Abstract: An electrostatic recording apparatus wherein a fixing device can be pulled out from a predetermined operating position, a transfer portion is separated from an image retainer and the pressure contact between a fixing roller and a press roller is released in operative connection with the operation of pulling out the fixing device.

Abstract: Disclosed are silver halide grains which have crystal faces defined by Miller indices of (nnl) where n.gtoreq.

Abstract: According to a method and apparatus for estimating a halftone image, a unit area is set and shifted by a focusing lens and a photoelectric transducer in a binary image consisting of black and white regions, and the halftone image is estimated on the basis of a ratio of the white regions to the black regions within each unit area. The number of white pixels is counted by an A/D converter. When different unit areas are used, a specific one satisfying predetermined conditions is selected and shifted in the binary image, and prestored image data is read out from RAMs by column and row address generators and calculated to obtain a halftone estimated value within each unit area. The binary image can be thus a Bayer dither image or a digital binary image.

Abstract: An image forming method having the step of forming a first latent image by subjecting an image retainer with a photoconductive layer to a first image exposure; developing the first latent image with first toner; forming a second latent image by a second image exposure; developing the second latent image with second toner, wherein the transmissivity of the first toner is sufficiently high for an irradiating ray used for the second image exposure. For the image exposure a ray which has such a wavelength distribution as to substantially transmit the respective toners composing a toner image formed already on the electrostatic photosensitive member when the image is exposed.

Abstract: An image reproducing apparatus wherein a heat generating member is disposed in the proximity of a roller fixing device at the side of a charge receptor from which a transfer sheet is introduced to the fixing device. The roller fixing device is a heat roller fixer and the heat generating member is a plate-shaped heat generating member disposed at the lower side of conveying path for the transfer sheet.

Abstract: Disclosed is a photoreceptor for electrophotography comprised of a charge carrier generating material and charge transport material wherein one charge generating material is a metal phthalocyanine or a metal-free phthalocyanine. The layer containing the generator material also contains an organic amine.

Abstract: In a thermal transfer recording medium having (i) a support, (ii) a heat-fusible layer containing a heat-fusible substance and (iii) a thermoplastic layer containing a thermoplastic polymer, at least one of said layers containing a colorant, the improvement wherein at least one of said heat-fusible layer and said thermoplastic layer contains a fluorine type surfactant.According to the invention, a thermal transfer recording medium having uniform smooth surface by coating, and yet affording printing of high quality on both smooth paper and rough paper can be obtained.

Abstract: A light-sensitive silver halide photographic material having a support and at least one silver halide emulsion layer on the support. At least one layer of the silver halide emulsion layer contains a compound of the Formula I ##STR1## wherein Z represents a group of non-metallic atoms necessary to complete a nitrogen-containing heterocyclic ring which may have a substituent; X represents a hydrogen atom or a substituent capable of being split off upon reaction with an oxidation product of a color developing agent; and R represents a hydrogen atom or a substituent; and a compound represented by formula 1R.sup.1 (O).sub.n SO.sub.3 Mwherein R.sup.1 represents an alkyl group; M represents a hydrogen atom or a cation and n is 0 or 1.

Abstract: There is disclosed a thermal transfer recording medium having a colorant layer containing a heat-fusible substance and a colorant formed on a support, the colorant comprising a copolymer obtained from an ethylene, an acrylic acid derivative represented by the formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a methyl group and R.sup.2 represents a straight or branched alkyl group having 1 to 8 carbon atoms,and a maleic anhydride, and may further contain polyoxyethylene type compound.

Abstract: A radiation image storage panel having a stimulable phosphor layer provided on a substrate with a honeycomb structure constituted of a number of cells partitioned by wall members filled with the stimulable phosphor is prepared by forming the substrate for phosphor layer by casting in a mother mold or etching of the substrate and filling the cells on the substrate with the stimulable phosphor. This radiation image storage panel can give images of markedly improved sharpness.

Abstract: There is disclosed a light-sensitive silver halide photographic material having a silver halide emulsion layer containing a coupler on a support, comprising at least one of the metal complexes having a quenching constant of singlet oxygen of 3.times.10.sup.7 M.sup.-1.sec.sup.-1 or higher and at least one of oil-soluble dyes, and which may further comprise at least one of the magenta couplers represented by the formula (I) shown below: ##STR1## wherein Z represents a group of non-metal atoms necessary for formation of a nitrogen-containing heterocyclic ring, and the ring formed by the Z may have substituents; X represents a hydrogen atom or a substituent eliminable through the reaction with the oxidized product of a color developing agent; and R represents a hydrogen atom or a substituent.

