Abstract: The present invention provides a dye precursor for forming color through contact with a base and which is represented by either of the following formulas (1) and (2): wherein Ar represents an aromatic ring or a heterocyclic ring, each of which may have a substituent; Cp represents a coupler residue; L1 represents a protective group which can be eliminated by a base; and L2 represents an elimination group or a protective group which is eliminated after L1 is eliminated. Further, the present invention provides an image forming material and an image forming method, wherein the image forming material has an image forming layer on a support, the image forming layer containing at least one type of each of a photopolymerization initiator, a dye precursor which can form color through contact with a base, a base or a base precursor, and a polymerizable compound.

Abstract: A color filter having a light-transmissive support and two or more color-developing layers, which develop hues differing from each other, laminated on the support. Each color-developing layer is developed into a predetermined color pattern including pixels. The pixels of the developed color patterns of the layers either overlap in a direction of lamination or do not overlap in the direction of lamination. Also provided are a color filter forming material produced by laminating the two or more photosensitive and heat-sensitive color-developing layers on the light-transmissive support, and a process for producing a color filter by exposing each photosensitive and heat-sensitive color-developing layer of the above color filter forming material to form a predetermined pattern, heating the photosensitive and heat-sensitive color-developing layers, and fixing the developed color patterns.

Abstract: The present invention related to an azomethine dye precursor represented by the following general formula (1) and the image-forming material and image-forming method using the azomethine dye precursor: wherein Ar represents an aryl group or a heterocyclic group which may each have a substituent; X represents a bivalent group linking a carbon atom and a nitrogen atom; and Cp represent a coupler residue which may or may not form a ring.

Abstract: A fixing unit for a copying machine has a heating roller having a heating portion therein, and a press roller provided in rolling contact with the heating roller. The heating roller has a paper passing region which comes into contact with a copy medium of any size, and a paper non-passing region which does not come into contact with a copy sheet of any size. A fixing control unit for the fixing unit controls the heating portion such that a temperature of the paper passing region of the heating roller becomes a predetermined temperature, and controls image forming operation of an image forming unit and convey operation of sheet convey mechanism in accordance with a size of a copy sheet to be fed next, and a temperature of the paper non-passing region.

Abstract: The present invention related to an azomethine dye precursor represented by the following general formula (1) and the image-forming material and image-forming method using the azomethine dye precursor: wherein Ar represents an aryl group or a heterocyclic group which may each have a substituent; X represents a bivalent group linking a carbon atom and a nitrogen atom; and Cp represent a coupler residue which may or may not form a ring.

Abstract: A recording medium comprising a support having thereon a recording layer comprising an organic silver salt, a developing agent for the organic silver salt, a water-soluble binder and an antifoggant in an amount of from 10 mol % to 40 mol % based on the organic silver salt. The recording material has a long shelf life and provides a high-density image.

Abstract: An aluminate complex represented by formula (I): ##STR1## with the groups in the aluminate complex as defined in the specification, and which is capable of radical generation upon photoexcitation; a photopolymerizable composition comprising an ethylenically unsaturated polymerizable compound and the aluminate complex; and an image-forming material comprising a support, an organoaluminum compound anion represented by formula (I'): ##STR2## with the groups in the organoaluminum compound anion as defined in the specification, and a photobleachable dye; are disclosed.

Abstract: A novel light-sensitive bistrihalomethyl-s-triazine compound is provided, which is represented by the general formula (I): ##STR1## wherein T represents a (4,6-bistrihalomethyl-s-triazine-2-yl) group; Y represents a divalent group; and the benzene rings may further contain substituents; a novel photopolymerizable composition containing the same and a light- and heat-sensitive recording material containing the same.

Abstract: A color proof making apparatus for making a color proof for forming a color image having a dye image by exposing an ultraviolet light-sensitive material to ultraviolet light through an image original, and by heating the exposed material. The apparatus includes a plurality of filters disposed in correspondence with different light-sensitive wavelength regions of the light-sensitive material and respectively adapted to transmit therethrough only the ultraviolet light of corresponding wavelength regions for exposing the light-sensitive material sensitive to the light-sensitive wavelength regions; a selecting device for selecting one of the filters which corresponds to each image original; and a driving unit for inserting the filter selected by the selecting device into an optical path leading to the image original. Accordingly, the filter is inserted accurately into the optical path, and it is possible to make a color proof with excellent color separation and high definition with a simple process.

Abstract: A novel light-sensitive bistrihalomethyl-s-triazine compound is provided, which is represented by the general formula (I): ##STR1## wherein T represents a (4,6-bistrihalomethyl-S-triazine-2-yl) group; Y represents a divalent group; and the benzene rings may further contain substituents; a novel photopolymerizable composition containing the same and a light- and heat-sensitive recording material containing the same.

Abstract: A light- and heat-sensitive recording material comprising a support having thereon at least one light- and heat-sensitive layer comprising, (1) microcapsules containing an electron donative colorless dye, and (2) a light-hardenable composition containing (a) a polymerizable vinyl monomer, (b) a photopolymerization initiator, and (c) an electron acceptive developer and a light- and heat-sensitive recording material comprising a support having thereon at least one light- and heat-sensitive layer comprising, (1) microcapsules containing an electron donative colorless dye, and (2) a light-hardenable composition containing (d) an electron acceptive polymerizable vinyl monomer and (b) a photopolymerization initiator.

Abstract: A photosensitive composition comprising a trihalomethyl-s-triazine compound and a photosensitizer, wherein the photosensitizer being a dye having a reduction potential not more than 0.10 volt higher than the reduction potential of the trihalomethyl-s-triazine compound, and a photopolymerizable composition employing the photosensitive composition.