Abstract: The invention provides a color copying machine or apparatus for forming chromatic images which irradiates an original with rays from a light source, focuses the reflection from the original as latent images on a photosensitive recording medium, and forms chromatic images corresponding to the latent images on a copy sheet. The apparatus includes supplementary exposing means for irradiating a specified region on the photosensitive recording medium with desirable chromatic light. Thus the color of images on the region is desirably changed to make the region conspicuous or inconspicuous.

Abstract: A simulator simulates a hard copy to be made and displays an image thereof on a color monitor. In such a simulation, a lighting condition correction unit corrects a video signal in accordance with the lighting conditions where the color monitor is installed. The color balance and density of the simulated image under an illumination thus are the same as the hard copy to be made.

Abstract: A color image recording apparatus includes an exposing unit for exposing a photosensitive recording medium to light through a succession of mask members prepared based on colored image information to form an image on the photosensitive recording medium. The apparatus further includes a stop signal input unit for inputting a stop signal to interrupt the image recording operation, a mask member ejecting unit for ejecting all the mask members from the image recording apparatus when the stop signal input unit provides a stop signal, and a photosensitive recording medium changing controlling unit for changing the photosensitive recording medium for a new one if the latent image forming process has been started by the exposing unit before the stop signal is provided by the stop signal input unit.

Abstract: An image forming apparatus for forming an image on a photosensitive recording medium by exposing light by way of one of plural mask members which are selectively and consecutively placed on an exposure position. The apparatus includes a plurality of holding or retention positions linearly connected to the exposure position to which the mask members are selectively displaced. A transport device transports the mask members from the exposure position to the holding positions and vice versa.

Abstract: A color image recording apparatus includes an exposure device in the housing for exposing a photosensitive recording medium to light through a mask member which has been produced based on image information. A light-transmissive contacting plate for holding the mask member and the photosensitive recording medium closely against each other is disposed in a mask member feed belt and connected to a belt support frame assembly. A positioning unit for positioning the mask member with respect to the photosensitive recording medium comprises a link mechanism for moving the belt support frame assembly. The belt support frame assembly and the housing are operatively connected by the link mechanism. The color image recording apparatus further includes a charging unit for electrically charging at least a surface of the feed belt with which the mask member will be brought into contact. The surface of the feed belt comprises an electrically chargeable, relatively hard coated layer.

Abstract: An element selecting device for locating one of a plurality of elements on a predetermined plane which comprises a horizontally movable supporting member which supports the plurality of elements on the predetermined plane, wherein the movement of the supporting member is controlled according to the signals of sensors therein. Consequently, by using the element selecting device, in a filter conversion device, for example, the device can be structured simply and reliably with filters of different color separation functions being disposed in a row.

Abstract: A light irradiation device having a light source and a plurality of filters for providing a plurality of kinds of colored lights onto an object. The light irradiation device includes a carriage reciprocally movable over the object in one and opposite directions and carrying thereon the light source. The irradiation device also includes a filter frame mounted on the carriage and slidably movable in the one and opposite direction relative to the carriage. The slide frame is attached with the plurality of filters arranged side by side in a horizontal plane. The relative position between the carriage and the filter frame is controllable for changing a filter with remaining one of the filters.

Abstract: A method for forming images on plain paper is disclosed, comprising the steps of: image-wise exposing an imaging sheet, said imaging sheet comprising a support having a layer of photosensitive microcapsules on the surface thereof, said microcapsules containing a photohardenable or photosoftenable composition including a photoinitiator, and a color precursor; assembling said image-wise exposed imaging sheet with a sheet of plain paper; subjecting said assembly of said imaging sheet and said plain paper to a uniform rupturing force to cause said photosensitive microcapsules to rupture and transfer an image-wise pattern of said color precursor to said plain paper thereby forming a latent image thereon; separating said imaging sheet from said plain paper; assembling said plain paper bearing said latent image with a developer-donor sheet comprising a support having a layer of a developer on the surface thereof to form a second assembly; subjecting said second assembly to a uniform force to transfer said developer

