Abstract: Disclosed is an optical pickup device for use in an optical disk unit, which comprises a moving optical system and a fixed optical system. The moving optical system has a focussing lens confronting a disk-shaped information-recording medium and moves linearly in the radial direction of the information-recording medium. On the fixed optical system are disposed a beam-deflecting lens as tracking means and a relay lens for conjugating the position of the principal point of this beam-deflecting lens with the position of the focal point on the beam-incident side of the object lens when the moving optical system is present at an intermediate position within the moving range of the moving optical system. In the optical pickup device having this structure, track offset can be diminished over the entire reproduction region, and since no tracking means is disposed in the moving optical system, high-speed excess can be easily performed.

Abstract: The invention provides a method of transferring an image from a transferring medium onto a record sheet. The method includes steps of setting a record sheet on a rotatable drum; superposing a transferring medium, in which only an image to be transferred is formed on a support material of the transferring medium, on the record sheet; and pressing the transferring medium and the record sheet onto the drum by a pressing roller while rotating the drum so that only the image is transferred to the record sheet.

Abstract: A fail-safe apparatus for an image forming apparatus includes a central processing unit (CPU), a drive section or load, a disconnecting circuit, and a watchdog circuit. The CPU controls an image forming sequence. The drive section or load is controlled by the CPU through an input-output controller. The disconcerting circuit disconnects power supply to the drive section or load upon reception of a trigger signal. The watchdog circuit monitors an operation of the CPU so as to output a reset signal to the CPU and the input-output controller upon detection of an operation abnormality, and to output the trigger signal to the disconnecting circuit.

Abstract: A developing device for use in an image recording apparatus, comprising: a developer stirrer which stirs toner and carrier in order to prepare the compostion of developer; a developer supplier which supplies the developer prepared by the developer stirrer; a developer holder which attracts the developer supplied by the developer supplier onto its surface, conveys the developer to the development region; a height regulator which regulates the layer thickness of the developer attracted onto the surface of the developer holder; a developer remover which removes the residual developer from the surface of the developer holder after development; a magnetic conveyor which conveys the developer removed from the developer holder to the region of the developer stirrer; and a mechanical conveyor which is placed in the region between the magnetic conveyor and the developer stirrer, which removes the developer attracted onto the surface of the magnetic conveyor, and moves the removed developer toward the region between th

Abstract: A silver halide photographic light-sensitive material which contains a noble 2-equivalent yellow coupler having an excellent color forming property and an improved dispersion stability in emulsion is disclosed.

Abstract: A swinging camera includes a distance measuring section, an automatic release section, a rotating section, an angle detecting section, a determining section, a storage section, and a control section. The rotating section rotates the camera within one plane. The angle detecting section detects a rotational angle of the camera set by the rotating section and outputs rotational angle data. The determining section operates the distance measuring section in unit of a predetermined angle while the camera is rotated by at least one revolution by operating the rotating section prior to photography, and determines on the basis of output distance data and/or rotational angle data whether objects to be photographed are people. The storage section stores only rotational angle data of objects determined to be people, of rotational angle data output from the angle detecting section.

Abstract: A magnetic recording medium having excellent properties is disclosed. The recording medium comprises a non-magnetic support and provided thereon at least two magnetic layers, wherein the lower magnetic layer of the at least two layers has a Young's modulus which is larger than that of the upper magnetic layer and is not less than 800 kg/mm.sup.2.

Abstract: In the improved method of processing an imagewise exposed silver halide photographic material that has photographic constituent layers on a side of a support with an automatic processor, comprising:circulating a fixing solution in a fixing bath being discharged in a volume of 30-200% per minute of a capacity of said fixing bath and at a flow rate of not less than 20 m per minute,wherein said silver halide photographic material has a gelatin content of not more than 3.0 g/m.sup.2 in said photographic constituent layers, andsaid photographic constituent layers comprise a silver emulsion layer which contains silver halide grains having a (100) face to (111) face area ratio of not less than 5.

Abstract: A toner density control method wherein a change in a toner density when a developer of a standard density is stirred, a correction coefficient is calculated from the change, and a toner density of the developer of the standard density under stable condition is calculated from the toner density of the developer which has been stirred and from the correction coefficient, in order to control the toner density.

Abstract: The present invention relates to a heat-developable light-sensitive material, or a light-sensitive material that produces image by development through dry heat treatment. The present invention provides a heat-developable light-sensitive material that achieves high sensitivity while experiencing a reduced degree of thermal fogging by employing core/shell type silver halide grains that contain 4-40 mol % of silver iodide and which have a lower silver iodide content in the surface layer than in the internal phase.

