Abstract: A line exposure type image forming apparatus having a micromirror device 40 with numerous micromirrors 41 tiltable for reflecting light incident from a light source to a predetermined exposure position on a photosensitive material 2, and a sub-scan moving mechanism 8a for moving the photosensitive material relative to the exposure position. The micromirror device is disposed such that an imaginary line linking imaging positions on the photosensitive material of the micromirrors in a predetermined line is at an angle to a direction of relative movement of the photosensitive material. As a result, an exposure dot line is produced on the photosensitive material in a main scanning direction perpendicular to the direction of relative movement by a main scanning mirror set formed of micromirrors selected in a direction at an angle to a direction of the columns of the micromirror device.

Abstract: An image printer for printing images with less cross-talk between images and less image flickering is provided. A plurality of images are interleft in one or a plurality of line units and a lenticular lens is used to make it possible for each individual pixel to be distinguished. The difference in brightness between an attentional pixel and the surrounding pixels that surround this attentional pixel is taken, and a correlation value is produced, the correlation value being reduced if the difference is large and increased if the difference is small. The image printer is equipped with a pixel shape controller that makes the printed pixels smaller in a region where the correlation value is low, and makes the printed pixels larger in a region where the correlation value is high.

Abstract: In an optical printer apparatus designed so that an optical head (100) having an LED light source (110) therein is moved relatively to a sensitized sheet (500) and an image is formed by emitting a plurality of color light beams in regular order from the LED so that the light beams are focused at given spaces on the sensitized sheet, an image pitch P for the color light beams is substantially equal to an integer multiple of the maximum exposure distance D.

Abstract: A method of sensing the pitch or relative location of a lenticular lens on a sheet of transparent lenticular material of the type having a repeating pattern of cylindrical lenses on one side and a flat opposite side, comprising the steps of: forming a beam of light; focusing the beam of light into a spot smaller than the pitch of the cylindrical lenses onto the lenticular material; moving the lenticular material relative to the beam in a direction perpendicular to the axes of the cylindrical lenses to modulate the angle of reflection or refraction of the beam of light; and sensing the position of the modulated beam of light to determine the pitch or relative location of lenticular material to the focused spot.

Abstract: A plurality of LEDs are used as a light source for projecting light onto a film negative recording an original image. The LEDs have different respective spectral characteristics, and are provided so as to incline with respect to a light axis, so that light emitted thereby has directivity toward a light axis. By this means, the light emitted by each LED has directivity, thus increasing the light quantity of light projected onto peripheral areas of photographic paper. Accordingly, density unevenness and color unevenness on the photographic paper can be easily distinguished without scattering the light from each LED more than necessary, as was done conventionally. As a result, there is no need for control which attempts to obtain sufficient scattered light by increasing the exposure time or brightness of each LED. Further, there is no need to provide a large number of LEDs, thus simplifying control of the emitted light quantities of the respective LEDs.

Abstract: The optical printer 1 comprises the fluorescent light-emitting tube 2 equipped with the anode 11 in a form of dot and the rotatable rotating filter part 15 equipped with the filters R, G, B. The film 3 is moved relative to the optical printer 1 set at a given position. The controlling means 30 rotates the rotating filter part 15, and, in synchronization with that, the fluorescent light-emitting tube 2 is made to emit light by the image signal of every color of red, green and blue. The image can be formed by moving the film one time relative to irradiation with the light in a state of dot transmitted selectively through each filter of red, green and blue. Since the head is fixed and the film is moved, room for the movement of the head which has been conventionally required is not required. Spatial room for the slide of the filter is not required differently from the slide-switching type-filter of the conventional art.

Abstract: An exposure method and apparatus are provided. The exposure apparatus of the present invention includes a discontinuous exposure unit which discontinuously exposes the scan-end point in a first field to be scanned on an exposure substrate, and also discontinuously exposes the scan-start point in a second field to be scanned on the exposure substrate. The exposure substrate is moved so that the scan-end point in the first field and the scan-start point in the second field overlap with each other to form an intermediate area to be exposed. In the intermediate area, the exposure of the first field and the exposure of the second field are averaged to prevent a difference in width of the intermediate area. This effect can be achieved without prolonging the exposure time.