Abstract: An image forming apparatus for forming a mask member on the basis of a color image information and exposing a photosensitive recording medium to light through the mask member to thereby forming a color image, including a light source for emitting light, at least two color separation filter units for passing the light therethrough and providing transmitted lights having different (broader and narrower) half-widths in spectrum to thereby irradiate the light having a desired half-width in spectrum to the photosensitive recording medium, a position detecting unit for detecting each position of said color separation filter units, and a switching unit for performing a switching operation between the color separation filter units to position desired one of said color separation filter units in an optical path of the light.

Abstract: An exposure device used in an image forming apparatus for exposing a photosensitive recording medium carrying microcapsules on one surface thereof to color image lights produced in accordance with color image data representing an original image to form a latent image corresponding to the original image, includes a fiber optics tube (FOT) having an optical fiber array serving an exposing surface for producing the color image lights in accordance with the color image data and selectively exposing the photosensitive recording medium to the color image lights to form the latent image on the photosensitive recording medium, the exposing surface being disposed in such a manner as to confront the other surface of the photosensitive recording medium, a FOT driving circuit for driving the FOT, and a control unit for controlling the FOT driving circuit so that the color image lights are selectively produced in accordance with the image data inputted thereto and the color image lights thus produced are irradiated to the

Abstract: A color image recording device for forming a mask member having a positioning mask thereon and exposing a photosensitive medium through the mask member to light to form a color image on the photosensitive medium, comprising belt for carrying the mask member thereon, two belt supporting rollers spaced at an interval and independently movable in a feeding direction of the mask member and in a vertical direction thereto, stepping motors for moving the belt supporting rollers, a sensor for detecting the position of the positioning mark and a control unit for controlling the stepping motors to register the mask member. According to one aspect of this invention, the stepping motors are controlled by the control unit to change a feeding speed of the mask member at two or more stages in accordance with an output signal from the sensor by switching the excited phases of the stepping motors or by changing an electric power supplied to at least one of the stepping motors.

Abstract: The improved method of chroma control for use in a color image forming appartus such as a digital color copier comprises the steps of: reading information on a color original; transforming the density of each of three original colors, red, green and blue, to an associated hue, lightness and chroma; controlling said chroma; combining the controlled chroma with said hue and lightness; transforming the combinations to colorant densities; and outputting a color image based on said colorant densities. The method allows only chroma to be controlled without affecting hue and lightness, thereby enabling the user to copy color originals with the tone of the copy controlled as freely as he likes.

Abstract: In forming a color picture image on a photosensitive recording medium by exposing through a masking master plate, the plate is conveyed by a conveyor belt into an exposure device where the plate must be registered in a specified position to avoid a color shift in the image formed on the photosensitive recording medium. A positional error or deviation of the plate is detected by reading out a location mark on the plate by a plurality of sensors. According to the outputs from the sensors, the conveyor belt is moved in a longitudinal path by one or two motors to correct a longitudinal deviation, and two longitudinally spaced portions of a belt support unit are moved, in a direction perpendicular to the longitudinal path, independently and respectively by other two motors to correct a transverse deviation and/or a skew.

Abstract: Color separation image signals (Y, M, C, K) are converted into halftone dot image signals (Y.sub.d, M.sub.d, C.sub.d, K.sub.d) by a halftone block circuit (29). Red, green, blue and white beams are obtained from red, green and blue light sources (31R, 31G, 31B) or from a single white light source. These beams are modulated by acousto-optical modulators (32R, 32G, 32B, 35) responsive to the halftone dot image signals (Y.sub.d, M.sub.d, C.sub.d, K.sub.d) and thereafter converged onto a color photosensitive material (23), to produce a halftone dot color image on the color photosensitive material (23).

