Abstract: An apparatus for converting image information generated by radiation incident on a storage layer into an electrical signal sequence by scanning the storage layer with a light beam permits a fast and precise conversion of the radiation image information into the electrical signal. This is a accomplished by connecting the scanned point of the storage layer to photodiodes functioning as light transducers via a light conductor in the form of a transparent, strip-shaped plate. The light conductor plate has a major surface adjacent to the storage area, and respective minor surfaces at opposite narrow ends thereof to which the photo diodes are connected. The apparatus can be used in x-ray television technology, such as medical x-ray diagnostics.

Abstract: In an image recording apparatus, an input video signal is digitized at a plurality of voltage levels, digitized video signals are rate-converted, and digitized still images corresponding to the respective voltage levels are sequentially displayed on a television monitor and are printed together on a film.

Abstract: An apparatus for reproducing a digitized image from a semiconductor memory onto a light sensitive material using a plurality of movable equally spaced light sources. The sources direct light beams through apertures in a mask, movable with the sources, onto a sheet of the material disposed on a drum. The light sources emit beams of variable intensity responsive to image data recorded in memory devices. As the drum rotates, the mask and light sources move in unison longitudinally at a rate of one pixel width per drum revolution. One embodiment of a recording module comprises only light sources and mask, while another embodiment also includes a pair of lens arrays that image the beam onto the sheet. There are an integral number of pixel widths between adjacent beams. A plurality of parallel lines on the mask and a scanner fixed relative to the drum sense the relative position between the mask an the drum for providing corrective feedback information to a motor moving the mask and light sources.

Abstract: An apparatus for mounting an unexposed film on and demounting an exposed film from a color scanner is described. The color scanner includes a recording chamber, a rotary drum therein and cassettes for containing unexposed film and exposed films which are normally mounted in communication with the recording chamber but which are detachable therefrom. There is described a light-blind window in the recording chamber which will permit an operator to extract an unexposed film from an unexposed film cassette, mount it on the rotary drum, and after it has been exposed, remove it from the rotary drum and place it in an exposed film cassette which then may be taken to a developing unit.

Abstract: An image output device has a plurality of memories each capable of reading and writing parallel data transferred in, means for instructing reading of the image data parallelly written in parallel in the memories, and a plurality of dot forming means for forming dots in accordance with the image data read from the memories.

Abstract: A full tone image recorder which uses LEDs or the like, a thin fiber optic strip and a scanning belt with an aperture therein drawn across the fiber optic strip to create a flying spot of light for irradiating photosensitive material and producing thereon a photographic quality image of data contained in a video input.

Abstract: In a method and an apparatus for compensation of any variation that occurs in the output power or luminous energy of a LED array used in electrophotographic printing, the time for applying a current to one line of the LED array is optimally divided into a fundamental on-time for constant current application to the individual elements of the LED array and a compensational on-time for selective current application thereto in such a manner that the exposure values on a photosensitive medium become uniform.

Abstract: An electron gun printer, having an electrically insulating vacuum enclosure, in which is located the gun, which gun emits an electron beam to a printing medium outside the enclosure, a focussing anode for modulating the intensity of the beam, deflecting coils or plates controlling an alternating movement of the beam to scan the lines of the printing medium, motor-driver rollers for controlling a displacement of the printing medium and a clock for synchronizing the anode and deflecting coils. One enclosure wall has at least two rows of windows arranged in staggered manner parallel to the scanned lines and respectively sealed by conductive plates, which are transparent to the electrons. The printer also includes plates or coils for deflecting the beam so that the beam alternately scans each row of windows during the displacement of the medium.

Abstract: A method and means of exposing a movable light-sensitive layer by means of an array of LED's are disclosed. The invention comprises energizing for each image line and for a variable time each LED in the array symmetrically with respect to an imaginary line extending parallel to the array by using comparator circuits connected to a signal generator for a selected period of time used to generate a uniformly decreasing and increasing signal and to buffers for storing a corrected image signal so that the LED's are energized by the compared signal from an associated comparator circuit.