Abstract: The image recording method and apparatus focus or image a two-dimensional image formed by a group of two-dimensionally disposed light source elements through an optical system on a recording medium which is moving in a relative relation to the group two-dimensionally disposed light source elements. The method and apparatus deflect light from the group of two-dimensionally disposed light source elements to move the image focused on the recording medium in synchronism with a movement of the recording medium such that the image can remain stationary at least in a main scanning direction in a relative relation to the recording medium. The group of two-dimensionally disposed light source elements can be produced by a two-dimensional spatial light modulator illuminated with an illumination light flux.

Abstract: A system for recording and reproducing a color image of a scene includes an image recording apparatus including a body portion for containing components of the apparatus and for housing a roll of black and white silver halide emulsion film. The body portion includes a focal lens for focusing scene illumination to expose the film with the scene image. A color filter disposed in the body portion filters the scene illumination. The filter includes a color filter array having a plurality of adjacent pixel arrays, whereby the scene illumination is pixelated on the black and white film for each array as units of luminance and chrominance information.

Abstract: There is disclosed a light guide for guiding light from a light source in a longitudinal direction and radiating the light to illuminate an object to be illuminated, which comprises a diffuser for diffusing the light from the light source along the longitudinal direction of the light guide, and a radiator for radiating the light diffused by the diffuser in a predetermined direction. By arranging the diffuser and the radiator so that a normal line passing through the center of the width of the diffuser is different from the predetermined direction at least in the vicinity of the light source when viewed in the longitudinal direction of the light guide, the illuminance distribution of the longitudinal direction of the light guide is uniformed.

Abstract: There is disclosed an image-forming method, which comprises: subjecting a color light-sensitive material to exposure, by using, at least, a first, second, and third light-emitting element whose peak wavelength of the light-emission spectrum is in a first wavelength region of 380 to 500 nm, a second wavelength region of 500 to 600 nm, and a third wavelength region of 600 to 740 nm, respectively, and subjecting the exposed color light-sensitive material to development processing, wherein the color light-sensitive material has, at least, spectral sensitivities in the from first to third wavelength regions. There is also disclosed organic light-emitting elements for use as light sources for exposure in the method. According to the method, digital color images exhibiting good color reproduction can be obtained by exposing a light-sensitive material according to image information and carrying out development processing.

Abstract: In a polarized light illumination apparatus, randomly polarized lights emitted from first and second light sources are respectively separated by a polarized light separating and combining element into two different types of polarized lights. Secondary light source images are formed at locations shifted from each other in an x direction, whereby polarization is aligned in the same single direction. At least two condensing mirror plates of first to third condensing mirror plates are shifted in parallel from the center axis of the polarized light separating and combining optical element so that secondary light source images formed by z-polarized lights (polarized in a z direction) emitted from the first and second light sources are superimposed upon each other, and secondary light source images formed by x-polarized lights (polarized in an x direction) emitted from the first and second light sources are superimposed upon each other.

Abstract: An optical printer including a fluorescent light-emitting tube equipped with an anode in a form of dot and a rotatable rotating filter part equipped with filters R, G, B. A film is moved relative to the optical printer set at a given position. A controlling device rotates the rotating filter part, and, in synchronization with that, the fluorescent light-emitting tube is made to emit light by the image signal of every color of red, green and blue. The image can be formed by moving the film one time relative to irradiation with the light in a state of a dot transmitted selectively through each filter of red, green and blue. Since the head is fixed and the film is moved, room for the movement of the head which has been conventionally required is not required. Spatial room for the slide of the filter is not required differently from the slide-switching type-filter of the conventional art.

Abstract: An image forming apparatus for sequentially superimposes images formed by a plurality of image forming stations for forming images of different colors, respectively, on a transferring material born and transported by a transferring material transporting member, which forms a misregister detection mark on the transferring material transporting member, illuminates to read the mark, calculates a misregister amount of the read misregister detection mark, and corrects the misregister of an image based on calculated results, wherein the apparatus adjusts an illuminating light amount according to a color of a misregister detection mark.

