Abstract: A full color recording material which has, on a support, at least three silver halide photosensitive emulsion layers which have different color sensitivities and which contain a yellow coupler, magenta coupler and cyan coupler, respectively, and in which at least two of these layers are selectively spectrally sensitized to match semiconductor laser light beams of wavelengths greater than 670 nm, wherein said at least three silver halide photosensitive layers which have different color sensitivities each contains silver chlorobromide grains with a layer average silver chloride content of at least 96 mol %, and said silver chlorobromide grains have a silver bromide local phase of which the silver bromide content is higher than that of the surroundings and a method for forming color images wherein the recording material is imagewise exposed while being transported at a feed rate which matches the scanning rate with semiconductor light beams, and substantially continuously to the exposing, the material is subject

Abstract: The essential feature of the color image recording apparatus of the present invention is that it uses a laser light source capable of simultaneous emission of laser beams associated with exposure to R, G and B light. The apparatus also uses a light deflector and a device for selectively reflecting or transmitting said laser beams, for example, a rotating polygonal mirror in which at least one of the reflecting faces has a different spectral characteristic of reflection than other faces or a light deflector and at least one color filter that operates in synchronism with the light deflector.In the present invention, a laser beam having a wavelength associated with exposure to light either one or R, G and B colors is separated from the light beams emitted from the laser light source, and the recording material is exposed to successive beams of different colors, one for each scanning line, to insure exposure for a full-color image by three scanning lines.

Abstract: A semiconductor laser drive device includes a pulse-width modulation circuit for producing a pulse-width-modulated signal having a first number of gradations in response to a first image signal, and a pulse-amplitude modulation circuit for producing a pulse-amplitude-modulated signal having a second number of gradations in response to a second image signal, the pulse-amplitude-modulated signal having an amplitude of zero when the semiconductor laser radiates no emission and having an amplitude for maintaining a predetermined emission mode from the semiconductor laser when the semiconductor laser radiates the emission. The semiconductor laser is supplied with a signal having a number of gradations determined by a combination of the pulse-width-modulated signal and the pulse-amplitude-modulated signal.

Abstract: A copying machine for forming images using either ordinary color photosensitive materials or thermodeveloping photosensitive materials. The copying machine reproduces color images of high quality using a simple and small-scale device without the need for several exposure stages or complicated development processing. The copying machine comprises an image reading device which obtains a trichromatic separated signal by reading an original by photoelectric scanning, an image processing device which effects the desired image processing on the trichromatic separated signal which has been read, an exposure device which trichromatically exposes thermodevelopment and color-sensitive materials by means of the output signal from the image processing device, and a thermodevelopment and transfer device which thermally develops the exposed color-sensitive material and thermally transfers an image to image-receiving materials.

Abstract: The image recording apparatus of the present invention receives data, such as the recording time interval for recording a predetermined unit of image information, and the speed of transmission of the image information coming from an image information source, and, based on the image information transmission speed and the scanning period of an optical deflector, sets the recording time interval for recording the image to an integer multiple of the scanning speed of the optical deflector, and determines and controls the transport speed of a recording material in accordance with the recording time interval. This image recording apparatus is adaptable to various image information sources (host, interface) with a wide range of transmission speeds without having to use an expensive buffer memory.

Abstract: An image recording apparatus for recording an image by controlling the scanning and irradiation of a photosensitive material with a number of optical beams having different wavelengths. The image recording apparatus includes light emitting devices disposed close to one another in a common plane for irradiating the number of beams in parallel with a scanning line. The apparatus further includes a rotatable polygon mirror having reflecting faces for reflecting the irradiated optical beams from the light emitting devices for scanning and exposing the photosensitive material. The light emitting devices are arranged to irradiate the reflecting faces of the polygon mirror at a substantially common point.

Abstract: A photosensitive material is exposed to light from a light source in an exposure corresponding to the image density of each picture element by selecting a plurality of light output modulation steps from the light output of the light source, selecting a plurality of exposure time modulation steps, computing the exposure as sets of a light output modulation step and an exposure time modulation step, selecting from them a set corresponding to the maximum exposure time modulation step as exposure parameters, and exposing the photosensitive material in accordance with the selected exposure parameters. An exposure apparatus for carrying out such optimum exposure include a light source, a light detector, an exposure parameter computing unit, and a driver for the light source.

Abstract: In an image recording apparatus in which a photosensitive material is scanned simultaneously with a plurality of light beams different in wavelength to record an image, a line synchronization sensor detects the scanning synchronization of one of the light beams which is selected as a reference light beam, a one-dimensional array sensor spaced a certain distance from the line synchronization sensor in the scanning direction detects the light beams, and the output signals of the sensors are utilized to detect the shift in irradiating position of each of the light beams, whereby the timing of application of the light beams is controlled.

Abstract: A multi-mode image recording apparatus which can record on a common photo-sensitive sheet either an analog color image produced by reflecting white light off an original or a digital color image produced by modulating one or more infrared lasers according to an electrical signal. The photo-sensitive sheet is sensitive to three bands of visible radiation and to at least one band of infrared and is developed by pressure to three visible colors.

Abstract: In a period varying beam recorder comprising a light source for emitting a light beam carrying picture information and an optical deflector for deflecting the light beam in a plane, wherein the light beam is directed to a photosensitive material or member to conduct primary scanning, and the light beam is deflected in the plane at least over an effective scanning width necessary for the primary scanning of the photosensitive material or member, photodetectors are disposed outside opposite ends of the effective scanning width for detecting the light beam for determining a scanning time over the effective scanning width, and an image processing circuit is provided for controlledly producing a picture element sync signal and for carrying picture information on the light beam in accordance with the sync signal, whereby the picture element sync signal has a variable period and the period of the picture element sync signal is controlled on the basis of the scanning time such that the exposure timing of each picture

Abstract: An image forming method which enables switching between a frame sequential system and a dot sequential system, thereby providing a color recording system of reduced cost and which is capable of an increased speed of recording operation. Three separate light-emitting elements are provided emitting light in three primary colors. Simultaneous three-color exposure or sequential monochromatic exposure of a photosensitive material is selected in reseponse to a three-color light signal derived from an original document or the like, and the light-emitting elements are then driven either simultaneously or separately.

Abstract: A picture recording apparatus in which two kinds of picture forming materials are accurately superimposed on one another, such as with a predetermined displacement therebetween. The apparatus includes a pair of forward end detector switches disposed along the conveying paths or the respective picture forming materials immediately before a position where the picture forming materials are to be superimposed on one another for detecting respective forward ends of the picture forming materials. A superimposition control device is responsive to a detection signal from one of the pair of forward end detector switches for one of the picture forming materials to stop conveyance of the one picture forming material and which is responsive to a detection signal from the other of the pair of forward end detector switches for the other picture forming material to control re-conveyance of the one picture forming material at a desired timing to effect correct superposition between the two picture forming materials.

Abstract: The tonality of a produced color image transferred to an image receiving material is measured. The differences between equivalent neutral shades of a reference color image and equivalent neutral shades of the reproduced color image are compared to calculate tonal correction values for corrected equivalent neutral shades. Tonality correction means is controlled on the basis of said tonal correction values.