Abstract: A thermally developed photographic copier is provided having two controls, one for adjusting the contrast, or blackness, of an image, and another for adjusting background contrast. A microprocessor samples and processes the settings of these controls to produce a video pedestal determined bythe background contrast control, and a gain control signal adjusted for effects of the background contrast setting to keep amplified video singals within the dynamic range necessary for the image contrast setting. Video signals used to expose light-sensitive paper or film are amplified in accordance with the gain control signal and combined with the video pedestal for desired background contrast.

Abstract: Disclosed is a video image printer for printing a video image of an input video signal onto a printing paper, in which a medium, such as a magnetic sheet disc or magnetic tape for a video cassette recorder, capable of recording/reproducing the information of the video image is employed. In order to obtain a reproduced video signal from the recording/reproducing medium with normal-operation, the video image printer is provided with a mechanical vibration-absorbing mechanism and an electrical reproduced signal correction circuit. Depending upon the requirements of the situation, a plurality of recording/reproducing heads are provided so as to make it possible to record a video image to be printed on the recording/reproducing medium during the printing operation of a previously selected video image.

Abstract: A photographic film printer that forms an image on film based upon received or stored digital information is provided. While maintained in a stationary position, the film is exposed in a sequence of raster scans by a rotating disk traversing the photographic film surface. At least one optical film is attached to the rotating disk in a manner that transmits optical energy directed towards the center of the disk to a peripheral location on the disk. Exposure of the film occurs by controlling the emission of optical energy by the fiber in accordance with the received or stored digital information as the peripheral edge of the disk rotates past the film surface.

Abstract: An image building apparatus of the type including a scanner section for reading image information of an original placed on the original holding board by scanning it during movement thereof and a printer section for building an image on printing paper by activating the recording head in response to image information transmitted from the scanning section. Arrangement is made in accordance with the order of the scanner section and printer section as seen from the fore side of the apparatus. The scanner section moves in the transverse direction as seen from the fore part of the apparatus, whereas printing paper in the printer section is transported in the direction at a right angle relative to the movement of the scanner section.

Abstract: An image forming apparatus capable of transferring a color pattern of an original onto a copying sheet in two modes: a nonlap print mode or a lap print mode. In a nonlap print mode using a two color original, color signals of light produced by reading the original pattern are converted into color signals of ink of the same colors as the original pattern. Then the original pattern is reproduced by using a transfer ink ribbon arranged the same colors as that of color signals of ink without lap transfer, that is, by transferring ink of one color on one PC cell of the copying sheet.

Abstract: A process for electrophotographic matrix printing and apparatus for carrying out this process, the apparatus comprising a plane assembly of modulating strips disposed alternately along two parallel lines, an optical light guide for guiding the light emitted by a virtual pinpoint light source in the form of two convergent light sheets respectively traversing the two lines of modulators, and a rotary drum whose lateral surface consists of a photosensitive support. The optical light guide is formed of a plate with plane parallel surfaces, bounded by three rims. The first rim has a toroidal form whose center corresponds to the position of the source; the second rim has a cylindro-parabolic form and the third rim comprises a dihedron whose edge is parallel to the plane faces of the guide. Writing can be effected line by line along a direction substantially parallel to the axis of rotation of the photosensitive support.

Abstract: An optical recording device for producing images as a whole at a predetermined scale size includes a beam oscillator for producing a beam, a scanner for line-scanning the beam produced by the beam oscillator, a recording mechanism for receiving the line-scanned beam in the form of a scanned spot and for recording an image formed by the scanned spot, and a variably sized aperture for receiving the beam and determining the size of the scanned spot.

