摘要:
There are provided a method of modulating a photo-modulation layer correspondingly with an electric field applied thereto by applying an alternating electric field to a semiconductor layer disposed adjacent to the photo-modulation layer to vary a thickness of a depletion layer thereof responsive to the alternating electric field and applying the electric field to the photo-modulation layer while the alternating electric field is applied to the semiconductor layer and varying the thickness of the depletion layer, and a system for reproducing a charge latent image recorded in a recording medium which has at least a charge hold layer holding the charge latent image comprising a photo-modulation layer disposed adjacent to the recording medium so as to be subjected to an electric field generated by the charge latent image held on the charge hold layer, a semiconductor layer disposed adjacent to the photo-modulation layer, the semiconductor layer having a depletion layer which has a capacitance variable in response to an applied varying electric field, means for applying the varying electric field to the semiconductor layer for varying the capacitance of the depletion layer thus subjecting the electric field generated by the charge latent image being applied to the photo-modulation layer and means for projecting a reading light passing through the photo-modulation layer and for detecting modulation of the reading light passed therethrough.
摘要:
There is provided a photoelectric conversion device for an electro-magnetic radiation beam incident thereto, into a charge pattern, the electro-magnetic radiation beam carrying information intended to be recorded. The device has electrodes, a photo-conductive layer member laminated to the electrodes having maximum thickness and a surface defining the maximum thickness between the electrodes, and a gap defined between the surface and a recording member disposed to face the surface of the photo-conductive layer member. There is further provided an apparatus for recording a charge latent image without losing the high resolution. The apparatus has a photoelectric conversion device having an electrode and a photo-conductive layer member on which the charge latent image is generated by projecting an optical image carrying information signals to the photo-conductive layer member, and a recording member having an electrode and a charge holding layer member facing the photo-conductive layer member to form a gap therebetween. A predetermined voltage is applied between the electrodes of the photoelectric conversion device and the recording member to transfer the charge latent image to the charge holding member by spark discharge.
摘要:
A charge latent image recording medium includes an electrode, a dielectric member, a member suppressing a transfer of charges, and a photoconductive member laminated in the order without any gaps therebetween. A system for reading a charge latent image recorded in a recording member includes means for projecting a first electromagnetic radiation beam along a path extending to the recording member, means projecting a second electromagnetic radiation beam approximately along the path for reading the charge latent image, guiding means disposed in the path changing electric resistance thereof along the path threthrough, in response to the first electromagnetic radiation beam projected thereto, for guiding an electric field of charges of the charge latent iamge.
摘要:
A charge latent image is formed on a recording medium in response to information and a reference pattern so that the information and the reference pattern are recorded on the recording medium. During a reproducing process, the information is read out from the recording medium and an information signal representing the readout information is generated. In addition, the reference pattern is read out from the recording medium and a reference signal representing the reference pattern is generated. The information is demodulated from the information signal. The reference signal is used in the demodulation of the information from the information signal.
摘要:
A image pickup device having a rewritable recording member on which optical patterns are repeatedly recorded as electrostatic images using a writing head with an electric potential applied between the head and recording member. Each image recorded on the recording member is erased prior to recording a subsequent image by application of an alternating voltage or an electric potential of opposite polarity between the writing head and recording member.
摘要:
There is provided an image pickup device having a high resolution used for a movie camera, a still camera (shutter) camera) and the like. This image pickup divice includes a photo-to-photo conversion element (PPCE) comprising at least a photoconductive layer member, a dielectric mirror and an optical modulation layer member disposed between two transparent electrodes, a first image formation elements for forming an optical image of an object on said photo-to-photo conversion element, a second image formation elements for scanning, in two direction substantially perpendicular to each other, optical image information corresponding to said optical image of said object using a light from said photo-to-photo conversion element to read it out, and for changing the light beam reading out said optical image information to a scanning light beam, a canning locus of which on a plane becomes a line, and recording medium transportation mechanism for allowing a recording surface of a recording medium to be located on said plane where a linear image of said optical information is formed, and for continuously moving said recording medium in a direction having an angle with respect to said line of the scanning locus.
摘要:
A reproducing apparatus which reproduces a charge latent image recorded in a recording medium. The apparatus has an electromagnetic radiation source, an optical system for leading an electromagnetic radiation ray emitted from the electromagnetic radiation source in a direction toward a recording medium on which an object information to be read is prerecorded as a charge latent image, and a read head arranged closely facing to the recording medium and arranged in series in a travelling path of the electromagnetic radiation ray. The read head is of a multilayer structure comprising a support base plate, a photo modulation material layer for generating a mode modulation of said electromagnetic radiation ray which passes the photo modulation material layer therethrough in response to intensity of an electric field by said charge latent image, and an electrode for applying a predetermined electric field to said photo modulation layer, and for allowing to receive the electromagnetic radiation ray in a read wavelength range and transmit thereof to the photo modulation layer, an output surface facing to a processor for emitting thereto the electromagnetic ray having passed through the electrode and the photo modulation layer, said processor processing the electromagnetic ray modulated by going through the photo modulation material layer and outputted from the output surface.
摘要:
In a printing apparatus, there are provided a transfer drum having a charge storage layer and an electrode provided on one side thereof, a printing head having a photoconductive layer provided at the other side thereof, a transparent electrode provided on the photoconductive layer such that the photoconductive layer and the charge storage layer are interposed between the transparent electrode and the electrode, a beam applying device for applying a constant laser beam to the photoconductive layer from a side of the transparent electrode, a printing signal applying device for applying a printing signal between the transparent electrode and the electrode, developing device for developing the charge pattern, and photographic fixing device for fixing the developed charge pattern on a piece of paper. Since the charge storage layer on a transfer drum is provided apart from the photoconductive layer, the laser printer has a simple structure, and can be presented with low cost.
摘要:
A photo-to-photo conversion element is disclosed. The element has, in an arranged sequence in line: a first optical member having a wavelength selectivity permitting passage of a write light having a first wavelength range and blocking an erase light; a first transparent electrode; a photoconductive layer; a second optical member having a wavelength selectivity permitting reflection of a read light having a second wavelength range and passage of the erase light; a third optical member for electrooptically modulating a light incident thereto through the second optical member in response to the strength distribution of an electric field applied thereto; and a second transparent electrode. The erase light has a wavelength outside of both the first and second wavelength ranges.
摘要:
An apparatus for detecting a distribution of a surface potential on a measured object comprises a reading head opposing the measured object. The reading head includes an optical modulator subjected to an electric field representative of the surface potential distribution. The electric field applied to the optical modulator is varied in an alternating manner.