Abstract: An object of the present invention is to provide an image forming apparatus for suppressing deviations in the application position of a light emitted from an optical box, thus preventing an image from being deteriorated. Another object of the present invention is to provide an image forming apparatus that has an image bearing body, a light source, a polarizing device for polarizing a light emitted from the light source, a lens for imaging a light polarized by the polarizing device onto the image bearing body, and an optical box for containing at least the light source, the polarizing device, and the lens, wherein the optical box is provided plurally and the plurality of optical boxes are stacked to be integrated.

Abstract: A system is provided for adjusting a photo-exposure time of a manufacturing apparatus for semiconductor devices. The system for adjusting the photo-exposure time includes a photo-exposure unit whose photo-exposure time is adjustable according to one or more adjustment signals, a pre-exposure step influence prediction unit that obtains pre-exposure step processing information and extracts parameters that may influence a resulting pattern during photo-exposure, and provides this information as feed forward data, an inspection unit that checks processed steps during a certain period after photo-exposure and provides an inspection value as a feed back data, and a central processing unit that receives the feed forward and feedback data and, by means of a predetermined calculation method, generates the one or more adjustment signals, which are used to adjust the photo-exposure time.

Abstract: A lens-fitted photo film unit incorporates a mechanism for taking an exposure, and is pre-loaded with unexposed photo film. A telephoto selectable type indicia is imprinted previously on a first edge of the photo film outside imaging frames in an optical manner. An indicia recorder imprints a magnification indicia on a second edge of the photo film outside the imaging frames in an optical manner each time that one exposure is taken. A combination of the telephoto selectable type indicia and the magnification indicia designates a printing condition for each of the imaging frames.

Abstract: An image processing method in which at least one aberration of an optically recorded image selected from among lateral chromatic aberration, distortion, decrease in the brightness of the edge of image field and image blurring is corrected based on lens characteristics of a taking lens and position information of the image. Additionally, an image processing apparatus comprises an acquiring section for acquiring information identifying a taking lens; a storage section for storing lens characteristics associated with the type of the taking lens; and a correcting section which receives the corresponding lens characteristics of the taking lens from the storage section and corrects at least one aberration selected from among lateral chromatic aberration, distortion, decrease in the brightness of the edge of image field and image blurring.

Abstract: A lens-fitted photo film unit incorporates a mechanism for taking an exposure, and is pre-loaded with unexposed photo film. A telephoto selectable type indicia is imprinted previously on a first edge of the photo film outside imaging frames in an optical manner. An indicia recorder imprints a magnification indicia on a second edge of the photo film outside the imaging frames in an optical manner each time that one exposure is taken. A combination of the telephoto selectable type indicia and the magnification indicia designates a printing condition for each of the imaging frames.

Abstract: An optical scanning system for a printer includes an optical scanning unit having a deflector divided into a plurality of deflection regions to allow repetitive scanning of light emitted from a light source by rotation, the optical scanning unit for scanning light onto a photosensitive belt traveling around a plurality of rollers; a first photodetector installed at a position separated from the edge of the photosensitive belt, to be able to receivable light scanned beyond the edge of the photosensitive belt; a second photodetector installed a predetermined distance apart from the first photodetector, to be able to receive light scanned just beyond the edge of the photosensitive belt until the light hits the edge of the photosensitive belt; a scanning reference position signal generator for generating a scanning reference position signal at a point in time at which a signal output from the first photodetector in response to the reception of light, and a signal output from the second photodetector in response t

Abstract: An image processing system for processing digitized color images is described. The image processing system includes a color matching processor that automatically produces an optimized color image from a negative image and its developed print image. The optimized color image processed by the color matching processor has the image resolution and the color appearance of the better one of the negative and the developed print. A method of automatically producing an optimized color image from a negative image and its corresponding print image is also described.