Abstract: A novel method of scanning and recording image and an apparatus for use thereof in which: plural original pictures are attached to an original picture cylinder; the trim-region of each original picture is designated on the original picture cylinder prior to recording a duplicate image; the image signals obtained by photoelectric scanning of the original picture from within its trim-region are sampled; the data thus sampled are subjected to statistical classification and treatment for obtaining the density data of each original picture; based on this density data, the scanning condition data necessary for the optimum gradation correction and optimum color correction are determined; these scanning condition data are stored at every original picture; and at the same time, the scanning condition data which were stored at every scanning of the original picture are successively set in the image scanning and recording apparatus, in photoelectric scanning for recording the duplicate image; thus sequential scanning an

Abstract: A system for forming an image on the outer surface of a plastic card and for correlating image data with corresponding alphanumeric data, comprises a data acquisition subsystem shown in FIG. 1, an encoder shown in FIG. 2, an exposure station for scanning an electrophotographic medium in accordance with digital image data generated by the data acquisition system, and a toning station for toning the electrophotographic medium to produce a toner image. The encoder forms identifying information corresponding to the alphanumeric data on the card and provides the encoded card to an image transfer station. At the image transfer station, the toner image on the electrophotographic medium is transferred to a portion of the card through heat and pressure. A protective layer is placed over the fused toner image.

Abstract: Unevenness of luminance of a plurality of phosphors on a screen provided in the front end of an electron gun type fiber optic cathode-ray tube is corrected by first measuring luminance distributions at positions of picture elements of a picture to be scanned on the respective phosphors and calculating correction amounts needed to even up the measured luminance distributions. The calculated results are then stored in a table. The correction amount corresponding to a recording position is then added to the luminance signal when the picture is recorded and the sum is multiplied by a correction ratio which varies according to the level of the sum of the correction amount and the luminance signal.

Abstract: A circuit is disclosed which responds to an input voltage signal for adjusting the voltage applied across electrodes of an electro-optic modulator. The circuit includes two FETs connected in series. These FETs are operated as voltage controlled variable resistances. The electrodes are connected in parallel across one of these resistances. These resistances are vary in response to the input voltage signal to change the voltage applied across the electrodes. The circuit draws low current while providing sufficient bandwidth for exposing high quality images.

Abstract: A facsimile receiver of the type in which a laser beam modulated by a received video signal scans a light sensitive recording paper to print an image corresponding to the video signal. A feedback loop insures that the output of the laser beam acousto-optical modulator (AOM) accurately tracks the demodulated received video signal. A variable transmissivity filter in the path of the laser beam is automatically positioned to provide increased transmittance as the laser beam intensity decreases with aging of the laser, so as to maintain a constant light output intensity. A lens in the optical system which focuses the laser beam on the paper is moved mechanically as the paper is transversely scanned, so that the focus of the beam is varied to compensate for the planar (non-cylindrical) configuration of the paper, thus keeping the beam focused on the paper throughout the length of each scan line.

Abstract: Gray scale recording apparatus using an electro-optical light gate. The light gate comprises a series of side-by-side active electrode groups for controlling the recorded gray levels of corresponding side-by-side picture elements on a recording member. Each active electrode group comprises a plurality of switchable electrodes configured for at least partially encompassing a common interior point at successively greater distances.

Abstract: The present invention provides an image display apparatus including an image bearing web in the form of an endless belt on which an erasable image is formed, the image being carried into an image display section for observation. If the image bearing web is photosensitive, it is affected by the light, resulting in the deterioration of the image formed. To avoid this, the length of the image bearing web which is used to form one complete image is made equal to the full length thereof divided by an integer. Therefore, that position on the image bearing web which is used to form an image to be displayed is not changed for each display to limit the portions of the photosensitive web exposed to light to predetermined areas, thereby avoiding the occurrence of the difference in image quality within each of the predetermined areas.

Abstract: Laser imaging system and method for imaging a plurality of printed pages on an output medium in positions and orientations corresponding to an imposition format. Different areas of the medium are scanned to form the images for different pages with the beam traveling and being modulated to provide the proper orientation and position for each page.

Abstract: Method for the photographic production of a document by simultaneously photographically copying a continuous tone image and a graphic data pattern with a single common exposure source, characterized in that continuous tone image is exposed to said light source and the thereby image-wise modulated light image is projected through a screen dividing the light-image in dots of varying size onto one area of a photographic material, and the graphic data is simultaneously exposed to said light source and the thereby pattern-wise modulated light is projected through a screen dividing the original halftone pattern in dots of substantially same size printing them within a dot percentage range of 50 to 99%.