Abstract: In an image recording apparatus for forming an image on a photosensitive recording medium by exposing the matter to light through a light-transmissive original or a mask member, a light-transmissive and dielectric conveying means is disposed between a light source and the photosensitive recording medium and has an outer surface for carrying thereon the original or a mask member with a space between the latter and the photosensitive recording medium. The conveying means is electrified by electrifying means such as a corotron, a brush to electrostatically attract the original or a mask member thereto.

Abstract: Video images of each frame of a roll of film are stored in a first memory when printing the frames on a photographic material. Thereafter, the images are read out from the first memory for image processing and written in a designated area of a second memory. Video signals for a number N of frames are written in memory area of the second memory designated for the respective frames to provide composite video signals and then are read out to be printed as a composite image on a photographic material as an index print. When printing each frame of the roll of film, a first mirror is removably inserted into a printing path to project an image of the frame to a TV camera in order to provide three color video signals. Video signals for several frames are electrically composed to provide composite video signals which are printed as a single composed image having reduced images inlaid in a matrix on a photographic paper.

Abstract: An image recording apparatus which eliminates a positive film for carrying photomasks. The apparatus for recording an image on a recording medium uses a recording media including first and second recording mediums. The first recording medium has first and second surfaces and is provided with a first material whose phase is changeable upon light exposure, and the second recording medium is provided with a second material reactable with the first material for forming a final output image thereon. The image recording apparatus forms light-shieldable masks on the first surface of the first recording medium. A light exposure arrangement confronts the first surface of the first recording medium for irradiating light toward the mask and the first surface. A pressure-developing arrangement provides the output image on the second recording medium.

Abstract: In one of the embodiments of the invention, a plurality of originals is sequentially optically scanned and the image bearing light is applied to each of a plurality of photosensitive recording sheets to form a latent image corresponding to one of the originals. The photosensitive recording sheet is brought to facial contact with a developer sheet to develop the latent image and provide a visible image on the developer sheet. The developer sheet is circulated so that it is again brought to facial contact with the subsequent photosensitive recording sheet on which another latent image is formed by optically scanning a different original. In this manner, a plurality of images on different originals are recorded in superposition on a single recording medium. In another embodiment of the invention, an image of a single sheet of original is analyzed to a character image and images of primary color components.

Abstract: In order to adjust light components, there is provided a filter unit which includes a light source for emitting a light, a filter housing to which an opening is formed; and three filters arranged in vertical direction within the filter housing and adapted to be drawn from the opening. Each of the three filters adjusts one of red, blue and green components contained in the light. A drive unit is further included in the filter housing which selectively draws the three filters from the opening to an optical path. Accordingly, the light components can be adequately adjusted by drawing the filters in the optical path. By the employment of such a filter unit in a color image recording apparatus, the color tone of the image reproduced in a copy sheet can be adjusted.

Abstract: Disclosed is a method of recording a picture onto a photosensitive and pressure-sensitive paper, which comprises the steps of: forming in advance a mask original form of a film having a light-transmitting portion and a non-light-transmitting portion corresponding to information of the picture; exposing the photosensitive and pressure-sensitive paper through the mask original form to thereby form a latent image on the photosensitive and pressure-sensitive paper; and pressure-fixing the photosensitive and pressure-sensitive paper carrying the latent image formed thereon.

Abstract: A stereopticon lantern (2) is fitted to one per se known color photocopying machine (1) operating by utilizing a photochemical process, so as the diapositive is projected onto the same reproduction screen (15) thereof, thus obtaining a double possibility of reproduction. The color photocopying machine (1) to which said stereopticon lantern (2) can be fitted comprises a horizontal shooting plane (11) constituted by a thoroughly transparent glass plate onto which the image to be reproduced is put, which image is illuminated below by adequate lamps (12) and the so illuminated image is horizontally reflected by a mirror (13) disposed at a 45.degree. angle inclined beneath said shooting plane and is projected, through a relative optical control unit (14), onto a vertical screen (15) constituted by a photosensitive paper sheet (16), obtained from a band wound about a respective roller (17).