Abstract: An ultra high resolution photographic printing system that generates and rasterizes multiple sub-images synchronized with positioning coordinates that program a moving-matrix light valve during sequentially timed exposures. Diagonal displacement masking operations prepare a 16384×12288 ultra high resolution image for bicubic resampling that generates four unique 4096×3072 intermediate images. These four intermediate images are sieve-sorted based on X and Y modal logic into four unique image sets of 16 unique 1024×768 raster images per set. Each of the 64 unique images sequentially reconstruct a unique “window screen view” of the original high resolution image as dictated by the geometry of the moving-matrix light valve. The moving-matrix light valve is positioned with dual axis micro-stepping motors and leadscrew assemblies. The serial geometry of the light valve RGB elements is sequentially converted to parallel geometry in the printed image.

Abstract: A printer prints a calibration pattern on a leading end portion of a roll of recording paper when the recording paper is loaded in the printer. A cutter cuts the leading end portion off the recording sheet so as to make an end edge rectangular to side edges of the recording sheet. A photometric device measures densities of the printed calibration pattern, and a system controller derives correction values for correcting density or color from the measured densities. After the calibration process, an image is printed in an image recording area on the recording paper following the leading end portion. For a printer that prints an image on a cut sheet recording paper, a calibration pattern is printed on a margin outside an image recording area. After densities of the calibration pattern are measured, the margin with the calibration pattern is cut off the recording paper.

Abstract: The invention relates to an apparatus for producing photographic copies of film negatives on a web-shaped endless material which includes a device for the shining through or scanning of picture originals, whereby a first device for producing the copies on the web-shaped endless material is provided and a second device for producing data or image data fields subsequent to the first device is provided, whereby a material storage (58) is provided between the first and second device, whereby in accordance with the invention the material storage is a space in which the material web with the copies is randomly laid down through an input and removed through an output on demand. (FIG.

Abstract: An image-forming liquid medium comprised of a solution containing a surface-active agent, and at least two types of microcapsule mixed with the solution. A first type of microcapsule is filled with a first dye, and a second type of microcapsule is filled with a second dye. A first shell of the first type microcapsule is formed of a first resin that exhibits a first characteristic such that, when the first type microcapsule is squashed and broken under simultaneous application of a first pressure at a first temperature, the first dye seeps from the squashed and broken microcapsule. A second shell of the second type of microcapsule is formed of a second resin that exhibits a second characteristic such that, when the second type microcapsule is squashed and broken under simultaneous application of a second pressure at a second temperature, the second dye seeps from the squashed and broken microcapsule.

Abstract: A photographic processing system has a first printing section for printing a film image on photographic paper, a second printing section for printing image data which has been converted into a light signal on the photographic paper, and a common developing section for developing the image exposed on the photographic paper by the first or second printing section. The first printing section and the developing section are disposed adjacent to each other at lower part of the system, and the second printing section is disposed above the first printing section.

Abstract: An apparatus and method of printing two-dimensional swaths of area onto a photosensitive media uses at least one reflective liquid crystal spatial light modulator. In the apparatus and method, illumination optics receive light from a light source and image the light at a polarization beamsplitter element. The polarization beamsplitter element images one polarization state of light at the spatial light modulator to create an essentially telecentric illumination at the spatial light modulator.

Abstract: A digital photograph printer comprising a transport mechanism, a modulated light source (1206), and an exposure controller (1302). The transport mechanism for advancing a photosensitive medium (1202) through an exposure region (1200) such that said photosensitive medium advances one row of pixel locations each row period. The modulated light source (1206) is operable to selectively provide a beam of light to an array of individually modulated regions (1300, 1306, 1310) in an exposure region (1200). As the photosensitive medium (1202) moves through the exposure region (1200) the individually modulated regions in the exposure region (1200) have the opportunity to expose each pixel locations in the exposure region (1200) once each row period. The exposure controller (1302) operable to control the modulated light source (1206) based on image data provided to modulated light source.

Abstract: An electronic camera for producing a digital image and a multimode microfluidic printing device for printing such digital image including a parallel associative interface structure having an image sensor in the camera for producing digital images and a microfluidic printing device including a plurality of colored ink reservoirs including several reservoirs for containing different colorants and a plurality of colorant delivery chambers. Circuitry responds to digital image produced by the sensor for image processing the digital image produced by the image sensor for controlling the microfluidic printing device to deliver colorants from the delivery chambers to an image transfer position. An image receiving medium is delivered to such medium to produce a visual image of the digital image.