Abstract: The picture scanning and recording method of this invention permits the simplification of the manner of designation and input for the processing of picture pattern regions and line picture regions and the simplification of the processing circuit. The original picture is classified into plural types of regions, e.g., picture pattern regions, border tint regions, line picture regions, line picture tint regions or into a plurality of picture pattern regions of the same type. The preference of overlapped areas of the thus-classified regions are ranked. Based on such ranking, a picture image signal corresponding to the region having the highest ranking is selected in each of such overlapped areas.

Abstract: A recording medium scanning system includes a light source for generating a scanning light beam, a light modulator for modulating the light beam with a modulating signal, and a scanner for scanning a recording medium with the modulated light beam emitted from the light modulator. The scanning speed of a light beam emitted from the scanning means is detected by a scanning speed detector which issues a scanning speed signal indicative of the detected scanning speed. An arithmetic operation such as a multiplication or a division is effected on the scanning speed signal issued from the scanning speed detector and a recording signal. The result of the arithmetic operation is applied as the modulating signal to the light modulator.

Abstract: A method for recording a plurality of reproduction picture images of an original picture in which multiple laser beams modulated by an acoustic-optical modulator according to picture signals obtained by scanning the original picture in a scanning image reproduction system and an apparatus for carrying out the above described method. Particularly in the invention there is disclosed a means for adjusting mutual distance between each of the plurality of parallel laser beams in response to desired scanning line pitches.

Abstract: In a laser beam scanner apparatus for scanning the surface of a photosensitive drum or a document to be read by deflecting a laser beam emitted from a laser diode with a deflector, there is provided a drive current control circuit for controlling the magnitude of drive current of said laser diode on the basis of a beam deflection angle of said deflector.

Abstract: In a method for forming an image, a liquid crystal shutter array or matrix is positioned between a photosensitive material and a light source, and light emitted by the light source to the photosensitive material is controlled by driving each liquid crystal shutter portion constituting a picture element of the liquid crystal shutter array or matrix. Drive of the liquid crystal shutter portion is controlled by using the driving pulses having a pulse width shorter than the response time of the liquid crystal and by changing the pulse width or the number of the driving pulses in accordance with an image signal. The photosensitive material is of the type which can express a half tone. When the liquid crystal shutter array or matrix which intercepts light upon application of a voltage is used, the driving pulses are applied prior to exposure to intercept light.

Abstract: This invention relates to a non-impact printer apparatus such as a xerographic, magnetic, or ion deposition type printer in which the image is produced with a plurality of dots, which collectively combine to form the characters of a printed text or plot. The printer includes a dot forming array for selectively generating dots to form a pattern on a rotating transfer drum or belt. The drum having an image on the surface thereof, is adapted to transfer the image onto sheet material. The drum rotates through a plurality of rotations while an image is being formed thereon prior to transferring that image to a sheet. This is accomplished by selectively activating the drum charging mechanism, as well as the drum cleaning and toning mechanisms. The dot forming array may be an array of light emitting diodes and either the array or the drum are shifted between rotations to allow the same dot forming array to transfer dots to a different position during each rotation of the drum.

Abstract: A dot printer has an LED array printer head consisting an array of LEDs, drivers for independently driving the LEDs, and time control circuits for controlling ON or OFF times of the LEDs by energizing the drivers in accordance with image data and correction data stored in a memory. The LEDs can be divided into blocks which can be sequentially driven. Variations in mechanical and electrical characteristics of the LEDs are corrected to allow formation of a high-resolution image or a halftone image.

Abstract: Image distortion is corrected by advancing the recording start position for a scan line as scanning progresses when an image is reproduced with an image reproducing system.

Abstract: An image forming apparatus and method in which a scanner scans a document and prduces an image signal. The image signal is stored in a memory. Image formation and control are provided so that the first copy is produced from the scanner output and subsequent copies are produced from the signal stored in memory. For forming a color image, the image signal is converted into at least two color component signals. The full color copy is formed by superposing a plurality of single color images on each copy paper. The first single color image is produced from the scanner output and the subsequent single color images are produced from the color component signals stored in memory. Where more than one copy of color image is desired, the subsequent copies are all formed from single color images produced from the color component signals stored in memory.