Abstract: For an image formation apparatus having supplemental light sources in addition to an optical system for providing an image forming light beam reflected from an original to be copied, a control unit controls exposure by these supplemental light sources according to the photosensitivity characteristics of microcapsules of different kinds with which a light-receiving sheet is coated and which respond differently to individual beams from the supplemental light sources. The control unit may also be designed to take into consideration the effects of ambient humidity and the user's choice for particular coloring.

Abstract: An exposure device for use in an image recording apparatus for exposing a photosensitive recording medium to light so as to form a latent image thereon.

Abstract: In an image recording apparatus, a halftone screen having its light transmittance varying regularly is arranged on an optical path extending between a light source and a photo-sensitive recording medium. The halftone screen is movable along the optical path between an operative position where a screening effect of the halftone screen is validated and an inoperative position where the screening effect of the halftone screen is invalidated. A controller is provided for controlling the position of the halftone screen in such a manner that when an image on an original is of a continuous tone, the halftone screen is moved to the operative position, while when the image on the original is of a dot tone, the halftone screen is moved to the inoperative position.

Abstract: An image recording device applies light including image information from an original through a focusing optical system to a photosensitive member to record the image information on the photosensitive member. A filter driving mechanism in the image recording device includes at least two filter groups each including a plurality of equally spaced filters extending in a main scanning direction, the filter groups being disposed in a plurality of stages between the focusing optical system and the photosensitive member, and moving mechanisms for moving the filter groups back and forth in a direction substantially normal to the main scanning direction.

Abstract: A color copier including an exposure light source exposes an original document with red, blue, and green light, on a photosensitive film having a substrate and an ink coating which includes ink particles of multiple colors carried on the substrate, and on which a reproduction of the original document is formed, in response to the light exposure, through a reaction of ink particles of the color which corresponds to the wavelength of the light reflected from the original document. The color copier further includes a lightproof film case for storing the photosensitive film; an image forming lens for forming an image of the original document on the photosensitive film by focusing the reflected light; a copy paper feeder for feeding a copy paper; a fixer for fixing the image formed on the photosensitive film on the copy paper; a separation claw which separates the photosensitive film from the copy paper after the fixing of the image; and a film take-up shaft for winding thereon the photosensitive film.

Abstract: A method for converting a continuous tone image on a transparency, negative or the like into a halftone image includes the steps of providing a plurality of light-responsive elements upon a surface, each element adapted to generate a local electromagnetic field proportional to the relative intensity of light directed upon that element, a field of one element adapted to interact with fields of other, adjacent elements, directing light through the transparency upon the elements on the surface in a pattern of light and shadow to cause each element to generate a local field proportional to the magnitude of light directed upon that element, allowing the fields of the respective elements to interact to cause the elements to move upon the surface to achieve an equilibrium with the relative spacing of elements in at least one region being in proportion to the intensity of light directed upon that region, and recording the relative positions of the elements in that region for creating a halftone image of a correspondi

Abstract: In an image recording apparatus in which an original is optically read and recorded on a photo-sensitive material, a multi-lens array is provided in the section reading the original. A belt-shaped color and density correcting filer consisting of a plurality of filter elements of differing colors and densities is movably disposed between the multi-lens array and the photo-sensitive material so that a desired one of the filter elements is positioned in the optical path of the multi-lens array.

Abstract: In an exposure system, a photo-sensitive recording medium rests on a resting surface of a table. The recording medium on the resting surface is illuminated with light from a light source and is exposed to the light. The resting surface has reflectivity which is so determined as to increase from a central region of the resting surface gradually toward opposite end regions thereof in such a manner that a sum of a quantity of the light from the light source, with which the recording medium is illuminated directly, and a quantity of light transmitted through the recording medium and reflected by the resting surface, with which the recording medium is illuminated indirectly, is made substantially uniform over the entire surface of the recording medium.