Abstract: A system for recording and reproducing a color image of a scene includes an image recording apparatus including a body portion for containing components of the apparatus and for housing a roll of black and white silver halide emulsion film. The body portion includes a focal lens for focusing scene illumination to expose the film with the scene image. A color filter disposed in the body portion filters the scene illumination. The filter includes a color filter array having a plurality of adjacent pixel arrays, whereby the scene illumination is pixelated on the black and white film for each array as units of luminance and chrominance information.

Abstract: For the production of a photographic print of an original present in electronic format, optical representations (D) are produced from sequentially changing strip-shaped portions of the original by way of an electro optical, pixel wise operating converter device (3) and these optical representations (D) are projected onto a strip-shaped exposure region (E) on the copy material (P), whereby the strip-shaped exposure region (E) and the copy material (P) are moved relative to one another and at an essentially constant speed in a direction transverse to the longitudinal extent of the strip-shaped exposure regions (E), so that successively the image information of the whole original is exposed onto the total available surface of the copy material (P).

Abstract: Disclosed is a full color printer which comprises a optical writing head for writing a latent image onto a printing paper such as a silver salt-sensitive member. The optical writing head has an array of optical shutter elements each of which is made of PLZT. Red color light, green color light, and blue color light are sequentially projected to the light shutter element, and the drive voltage applied to the light shutter elements is changed synchronized with the color change. To prevent the generation of spike noise, the drive voltage is not changed suddenly, but is changed smoothly.

Abstract: A method for achieving color-appearance matching for an image viewed in different surround conditions, the method comprises the steps of forming signals representing an original image; and mapping the original image signals through a transformation that alters image luminance contrast by a factor of substantially 1.01 to 1.15 for an original image viewed in a light surround to a reproduced image to be viewed in an average surround; substantially 1.01 to 1.22 for an original image viewed in a light surround to a reproduced image to be viewed in dim surround; substantially a range of 1.01 to 1.29 for an original image viewed in a light surround to a reproduced image to be viewed in an dark surround; substantially a range of 1.01 to 1.11 for an original image viewed in an average surround to a reproduced image to be viewed in an dim surround; substantially a range of 1.01 to 1.

Abstract: An operational control device of an image processing apparatus displays set color-balance settings on the corresponding keys with the corresponding figures and bar graphs. It also displays the title of a color-balance setting, as required. This facilitates the confirmation of set processing conditions in storing plural processing conditions for image processing, and also facilitates the selection of stored processing conditions to read. When a magnification is specified in the XY zoom mode, the key indicating that the mode has been specified is displayed. Pressing this key displays the XY zoom setting screen again. This facilitates the confirmation and change of set processing conditions.

Abstract: A color image is recorded on a color photosensitive material by using a spatial light modulator, which comprises a photoconductive layer and an electro-optic material layer located with an insulating multi-layer film mirror intervening therebetween. An optical pattern is inputted from the side of the photoconductive layer and written into the spatial light modulator. Reading light is irradiated from the side of the electro-optic material layer and reflected from the multi-layer film mirror, and the written optical pattern is thereby read from the spatial light modulator.

Abstract: A method for aligning multiple image layers to form a composite image in which the individual single color images are aligned by systems of at least one registration hole which is round and permits no movement of the film.

Abstract: A color printer prints a color image on photosensitive material by utilizing a digital micromirror device. The digital micromirror device is provided with four micromirror arrays constituted of plural micromirrors. The four micromirror arrays record four lines on a photographic paper at the same time while the photographic paper is successively advanced at constant velocity. Red exposure sequence, green exposure sequence and blue exposure sequence are performed in order while the photographic paper is advanced by L. Each of the exposure sequences is changed in order every advancement of photographic paper by L/3. The photographic paper passes through four lines projected by the four micromirror arrays in order. Accordingly, a pixel on the photographic paper is exposed four times at the ceiling by four micromirrors arranged on a same row for each color. Accordingly, multiple exposure is performed during advancement of the photographic paper.

