Abstract: A recording apparatus comprises first electrode, color-separation filter, recording, carrier generation, carrier transport, and second electrode layers which are laminated in order of mention. The recording layer and carrier generation layer may be separated at a given space. The recording layer comprises carrier retaining layer or a photo-modulation layer. Light image from an object is projected on the carrier generation layer through the first electrode, color-separation, and recording layers via an object lens enters the carrier generation layer. Carrier generated in the carrier generation layer in response to the light image are transported to the second electrode in response to application of a given voltage between the first and second electrodes. Discharge caused by application of the given voltage transfers a latent carrier image to the recording layer. The first electrode, color-separation filter and recording layers may be used for recording medium.

Abstract: A photo-to-photo transducer is composed by laminating a photoconductive layer member and a photo-modulation layer member including liquid crystals of scattering type each other and disposing the members between two transparent electrodes. The transducer is operated as follows: a specified voltage is applied across the electrodes to operate the photo-modulation layer member in the vicinity of operation threshold level thereof; an electro-magnetic radiation beam for writing information is projected onto the photoconductive layer member through the electrode at the side thereof; and an electro-magnetic radiation beam for reading the information is projected onto the photo-modulation layer member through the electrode at the side thereof, thus the electro-magnetic radiation beam for reading the information is modulated accordingly with intensity of the electro-magnetic radiation beam for writing the information.

Abstract: Color image information is recorded on a recording medium. The recording medium includes a color stripe filter having different-color filter stripes. Marks are provided on the recording medium in correspondence with the filter stripes of the color stripe filter. A detection is given of the marks on the recording medium. During the recording of the color image information, color line sequential signals are recorded on the recording medium. The recording of the color line sequential signals is synchronized with the detection of the marks on the recording medium.

Abstract: 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.

Abstract: An apparatus for processing information carried by an electro-magnetic radiation beam. The apparatus includes a charge holding member for storing a charge latent image, a generator for generating an electro-magnetic radiation beam which is a superimposition of a plurality of electro-magnetic radiation beams with different wavelength ranges, a filter for separating the superimposed beam into the plurality of electro-magnetic radiation beams and a photo-conductive member provided adjacent to the charge latent image holding member and having an impedance which varies according to the intensity of each of the plurality of beams separated by the filter. Charge latent images corresponding to each of the plurality of beams are thus recorded on the charge latent image holding member. The charge latent images thus recorded on the charge latent image holding member are reproduced by means of a photo-modulation member provided instead of a photo-conductive member.

Abstract: There is provided an apparatus for reproducing a charge latent image prerecorded on a recording medium composed of at least a photo-modulation layer and a charge holding layer laminated thereto and holding said charge latent image. The apparatus has two electrodes interposing the recording medium therebetween. The electrodes are connected to each other and one of which is spaced from the recording medium. A reading light is allowed to permeate the photo-modulation layer. The apparatus also has a vibrator which vibrates one of the electrodes to modulate an electric field generated between the electrodes by the charge latent image prerecorded on the recording medium. The reading light is then electro-optically modulated to reproduce the charge latent image.

Abstract: An electromagnetic radiation beam scanning system for scanning an object with an electromagnetic radiation beam. The scanning system comprises first and second beam-narrowing devices which are arranged so as to have elongated light-transmission regions, respectively, and which are overlapped each other so that the light-transmission regions intersect each other. Each of the beam-narrowing devices includes a light modulation layer showing an electro-optic effect, first and second electrodes disposed so as to sandwich the light modulation layer, first and second polarizers disposed so as to sandwich the light modulation layer and a power source for applying voltages to the first and second electrodes. The light modulation layer combined with the polarizers forms the elongated light-transmission region in response to application of the voltages to the first and second electrodes due to the power source so as to produce a narrowed beam when a light beam is incident thereon.

Abstract: A device for recording information on a recording medium as an electrostatic pattern includes a first electrode provided on a surface of the recording medium; a second electrode provided a recording device; a discharging projection formed over the second electrode and projecting towards the recording medium; a field device for developing a an electric field between the first and second electrodes; and a modulator for modulating the electric field correspondingly with the information by discharge caused between the discharging projection and a surface of the recording medium.