Abstract: The invention provides an apparatus for forming a color toner image on a photoreceptor belt. The photoreceptor belt is stretched to form a loop around a plurality of rollers and installed in a cartridge which is made to be detachable from the apparatus. The cartridge is made to additionally house a container for collecting residual toner removed from the photoreceptor belt or a toner supply unit for supplying toner to a plurality of developing devices.

Abstract: A color correction apparatus including a memory for storing a plurality of combinations of basic colors, each of the combinations of basic colors being obtained by combining a plurality of basic colors. Weighting information storage is provided for storing predetermined mixing ratios of the plurality of basic colors for intermediate colors to be obtained. A calculator is provided for calculating color image data corresponding to the input color image data by processing the combination of basic colors in relation to the mixing ratios.

Abstract: A charge eliminating device for use with a photoreceptor drum. The device eliminates a charge on a required portion of the surface of a photoreceptor drum so that an electrostatic latent image is eliminated on the required portion. The device includes a circuit board for holding an electrical circuit on its surface, the circuit board having a line-shaped edge disposed to face the surface of the photoreceptor drum. A plurality of light emitting elements are disposed on the circuit board to emit light in parallel to the surface of the circuit board in the direction of the line-shaped edge of the circuit board. The device further includes a housing having a plurality of compartments each of which encloses one of the plurality of light emitting elements on the circuit board and has an opening at the line-shaped edge for passing the emitted light in parallel to the surface of the circuit board to the surface of the photoreceptor.

Abstract: A magnetic recording medium containing a specific binder resin is disclosed. The magnetic recording medium comprising a magnetic layer which contains a magnetic powder and a binder, in which the binder comprises a polyurethane resin having an anionic functional group being in a form of intramolecular salt; and the magnetic powder is selected from the group consisting of a ferro-magnetic cobalt-containing iron oxide powder, a ferro-magnetic chromium dioxide powder anad a magnetic metal powder containing iron atoms and aluminum atoms in a portion of from 100:1 to 100:20 in terms of the number of atoms.

Abstract: An image processing apparatus for processing an image signal, comprising a clock for generating a periodical clock signal, a pattern signal generator for generating 2N (where N is a positive integer) pattern signals, each of the pattern signals having a constant wave-form, a wave length of 2N times longer than that of the periodical clock signal and a phase difference 360/2N relative to another one of the pattern signals, a comparator for comparing the pattern signals with the image signal and for generating 2N of comparison signals, and a composition generator for combining said 2N comparison signals and for generating a pulse-duration modulated signal from the combined 2N comparison signals.

Abstract: A thermal transfer recording medium having a support and provided thereon, plural heat softening layers is disclosed.

Abstract: The invention provides a color image forming apparatus with photoreceptor belt. In a roll of the photoreceptor belt provided two pieces of rotatable rollers and guide plate with a curved surface so that the photoreceptor belt is moved while slidably coming in contact with the curved surface of the guide plate. Along the outer surface of the roll of the photoreceptor belt provided a plurality of developing devices at the curved surface to form a color toner image on the photoreceptor belt.

Abstract: A silver halide light-sensitive photographic material which is capable to form magenta dye image of substantially improved light-fastness and to form non-colored portion free from Y-stain is disclosed. The material comprises compounds represented by general formula M-I and II in the layers separately or together.

Abstract: A method for forming color photographic images is disclosed. The method comprises steps ofimagewise exposing to light a silver halide color photographic light-sensitive materialdeveloping the light-sensitive material with a color developer,bleaching, immediately after the step of developing, the light-sensitive material with a bleacing solution, andtreating the bleached light-sensitive material with a solution having fixing capablility, whereinthe light-sensitive material comprises a support and hydrophilic colloid layers including a silver halide emulsion layer provided on a side of the support, and a total dry thickness of the hydrophilic colloid layers is not more than 17 .mu.m, andthe bleaching solution contains a ferric complex salt of a compound represented by the following formula in an amount of within the range of from 0.002 mole to 9.4 mole per liter of the bleaching solution; ##STR1## wherein A.sub.1, through A.sub.4 are each a --CH.sub.2 OH group, a --COOM, or a --PO.sub.3 M.sup.1 M.sup.2.

Abstract: A zoom lens comprising, in order from an object side, a first lens group having a positive refracting power, a second lens group having a negative refracting power and movable to vary the power, a third lens group having a negative refracting power and movable to compensate for deviation of an image position caused by varying the power, a fourth lens group having a positive refracting power for making a divergent luminous flux which exits from the third lens group substantially afocal, and a fifth lens group having a positive refraction power to an image, wherein the fourth lens group includes at least one positive single lens having a strong convex surface on the image side, the fifth lens group arranged behind a diaphragm between the fourth and the fifth lens groups and the fifth lens group comprises, in order from an object side, a front unit having a positive refracting power and a rear unit having a refracting power arranged in an air spaced relation with the front unit.