Abstract: The present invention provides a film cartridge which can be looked up easily and a film image input system which can obtain a high quality image by using the film cartridge. The image signal of each frame image, of which the image quality is adjusted, is recorded in the EEPROM of the image record unit to be mounted on the film cartridge, in which the photo film is stored in a roll, so as to correspond to the frame number while the developed photo film is printed. And, the film image input system controls the adding circuit, the multiplying circuit and the gamma correction circuit based on the respective R, G, B color signals, which are respectively outputted to the black level controller, the white level controller and the gradation controller from the EEPROM, and outputs an image signal, which has the same gradation characteristics as that of the image signal which is recorded in the EEPROM, to the encoder.

Abstract: An average density of an image is calculated based on image data of an original and a calculated average density is compared with a previously determined threshold value. When the average density is less than or equal to the threshold value, the image is recorded on a negative photosensitive material of which density becomes higher with an increase in exposure amount. When the average density exceeds the threshold value, the image is recorded on a positive photosensitive material of which density becomes low with an increase in exposure amount. When the average density is less than or equal to the threshold value and the image is recorded on the positive photosensitive material, a density value of image data is converted to be suitable for the positive photosensitive material and when the average density exceeds the threshold value and the image is recorded on the negative photosensitive material, a density value of image data is converted to be suitable for the negative photosensitive material.

Abstract: An image exposing device which, on the basis of image data, modulates light beams outputted from three light sources having respectively different wavelengths, and which scans/exposes the light beams onto a photosensitive material. The three light sources includes a first light source having a light-emitting peak wavelength in a vicinity of 635 nm, a second light source having a light-emitting peak wavelength in a range of 670 to 710 nm, and a third light source having a light-emitting peak wavelength in a vicinity of 780 nm. The photosensitive material includes a first photosensitive layer having a peak spectral sensitivity corresponding to the first light source, a second photosensitive layer having a peak spectral sensitivity corresponding to the second light source, and a third photosensitive layer having a peak spectral sensitivity corresponding to the third light source.

Abstract: An improved method for producing multicolor photographic images which resemble color photographs made prior to 1936. Light expressing a photographic image is passed through a transparent multicolor screen (20). Visual characteristics of the image are altered so as to produce darkened tonality, loss of acuteness, muting of hue, and a general sepia color cast.

Abstract: A photographic printer for displaying an image on a liquid crystal panel, irradiating the light from a light source on said liquid crystal panel and exposing said image on a photosensitive material for a predetermined exposure time by the light transmitted through said liquid crystal panel is disclosed. Further, a method for controlling an exposure in such a photographic printer is disclosed. Before displaying an image on the liquid crystal panel, the drive voltage for producing a predetermined transmitted light amount is measured. On the basis of the difference between the measured voltage and the theoretical voltage for producing the predetermined transmitted light amount, an offset value of the drive voltage is adjusted. Accordingly, the operational error of the printer due to temperature change, due to the difference of the light transmittance between crystal panels, or due to the difference of the characteristic of voltage v.s. light transmittance between crystal panels is reduced.

Abstract: An ultra high resolution photographic printing system that generates and rasterizes multiple sub-images synchronized with positioning coordinates that program a moving-matrix light valve during sequentially timed exposures. Diagonal displacement masking operations prepare a 16384.times.12288 ultra high resolution image for bicubic resampling that generates four unique 4096.times.3072 intermediate images. These four intermediate images are sieve-sorted based on X and Y modal logic into four unique image sets of 16 unique 1024.times.768 raster images per set. Each of the 64 unique images sequentially reconstruct a unique "window screen view" of the original high resolution image as dictated by the geometry of the moving-matrix light valve. The moving-matrix light valve is positioned with dual axis micro-stepping motors and leadscrew assemblies. The serial geometry of the light valve RGB elements is sequentially converted to parallel geometry in the printed image.