Abstract: A picture image recording apparatus includes an image-forming device for forming a light-shielding image on a light-transmissive sheet, an exposure device for exposing a photosensitive recording medium to light through the light-transmissive sheet to form a latent image corresponding to the light-shielding image on the photosensitive recording medium, and either a control device for controlling the image-forming means to form a light-shielding image on a next light-transmissive sheet area to be exposed, during exposure operation by the exposure means, or a standby device for holding the light-transmissive sheet with the image formed thereon in a standby condition. While the photosensitive recording medium is being exposed to light through the light-transmissive sheet, a next light-shielding image to be exposed can successively be formed on the light-transmissive sheet. Therefore, the time required to record picture images can be shortened.

Abstract: A method is disclosed of preparing an extended tonal range pre-press proof of an original subject in color using photographic color print paper. Yellow, magenta and cyan color halftone separation negatives and positives of the original subject are prepared along with a pin dot maker film positive (PDM) which is clear only in the extremely fine highlight detail areas of the color original. After exposure of photographic color print paper to combinations of the yellow, magenta and cyan halftone separation negatives and positives through respective blue, green and red filters, in each instance the yellow, magenta and cyan halftone negatives are used to again expose the undeveloped print paper to blue, green and red filtered light respectively in association with the PDM. A black separation halftone negative may also be used in the process to improve the final appearance of the product. The resulting pre-press color proof has enhanced fine highlight color detail.

Abstract: A color image processing apparatus wherein different color filters are provided in an image pickup device corresponding to plural groups of small pixels, each group of which is one unit of color pixels, and color image signals are obtained from the common position of the small pixel groups by suitably interpolating color image signals obtained from the small pixel groups.

Abstract: This invention is directed to the storing of digital information. This storage system comprises a number of layers of transparent or translucent material. In each layer there is a chemical or chemicals subject to change by being contacted with different electromagnetic wave lengths. For example, if there be eight layers then the chemical or chemicals in any layer is subject to be changed by an electromagnetic radiation of a wave length different than for any of the other seven layers. In this manner, with eight layers it is possible to have an eight bit byte. Actually, under premutations and combinations it is possible to have as many as eight bit bytes from the eight layers. It is conceivable that there may be more than eight layers such as sixteen layers of thirty-two layers. There is the possibility of storing large amounts of information in a small volume. This patent application is a continuation-in-part patent application of co-pending patent application Ser. No.

Abstract: A photocopier for reproducing an image of an object together with a "special effect" image that is related to the image. In one embodiment, the "special effect" image is the same entire image, or a modified portion, that is reproduced at an adjacent position and in a different color, or in otherwise different visual form. In another embodiment, the "special effect" image is a fixed geometric figure, or portion, such as a line, circle, box, or other shape, also in different color or visual form. In still another a dual version of the image is reproduced to be viewed as a three dimensional configuration. In a still further variation, a portable video camera is used as a reader to obtain dual views of the object to be reproduced, to present a three dimensional reproduction by the photocopier.

Abstract: A color zoom copying apparatus is provided having a slide base which holds one lens group comprising part of a zoom lens system, and which can move in the optical axis direction of the zoom lens system. The apparatus includes structure for driving the slide base along the optical axis direction in accordance with the magnification of the zoom lens system, a movable lens frame which supports another lens group of the zoom lens system and which is supported on the slide base so as to move in the optical axis direction, and a first adjusting device for moving the movable lens frame relative to the slide base in order to correct deviations in the focus of the zoom lens system which occur as a result of variations in magnification, in accordance with displacement of the slide base.

Abstract: An image recording device wherein a photo-sensitive paper or a plain paper is selected as a recording medium. If a monochrom image is to be recorded, a provisional image formed with light-shield materials which corresponds to an original image to be recorded is directly transferred onto the plain paper to form a monochrom image thereon. If a color image is to be recorded, the light-shield image is once transferred onto an image carrier, and the light-shield image carried on the image carrier is exposed on the photo-sensitive paper to form a latent image thereon. The latent image formed on the photo-sensitive paper by the above exposure is then developed to a visible color image.