Abstract: Disclosed is a light-sensitive silver halide photographic material comprising at least one layer of green-sensitive silver halide emulsion layer (GH), at least one layer of red-sensitive silver halide emulsion layer (RH) and a plural number of blue-sensitive silver halide emulsion layers with different sensitivities, provided on a support, which is characterized in that one of the said plural number of blue-sensitive silver halide emulsion layers is provided as a silver halide emulsion layer (BH) positioned at the farthest side from the support, at least one layer GH and at least one layer RH are provided between the layer BH and a blue-sensitive silver halide emulsion layer lower in sensitivity than the layer BH, and further fine grains of silver halide are contained in at least one of the said blue-sensitive emulsion layer of lower sensitivity and a layer adjacent thereto. The fine grains of silver halide may have a blue-sensitive sensitizing dye adsorbed on the surfaces thereof.

Abstract: An information recording medium such as a magneto-optical recording medium is disclosed. The medium comprises two pieces of recording elements. Each element comprises a support and a recording layer provided on a part of one surface of the support. The two pieces of the elements adhere to each other by a non-corrosion-causing adhesive provided on a part of said surface where a recording layer is provided and a fast-hardening adhesive provided on a part of the surface where no recording layer is provided. The time required to adhere the two pieces of the elements can be considerably decreased and the corrosion of the recording layer by the adhesive can be avoided.

Abstract: In a light-sensitive direct posi silver halide color photographic material having photographic constituent layers comprising at least one silver halide emulsion layer containing latent image type silver halide grains not previously fogged, which is capable of giving a direct posi image by subjecting the whole surface to exposure or effecting surface development in the presence of a fogging agent, after image exposure, the improvement wherein said internal latent image type silver halide grains are composed of at least two groups of internal latent image type silver halide grains having average grain sizes different from each other, and at least one compound capable of releasing a development inhibiting substance or its precursor through the reaction with the oxidized product of a color developing agent is contained in at least one layer of said photographic constituent layers.

Abstract: A method for processing a light-sensitive silver halide color photographic material by processing a light-sensitive silver halide color photographic material with a processing solution having a fixing ability and subsequently processing the fixed material with a water washing-substitutive stabilizing solution substantially without carrying out washing with water, which comprises carrying out processing with the water washing-substitutive stabilizing solution which has been subjected to concentration regulating treatment in the presence of at least one of the compounds represented by the following formulae [I], [II], [II'] and [II"]: ##STR1##

Abstract: A hand-held copying apparatus has a reading window of a read division disposed on a leading end outwardly of two parallel rollers which define a reference plane placed on the surface to be read. A storage division for storing information read by the read division is provided integrally with the read division, and information stored in the storage division is recorded through a recording head which is moved relatively along a recording paper at a speed corresponding to the moving speed of the apparatus detected by a movement encoder mechanism.

Abstract: A magnetic recording medium containing iron carbide is disclosed. Iron carbide shows electric conductivity and low light transmission. Therefor an antistatic property and light shielding ability of the medium are improved. Iron carbide is contained in the magnetic layer of the medium in combined with the other ferromagnetic materials such as Co-adhered-.gamma.-Fe.sub.2 O.sub.3 or hexagonal ferrite. An amount of iron carbide in the magnetic layer is within the range of from 1.5 to 15% of the magnetic layer by volume.

Abstract: A camera comprising a lens unit which is slidable between two stoppers along an optical axis for varying a focal length thereof, a lens unit driving member having at least two sections which are connected to circumferential parts of the lens unit, means for providing the lens unit driving member with driving force, and a stroke absorbing member through which the driving force is transferred to the lens units, whereby the lens unit is capable of being resiliently pressed toward the stoppers when the means for providing driving force is overrunning.

Abstract: A process for forming a printing plate use a specific electrophotographic material for obtaining a toner image which comprises a support and a layer for obtaining an electrostatic latent image coated thereon, said layer being composed mainly of a phenol resin containing a phthalocyanine pigment and having a specific repeating unit.

Abstract: A light-shielding apparatus of a camera having a collapsible barrel provides a fixed cylindrical light-shielding member between a movable portion of the collapsible barrel and a frame of a camera body. The outer surface of the light-shielding fixed member can be overlapped with the movable portion.