Abstract: An apparatus for recording an image information on a recording medium comprises means for charging the recording medium in response to a light from the object; means for forming an effective region and a reference region on the recording medium, the effective region representing the image information, the reference region being charged to a reference potential; a sensing head sequentially detecting surface potentials in the effective region and the reference region of the recording medium through electrostatic induction, the sensing head comprising field effect transistor means; a gate input capacitance of the gate means fo the transistor means being charged by a leakage current between the drain means and the gate means of the transistor means; means for subjecting the gate means of the transistor means to a voltage electrostatically induced in correspondence with the surface potentials in the effective region and in the reference region of the recording medium; means for discharging a charge in the gate inp

Abstract: 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

Abstract: There is provided a method for transferring a charge image wherein the charge image is formed on a surface of the master recording medium and a reproduction member is brought to contact with the surface of the master recording medium, the reproduction member being a laminated structure of photomodulation layer and electrode layer, thereby the charge image formed on the surface of the master recording medium is transferred to a surface of the photomodulation layer of the reproduction member. Further the charge is formed on a surface of the master recording medium, a reproduction member is brought to confront with the surface of the master recording medium across a gap, the reproduction member being a laminated structure of photomodulation layer and electrode layer and a space discharge is caused across the gap thereby the charge image formed on the surface of the master recording medium is transferred across the gap to a surface of the photomodulation layer of the reproduction member.

Abstract: A charge recording and reproducing device is constituted by a transfer device which transfers a film shaped recording medium from one to other side, a recording head adapted to form an electrostatic latent image from an image formed on the recording medium, an eraser for erasing the electrostatic latent image, a developing apparatus for developing the electrostatic latent image, and a reading device for reading the developed image.

Abstract: A voltage is electrostatically induced at a sensing device in correspondence with a surface potential of a measured object. In the case where the sensing device uses a field effect transistor in transferring detected information, there are some factors decreasing the accuracy of detection. Various new arrangements prevent such decreases in the accuracy of detection. In the case of the surface potential of the measured object corresponds to an optical image, new arrangements ensure accurate detection of the optical image. In some cases, color component signals are obtained on the basis of a detection signal.

Abstract: 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.

Abstract: There is provided a recording medium for recording information in a form of a charge latent image. The recording medium comprises, at least, an electrode through which an electro-magnetic radiation beam passes, a photo-conductive layer (hereinafter abbreviated in a PCL) whose resistance varies when the beam is applied thereto and an insulation layer (hereinafter abbreviated in an IL), the electrode and the layers being laminated to each other. There is further provided an apparatus for recording an image as a charge latent image on the medium described above. The apparatus comprises a guide for guiding an electro-magnetic radiation beam through the electrode, an auxiliary electrode arrangeed to face the madium so as to interpose the PCL and the IL between the electrodes and an unit for applying an electric field across the electrodes. There is still further provided an apparatus for reproducing information prerecorded as a charge latent image on the medium.

Abstract: An apparatus for reading out a charge latent image from a recording medium includes a photo-modulation member exposed to an electric field from the recording medium and exposed to reading light. The photo-modulation member varies a condition of the reading light in accordance with the electric field. A photoconductive member is disposed between the recording medium and the photo-modulation member. Control light is applied to the photoconductive member. The control light has an intensity which varies with respect to time.

Abstract: Time sequential information is written to a first light-to-light conversion element, and the thus-written time sequential information is thereafter written from the first light-to-light conversion element to a second light-to-light conversion element in the form of two-dimensional information. With this arrangement, the time sequential information can be converted with high resolution to the two-dimensional information in real time operation without involving a brightness gradient or shading.

Abstract: A set of birefringent members disposed in a path of light has an input surface via which the light enters the set and an output surface via which the light exits from the set. The birefringent members are designed and arranged so that the light separates into an ordinary ray and an extraordinary ray after the light enters the set via the input surface, that the ordinary ray and the extraordinary ray proceed along different courses respectively in the set, and that the ordinary ray and the extraordinary ray meet together where the ordinary ray and the extraordinary ray exit from the set via the output surface.

Abstract: There are provided an image information processing method and an apparatus thereof to process information carried by an electro-magnetic radiation beam by means of a photo-to-photo transducer. An intensity of an image information is adjusted by varying the intensity of an electro-magnetic radiation beam used for reading the information as electro-magnetic radiation beam information, which has been recorded on the transducer as a charge image. The electro-magnetic raidation beam information read out from the transducer is inverted by changing an operating range of a photo-modulation layer which is one of the components of the transducer. Furthermore, the electro-magnetic radiation beam information read out from the transducer is nonlinearly processed.

Abstract: 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.