Abstract: A radiation-sensitive element for half tone color proofing adapted to be exposed by scanning with four independently modulated sources of radiation emitting at different wavelengths within the range 550 to 900 nm, the element comprising a substrate bearing at least four separate imaging media coated thereon, said imaging media including:(1) an imaging medium capable of forming a yellow image upon imagewise exposure and processing,(2) an imaging medium capable of forming a magenta image upon imagewise exposure and processing,(3) an imaging medium capable of forming a cyan image upon imagewise exposure and processing, and(4) an imaging medium capable of forming a black or a balancing black image upon imagewise exposure and processing,each imaging medium having a maximum spectral sensitivity at a wavelength different from that of the maximum sensitivity of the other imaging media such that after exposure and processing super-imposed yellow, magenta, cyan and black or balancing black images are formed, each image

Abstract: Method and apparatus for improving the perceptibility of details on a hard-copy of a color image and for matching the color of a displayed image and a color hard-copy of the same image. In addition to the recording of the color information, at least one white light exposure modulated by the information of at least one color separation record is performed.

Abstract: Disclosed is a color-tone controlling method and apparatus therefor, in which a desirably selected one of a plurality of color-tone plates of various colors such as red, green, blue, and so on is put onto a back surface of a color photosensitive medium, so that when a front surface of the color photosensitive medium is exposed to image carrying light, a part of light transmitted through the color photosensitive medium of the same color as that of the color-tone plate is reflected on the color-tone plate so as to re-expose the back surface of the color photosensitive medium.

Abstract: This invention is directed to the separation of electromagnetic radiation into a, plurality, of selective wave length bands or colors. The term color separation, broadly applied, is meant to be the separation of primary and secondary or complementary wave lengths or colors for the purpose of geometric imaging. Such color separation is achieved, substantially, instantaneously, without the loss of wave length energy or color intensity by a novel means of reflection, transmission and color filtration. The separated colors or selective wave length bands can be, substantially, instantaneously, recreated as a geometric image or can be recorded for later recreation as a geometric image such as by photographic or movie films or by tapes; lithographic plated or engravings. Also, the separated colors or selective wave length bands can be used in making printing plates, directly, without using film.

Abstract: An image scanning apparatus comprises a linear light source being arranged in parallel with a picture plane to be scanned. The linear light source is composed of a cylindrical rod made of a transparent material on which light diffusing reflecting layer of stripe-shaped is provided along a longitudinal axis of the cylindrical, rod and a lighting means for entering light fluxes into the inside of the rod at least from one end thereof to emit light fluxes each having directivity from the outer surface of the rod.

Abstract: Method and apparatus for full-color reproduction of a continuous tone color picture or scene using multiple diffraction gratings and masking techniques. A properly photosensitized media, containing regular arrays of multiple diffraction gratings (70), is first created using computer-generated masks and an interferometric recording technique. This plate is referred to as the "white grating canvas" master or WGC master. Reflective and/or transmissive replicas of the WGC master are then created. For the reproduction of each unique scene, one of these WGC replicas is selectively masked in order to leave only certain gratings or portions thereof active. Photographic or xerographic means are two possible ways in which the masking might be accomplished. The selective masking of the WGC itself, or an intermediate material which is then laminated in registration with the WGC, is done in such a way as to reproduce the primary color components in the original scene when properly illuminated and viewed.

Abstract: Copying apparatus is constituted by a photosensitive member having a photochromic characteristic when changes light transmitibility when projected with light reflected by a manuscript. A light source is provided for projecting a photo-image formed on the photosensitive member onto a photosensitive recording sheet through the photosensitive member. In a modified embodiment, the copying apparatus has a construction substantially the same as the conventional electrophotographic copying machine except that a photosensitive drum is made of transparent material and covered by a thin transparent photoconductor. Consequently a toner image corresponding to the photo-image of a manuscript is formed on the photosensitive drum. A light source is provided for projecting the toner image on a photosensitive recording sheet.

