of a metal salt of a fatty acid.

Charge image recording medium

An information recording medium includes a first transparent electrode, and a carrier transport layer formed on the first transparent electrode for generating an electric current on the basis of fed carriers. A carrier generation layer formed on the carrier transport layer serves to generate carriers corresponding to a distribution of an intensity of incident information-writing light containing information, and serves to feed the generated carriers to the carrier transport layer. An electric power supply electrically connected to the first transparent electrode serves to generate an electric field corresponding to the distribution of the intensity of the incident information-writing light in cooperation with the carrier transport layer and the carrier generation layer. A photo-modulation layer formed on the carrier generation layer serves to record the information in the incident information-writing light in response to an application of the electric field generated by the electric power supply, and serves to modulate applied information-reading light in accordance with the recorded information. The photo-modulation layer is made of a complex member of high-molecule material and liquid crystal. A second transparent electrode is formed on the photo-modulation layer, and is electrically connected to the electric power supply. The carrier generation layer is made of inorganic material. The carrier generation layer may be made of organic material. In this case, a separating layer is provided between the photo-modulation layer and the carrier generation layer.

Information recording medium

A spatial light modulator having first and second electrodes, and a photoconductive layer member, a photo-modulation layer member and a reflecting member interposed between the first and second electrodes. The photo-modulation layer member is composed of a composite layer of polymer and liquid crystal material dispersed in the polymer. The reflecting member includes a light-absorbing layer.

Spatial light modulator of polymer-dispersed liquid crystal

An information recording medium comprising a laminated structure comprising;

A method of electrophotographic printing is disclosed. A recording medium comprising a photoconductive member and photo-modulation member laminated to each other, both exhibiting a photoelectric effect and a sensitized member made of a chargeable photoconductive member are arranged so as to face each other. A first electro-magnetic radiation beam (abbreviated in a beam hereinafter) which is intensity-modulated with data to be recorded is radiated to the recording medium at the photoconductive member side thereof to record the data to the photo-modulation member with the photoelectric effect. A second beam of constant intensity is radiated to the recording medium to emit therefrom a third beam exhibiting intensity variation subjected to the recorded data. The sensitized member is exposed with the third beam to form thereon a charge image corresponding to the recorded data. Toner is stacked onto the sensitized member formed with the charge image to form thereon a toner image. The toner image is then transferred onto a printing paper, thus to perform repeated printing utilizing the data once recorded to the recording medium.

Method electrophotographic printing

A device for detecting a charge latent image on a recording medium includes a photo-modulation member having a composite film of high polymer material and a liquid crystal material dispersed in the high polymer material, preferable liquid crystal material having refraction anisotropy higher than 0.18 and droplet size of less than 0.5 micron.

Charge latent image detecting device

An electrophotography system for use in laser printers, printing machines and copying machines. The system includes a rototable drum having a photosensitive member which can take a first absorption spectrum state and a second absorption spectrum state, the variation from the first absorption spectrum state to the second absorption spectrum state being made by illuminating it with light whose intensity is above a predetermined threshold and whose wavelength is in a first predetermined wavelength region. Also included is an optical system including a light-emitting device for illumination of the photosensitive member so as to form thereon an electrostatic latent image, the optical system being arranged to directly illuminate the photosensitive member with light from the light-emitting device and further to illuminate it with reflected light from an original picture. The light-emitting device is arranged to emit light whose wavelength is in the first predetermined wavelength region and further light whose wavelength is in a second predetermined wavelength region. A control unit performs one selected from a laser-printing mode, a printing mode and a copying mode so as to form the corresponding electrostatic latent image on the photosensitive member by lights which are different in intensity and wavelength from each other.

Electrophotography system

A magnetic disk or like magnetic recording medium having a magnetic layer provided on a non-magnetic substrate by dry-process or wet-process plating means and allowing a head to write and read data thereinto and thereoutof, and a method or producing such a recording medium. Scratch marks are formed on the surface of a non-magnetic thin layer, which is provided on the substrate, at a predetermined pitch and a predetermined depth in a particular direction which is substantially aligned with a direction in which the head writes data. A magnetic layer is deposited on the scratched surface of the non-magnetic layer. The pitch is less than about 50 microns, preferably about 0.1 to 10 microns, while the depth is about 0.002 to 0.1 microns in terms of center line mean roughness.

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Yokohama, Japan

Atsushi Nakano