Victor Company of Japan, Limited

Tadayuki Shimada

Toshio Konno

Shigeo Shimizu

Atsushi Nakano

Masanobu Shigeta

Nozomu Ohkouchi

Hiromitsu Takenaka

Hiroyuki Natsuhori

Dai Imanishi

Shintaro Nakagaki

Itsuo Takanashi

Takashi Yamamura

Toshikatsu Ichito

Masanao Asami

Nozomu Okochi

Kazushige Ohtawara

A spatial light modulator capable of displaying a good contrast and high resolution moving pictures without an after-image effect is disclosed. The modulator comprises a pair of transparent electrodes for generating an electric field therebetween and at least a photoconductive member and a photo modulation member being laminated and interposed between the transparent electrodes, the photoconductive member is a film having a thickness ranged from 10 .mu.m to 30 .mu.m and is made of hydrogenated amorphous silicon doped with boron such that an amount of the boron with respect to silicon in the hydrogenated amorphous silicon in atomic percent is, 0.1 to 1.0 ppm. To enhance the modulator performance, a thickness of the photoconductive member is so selected to have light absorptance ranged 70% to 95% at a wavelength of a writing light which writes information in the modulator.

Spatial light modulator with photoconductor of hydrogenated amorphous

A spatial light modulator capable of providing high contrast ratio and resolution moving pictures without an after-image effect is disclosed. The spatial light modulator comprises a pair of transparent electrodes for forming a driving electric field therebetween, and at least one photo-modulation member and a photoconductive member laminated between the pair of transparent electrodes, where the photoconductive member comprises a hydrogenated amorphous silicon film having thickness of 10 .mu.m to 30 .mu.m, and is doped with boron as such that an amount of the boron in the hydrogenated amorphous silicon film in atomic ratio with respect to silicon therein is 0.1 ppm to 1 ppm.

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

A homeotropic-alignment liquid crystal display device having a high photostability and a high contrast ratio and a method of producing the same are disclosed, wherein while two glass substrates having patterned transparent electrodes are set obliquely at a first angle with respect to an evaporation source, then a first SiO.sub.2 film is deposited on each of the glass substrates while irradiating the glass substrates with an ion beam emitted from an ion gun. Subsequently, the glass substrates are turned in their planes over an angle of 90 degrees and set obliquely at a second angle with respect to the evaporation source, and thereafter, a second SiO.sub.2 film is deposited on the respective first SiO.sub.2 films while irradiating the first SiO.sub.2 film with the ion beam. The first and second SiO.sub.2 films thus deposited on the glass substrates jointly form homeotropic-alignment undercoat films. A homeotropic alignment film is applied to each of the undercoat films, and after that the glass substrates are assembled together via spacers and filled with a liquid crystal.

Liquid crystal display device with homeotropic alignment layer undercoat

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

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.

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Yokosuka, Japan

Tadayuki Shimada