Abstract: The present invention provides an image display apparatus including an image bearing web in the form of an endless belt on which an erasable image is formed. The erasable image is then carried to a display portion by the image bearing web. The length of the image bearing web is selected to be equal to or more than twice the length of the displayable region in the display portion. The image bearing web being movable independently of image forming process, whereby the image on the web which has already passed by the display portion can be returned to the display portion, permitting repetitive display function and improving the display apparatus in operation.

Abstract: A continuous tone image recording system comprises a solid state laser diode capable of sending out an analog signal-controlled pulsed beam of light, a continuous feedback circuit for stabilizing the laser diode light output, and an optical system for changing the path of the beam of light. The laser beam scans across a photosensitive receptor surface to provide scanned lines, which are positioned along the length of the receptor surface so as to provide images containing at least 64 levels of gray on transparent recording media or at least 32 levels of gray on opaque media.

Abstract: A device for producing photographs of controlled contrast wherein a negative to be copied is evenly illuminated by a light source, the image thereof is directed by an optical member to an image detecting and conversion unit which produces a "non-sharp mask" of said negative under control of a respective control unit. Both, the "non-sharp mask" of the image and the image of the negative are directed into an image plane where they are superimposed and exposed upon a photo sensitive material.

Abstract: An acousto-optic modulator for a high speed/high resolution raster output scanner, the modulator have a substrate composed of substantially pure gallium phosphide, with a relatively thin high frequency transducer comprised of a piezo electric layer sandwiched between metal electrodes and employing a conformable adhesive to prevent distortion of the crystal or transducer.

Abstract: An electronic image printing apparatus of the type utilizing a laser addressed liquid crystal light valve includes a single set of XY scanning galvanometer mirrors which operate initially to line scan an original photograph in order to derive electronic image data therefrom. The XY scanning galvanometer mirrors subsequently operate to addressably line scan a laser beam which is modulated in response to the electronic image data, across the surface of the liquid crystal light valve and to thereafter reflect a beam of incoherent light from a projection lamp for transmission through the liquid crystal light valve to expose a photosensitive material and thereby reproduce the image previously line scanned from the original photograph.

Abstract: The invention relates to an optical printer in which light signals emitted by an information-controlled light source are applied to a photosensitive record carrier via a mirror system and a circular-to-linear converter which consists of optical fibers. In order to improve the optical coupling between the light source and the record carrier and hence the printing quality, the mirror system comprises a conical mirror which opens in the direction of the circular-to-linear converter and which enables the light beam to be axially coupled into the circularly arranged ends of the optical fibers at the entrance of the circular-to-linear converter.

Abstract: A microdeflector facet tracker comprised of a flexible finger supported for bending movement on a base, the finger having a conductive highly reflective coating on the outside thereof to reflect a beam of high intensity light against the facets of a rotating scanning element, the finger progressively deflecting in response to the application of progressively increasing electrical potentials applied with each facet so that the beam is tracked with each facet as the facet moves past thereby maintaining the point at which the beam impinges against the facets substantially constant, the electrical potential being removed between each scan line to permit the finger to return to an undeflected position preparatory to the next scan line.

Abstract: A method for recording a halftone picture electronically, for use in a halftone picture reproducing machine for plate making is disclosed. A plurality of halftone data corresponding to a plurality of picture elements of a vignette halftone dot is simultaneously read out of a memory in which the vignette halftone dot quantized is stored, in synchronization with picture signals, and the halftone data and the picture signals are added to obtain recording signals, and according to the recording signals a plurality of light beams for exposure are controlled to be open or close, thereby recording a halftone picture. The number of the light beams included in a recording scanning width is selected depending on a screen pitch, and then the selected light beams are controlled according to the recording signals.

Abstract: An apparatus for recording the information content of an electrical signal on the surface of a light sensitive medium by means of a plurality of scan traces across said medium comprises a source for providing a light beam of high intensity modulated in accordance with electrical information supplied thereto, an actuator for actuating the source means and generating sync signals, the frequency of the sync signals being altered in accordance with variations in scanning speeds of the light beam to impinge on the medium, a reflector having a plurality of contiguous reflective faces rotatable about a central axis, a rotation device for rotating said reflector about said central axis; and a lens, disposed between said source and said reflector, for receiving and passing through said light beam.

