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: 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: A thermal printing apparatus prints input gradational images, characters and figures by using multilevel density regulates the levels of the densities representing the gradiational images etc. to be printed by a linear thermal head having n heating resistors arranged in a row.

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 image pickup apparatus comprising: a charge storage member being movable; a photo-charge conversion unit comprising a photoconductive layer member having a transparent electrode, an electrode, and means for applying an electric field between said transparent electrode and said electrode, said photo-charge conversion unit opposing said charge storage member; and means for focussing an optical image of an object through said transparent electrode onto an image focussing surface of said photo-charge conversion unit via a taking lens, and for forming an electric charge image corresponding to said optical image of the object on said charge storage member. The image pickup apparatus may further comprise reading means for reading said electric charge image corresponding to said optical image and generating an electrical signal according to said electric charge image by opposing said charge storage member.

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.

Abstract: A plurality of field effect transistors are arranged in a line and have isolated open gates respectively. The gates are opposed to a surface of a charge storage medium and are subjected to respective induced voltages corresponding to a distribution of an electric surface potential of the medium. The transistors are enabled to output signals corresponding to the induced voltages respectively. The signals are sequentially transmitted from the transistors to an output terminal to generate an electric signal representative of the distribution of the electric surface potential of the medium.

Abstract: In a control system for an information recording laser beam, an intensity of a laser beam is varied in a predetermined variation pattern during each of sequential one-pixel periods. The laser beam is periodically activated and deactivated in synchronism with a change of the one-pixel periods. A duration of the activating the laser beam within each of the one-pixel periods is controlled in accordance with a density of each of pixels of an image to be recorded.

Abstract: There is disclosed a recording/reproducing system comprising an optical system for directing along a path of an electromagnetic radio ray from an object toward a recording medium, and a recording head disposed in the path for generating a charge latent image onto the medium. The feature of the system resides in that the recording head (system) forms the detection region which is not entirely subject to the influence of the electromagnetic radio ray and which is provided in a portion of the charge recording region of the medium, and in that a reproducing system discriminates the polarity of charges or the recording mode of the charge latent image recorded onto the medium by detecting the charges in the dectection region.

Abstract: A cartridge for a printer system for storing a paper and an ink film comprises an ink film storing part provided at a front side of the cartridge for holding a first roll of ink film and a second roll of ink film immediately behind the first roll so that the ink film is wound between the first and second rolls continuously and a paper storing part behind the ink film storing part for storing the paper therein as a form of a paper stack. The ink film storing part has a first opening on a first side of the cartridge so as to allow taking out of the first roll of ink film from the cartridge through the first opening, and the paper storing part has a second opening on a second side of the cartridge relative to the direction of insertion of the cartridge into the printer which is opposite to the first side so as to allow feeding of the paper from the cartridge through the second opening.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: There is disclosed herein an image sensing device of an image pickup apparatus which produces an image signal corresponding to an optical image of an object taken through the image pickup apparatus. The image sensing device includes an photoconductive member responsive to the optical image on one surface thereof to produce an charge image corresponding to the optical image on the other surface under a predetermined electric field and a change holding member arranged so that an electrostatic latent image is formed on one surface thereof. The charge holding member is disposed to be opposed relation to the photoconductive member and first and second electrodes are respectively disposed on the photoconductive member and the charge holding member. Also included in the device is a voltage application circuit comprising a change-over switch and a power source so that a voltage of the power source is applicable to the first and second electrodes.

Abstract: A thermal printer comprises a thermal head and a printing data output circuit outputting printing data. A portion of the printing data is copied. The copied portion of the printing data is added to a head of the printing data to form a combination of the copied portion and the printing data. The data combination is outputted to the thermal head. The thermal head is driven with the copied portion to preheat the thermal head. Then, the thermal head is driven with the printing data to perform actual printing.

Abstract: There is provided an image pickup device having a high resolution used for a movie camera, a still camera (shutter) camera) and the like.

Abstract: An image pickup apparatus comprising a circuit for forming an electric charge image corresponding to an optical image of an object to be image-picked up in a photo-photo conversion element constructed of two transparent electrodes with at least a photoconductive layer and a photo-modulation layer being interposed therebetween, by applying a light from the object to the photoconductive layer, a circuit for reading the electric charge image corresponding to the optical image of the object as optical information, by applying a reading light to the photo-modulation layer, means for erasing the electric charge image corresponding to the optical image of the object, wherein an erase operation and read operation are intermittently repeated for the electric charge image, and the reading means operating in a limited period which is substantially short compared to a period in which the forming means operate.