Abstract: A photographic control device for scanner and exposure control system calibration in a photographic printer includes a carrier disk to present an open scan aperture in the scan gate for normal printer operation, and selectively a plurality of control patches in the scan gate for calibration of the scanner at startup. The disk is driven by a stepping motor and timing belt, the disk position being controlled by a position sensor tied in with the drive motor. The disk is mounted by three rotatable bearings spaced around its periphery.

Abstract: A plurality of laser beams are applied to a scanning medium at different positions thereon and are converted thereby to respective scanning light beams. The laser beams are modulated by color image signals representative of respective differently colored images. As the scanning medium rotates, it deflects the applied laser beams and emits them as the scanning light beams. The scanning light beams are then applied to respective photosensitive bodies to scan them, forming latent images thereon which correspond to the color image signals, respectively. The latent images are developed into respective color images which are transferred and fixed to a single recording medium thereby to form a color image thereon.

Abstract: An exposing apparatus for use in a color copier in which reflection light from an original image mounted on an original mounting plate thereof and illuminated with white light is passed through three color separation filters which are inserted, in sequence, into an optical path of a common focussing system of said copier, and color-separated images obtained from said filters are focussed in sequence on a common image plane. Transparent flat plates having thicknesses suitable to correct optical path lengths for the respective color-separated lights such that effective value of focussing optical path lengths of a focussing element of the focussing system for the respective color-separated lights become equal to a distance of the focussing system between a plane of the original and the image plane are inserted into the focussing optical path in sequence in synchronism with the sequential insertion of the color separating filters into the optical path.

Abstract: Apparatus is provided for use in color printing systems wherein an image is projected by a plural monochrome pictures corresponding to the pictures separated into three primary colors onto an imaging sheet which contains a dye and a photosensitive composition encapsulated in a layer of pressure rupturable capsules. The imaging sheet projected the image is positioned so the layer of capsules lies between the imaging sheet and an image-receiving sheet. A pressure roller applies pressure against the imaging sheet and the image-receiving sheet to rupture the capsules between them and thereby transfer the dye to the image-receiving sheet.

Abstract: An optical system for a color copier in which light images of blue, green and red produced by color separation are formed one on each of three photoconductive elements, then developed by toner of associated colors, and then transferred one upon another onto a paper. A first mirror is disposed in an optical path to which light representative of an image of an original document is led through an image-forming lens and a mirror group. Light reflected by the first mirror is focused onto a first photoconductive element. Light transmitted through the first mirror is split by a second mirror which is located in a position for intercepting a part of the width of a slit for exposure. Light reflected by the second mirror is focused onto a second photoconductive element. Further, light outside the range of the second mirror is reflected by a third mirror to be focused onto a third photoconductive element. The first mirror has a spectral characteristic which reflects light of one of three colors, i.e.

Abstract: An apparatus for producing a hard copy of a color picture includes a cathode ray tube for displaying a picture component on a screen thereof upon reception of a video signal which is associated with a separated-color component, and a recorder which includes a plurality of separated-color filters to expose a recording medium to the picture component being displayed on the screen through any of the filters. The recorder exposes the recording medium to picture components of individual separated colors by additive color photography to record a color picture. A photodetector is provided for measuring brightness of the screen through any one of the filters while a controller controls the cathode ray tube and the photodetector. The controller, before recording the picture components of the individual separated-color components on the recording medium, adjust at least one of luminance and contrast of the tube and an exposure time of the recording medium, based on the brightness measured.

Abstract: A color image copying system (10) includes a light modulator (12) that receives incident light rays emanating from a source (14) of light. The light modulator comprises a light dispersing apparatus (54) that disperses different wavelengths of the incident light rays to different locations on a focal surface (60). A filter mask (68) aligned with the focal surface transmits preselected wavelengths of the ultraviolet light and blocks light of all other wavelengths. Each of a set of light valves (86, 88, 90) receives a different wavelength of light transmitted by the filter mask and intensity modulates it in accordance with image pixel information provided by an information source (16). An optical focusing apparatus (56) focuses the intensity-modulated wavelengths of light to a relatively small location (20) on an image focal surface (22) which is aligned with a light-sensitive medium (24).