Abstract: A recording apparatus for linewise recording information on a moving photoreceptor by means of a plurality of chips on each of which parallel sub-rows of uniformly spaced radiation sources are formed, wherein a shortcoming of prior art apparatus, namely the impossibility to use chips on which even one radiation source only is defect, is overcome.The apparatus comprises two parallel rows of radiation sources, each row comprising reserve radiation sources that are arranged with corresponding basic radiation sources of the other group in optical parallelism, and connection circuit means for establishing electrical contact with a basic and/or a reserve radiation source (FIG. 5).

Abstract: An optical data recording system and method for receiving an input data stream to be recorded on a recording medium; dividing the input data stream into a series of data sections; compressing each data section in the series into a period shorter than the period of the original section and providing data gaps between each compressed data section; recombining the compressed data sections including the data gaps into a gapped output data stream; and recording the gapped output data stream on a recording medium.

Abstract: An image scanning and recording device includes a recording unit for duplicating and recording halftone images on a photosensitive material. The recording unit comprises a light source associated with an acousto-optic light modulating element including a plurality of ultrasonic wave exciting portions disposed in an array side by side on a single acousto-optic medium. The ultrasonic wave exciting portions each independently modulate incident light into the respective modulated light beams in response to image signals from photoelectrical scanning means. In addition means are provided for directing light from the source to the acousto-optic light modulating elements. Also provided are means for forming rows of tiny light spots corresponding to the modulated light beams on a recording material.

Abstract: A one-dimensional scanner for use in an image reader in which the pitch of the electrode elements is reduced to increase the image density. An upper electrode array has a plurality of upper electrode elements arranged at a predetermined pitch and spacing in a one-dimensional scanning direction while a lower electrode array similarly has a plurality of lower electrode elements arranged at a predetermined pitch and spacing in the one-dimensional scanning direction in an opposed, spaced and staggered relation with respect to the upper electrode elements wherein each lower electrode element is positioned across two adjacent upper electrode elements thereby defining a picture element region therebetween. A layer of material such a photosensitive material, a layer having an electro-optical effect, or a layer of electric-radiant-energy-converting material is disposed between the upper and lower electrode arrays.

Abstract: An image quality enhancement scheme is disclosed wherein the image information associated with each line of an image source is transferred to one line of an image receiving medium a plurality of times, the quality of the image information transferred to one line of the image receiving medium gradually improving following each subsequent transfer. A fiber optic cathode ray tube (CRT) transfers the image information to the image receiving medium. An electron beam generator in the CRT traces a plurality of scan lines on the inner faceplate of the CRT. The image receiving medium scrolls across the face of the CRT in synchronism with the trace of each of the scan lines on the inner faceplate thereof. The image information associated with each line of the image source is transferred to the one line of the image receiving medium via the trace of each of the plurality of scan lines.

Abstract: An aperture mask for use in the recording section of an image scanning and recording system is disclosed. The aperture mask defines a pair of apertures, preferably of identical size and shape, in alignment with the optical path of a light beam for exposing a recording material, and the pair of apertures being arranged in spaced apart relation at a predetermined distance.

Abstract: A one-dimensional scanner for use in an image reader in which the pitch of the electrode elements is reduced to increase the image density. An upper electrode array has a plurality of upper electrode elements arranged at a predetermined pitch and spacing in a one-dimensional scanning direction while a lower electrode array similarly has a plurality of lower electrode elements arranged at a predetermined pitch and spacing in the one-dimensional scanning direction in an opposed, spaced and staggered relation with respect to the upper electrode elements wherein each lower electrode element is positioned across two adjacent upper electrode elements thereby defining a picture element region therebetween. A layer of material such a photosensitive material, a layer having an electro-optical effect, or a layer of electric-radiant-energy-converting material is disposed between the upper and lower electrode arrays.