Abstract: A method of correcting the light amount irregularities for a photographic printer in which an image displayed on a two-dimensional display unit is exposed by transmitting or reflecting the light from a light source through or from the two-dimensional display unit is disclosed. An LED light source is turned on with a predetermined driving voltage applied to all the pixels of a liquid crystal panel. The image on the liquid crystal panel is exposed for a predetermined length of time by the light transmitted through the liquid crystal panel and developed thereby to produce a photographic print. The density at a point corresponding to each pixel of the liquid crystal panel is measured. The light transmittance correction amount for each pixel of the liquid crystal panel is determined in such a manner that the density measured at each point conforms to a predetermined reference density (a minimum value of density measurement, for example).

Abstract: A method for producing a luminous beam uses a chromatic element which can be shifted with respect to the beam axis. The chromatic element is arranged in a precise point inside the optical equipment for which the element is designed. The chromatic element or filter is arranged in an optical zone called the "pupil" and consists of plurality of circular sectors which are equal to each other, for instance each sector may occupy 120 degrees. The sectors each have different colors. The so-obtained filter is thus positioned in the pupil zone in such a way that the filter may be shifted orthogonally to the optical axis in order to choose and/or use or select an infinite range of colors or chromatic or luminous intensities.

Abstract: A split image exposure method capable of realizing high-resolution and high-quality exposure of an image by suppressing discontinuity of density and color in junctions between split images when the original image divided into a plurality of subdivisions is exposed using a planar element. A LCD panel can be positioned at four different locations in a horizontal plane, and it receives light from a light source in respective locations and can print a transmission image onto a color printing paper through a projection lens system by exposure. A reference mark is captured based on a difference in the amounts of light received by light receiving portions of the sensor, whereby the positioning of the LCD panel can be completed. The occupancy ratio of image data representing each split image is varied in double-exposed or fourfold-exposure areas, and the density of each pixel of the liquid crystal panel is controlled in accordance with this occupancy ratio.

Abstract: The improved method of determining the amount of exposure for use with an image forming apparatus reads the red, green and blue densities of an original image on a pixel basis and determines the amount of exposure of a light-sensitive material in accordance with the result of the reading step. In the method, those pixels of the same color which have been found to have red, green and blue densities within respective predetermined ranges as a result of the reading of said original image are added and after at least part of the pixels that represent a color having a greater number of pixels than a specified value are removed, the remaining pixels are used to perform mathematical operations for determining the amount of exposure.

Abstract: Respective light-emitting elements are caused to emit light at the maximum rated outputs and densities of three colors developed by a photosensitive material are made substantially uniform. The maximum rated outputs at light-emitting central wavelengths, of the three-color light-emitting elements are respectively 2.4 mW, 0.04 mW and 1.2 mW. The ratio between the outputs is represented as R:G:B=60:1:30. On the other hand, the ratio between spectral sensitivities of the most-frequently used photosensitive material is represented as R:G:B=1:30:2. An exposure-value ratio on the photosensitive material, which is synthetically obtained from these, reaches R:G:B=2:1:2. Thus, the numerical ratio among the light-emitting elements, for making exposure values uniform becomes R:G:B=1:2:1. The numbers of the respective light-emitting elements are defined so as to reach the least numbers from the numerical ratio (i.e., one R-light-emitting element, two G-light-emitting elements and one B-light-emitting element).

Abstract: An exposure apparatus capable of color exposure operation and monochrome exposure operation. When a color exposure operation request is made, at least one of a red, blue, or green filter is positioned in a light path to produce exposure light having a predetermined wavelength. When a monochrome operation request is made, the color filters are retracted so as to allow white exposure light to pass.

Abstract: A transfer imaging system is disclosed wherein images are formed by image-wise exposing a layer comprising a chromogenic material and pressure rupturable capsules containing, as an internal phase, a photosensitive composition. In a preferred embodiment, the chromogenic material is encapsulated with the photosensitive composition. Upon exposure and capsule rupture the chromogenic material is image-wise transferrable to a developer or copy sheet where the chromogenic material reacts with a developer to form an image. Preferred systems are sensitive to U.V. or blue light in the wavelength range of 380 to 480 nm.