Abstract: There is provided a heat sensitive recording sheet comprising a support and a heat sensitive color forming layer excellent in mechanical adaptability and recording characteristics and capable of providing clear copies. This recording sheet has a smoothness of at least 150 seconds measured according to JIS P8119, an opaqueness of 30-50% according to JIS P8138 and a stiffness in longitudinal direction of 35 or less in Clark value according to JIS P8143 and the support is a synthetic paper.

Abstract: Disclosed is a photographic material which comprises a synthetic plastic film, a polyolefin layer provided on one surface of the plastic film, an image forming layer provided on said polyolefin layer and layer (A) which contains at least one of carboxy-modified polyethylene, ethylene-ethyl acrylate copolymer, ethylene-vinyl acetate copolymer and polyolefin and which is provided on another surface of the synthetic plastic film opposite to the image forming layer side, the surface of said polyolefin layer which contacts with the image forming layer being a roughened surface and the surface of the layer (A) being a mirror-like surface.

Abstract: An ink jet recording medium having at least one ink receptive layer containing synthetic silica of fine particle form as a main pigment, having a recording surface dried by pressing said recording surface against a heated mirror surface, and having ink receptive layer having an absorption capacity of at least 10 g/m.sup.2 is disclosed.That is, the present invention provides an ink jet recording medium which has a gloss without requiring any post-treatment for imparting the gloss, has a high ink absorbability and gives a high color reproducibility and a high color density in printing with a water-base ink, particularly a recording medium for full color ink jet recording having a gloss.

Abstract: Disclosed is a light sensitive material for lithographic printing plate which comprises a support and at least a silver halide emulsion layer and a surface physical development nuclei layer provided on said support wherein said silver halide emulsion layer contains at least one of the sensitizing dyes represented by the following general formulas (I), (II), (III), (IV) and (V):General formula (I) ##STR1## General formula (II) ##STR2## General formula (III) ##STR3## General formula (IV) ##STR4##

Abstract: A heat-sensitive recording material containing a special sensitizer in a heat-sensitive recording layer is excellent in thermal response and sensitivity.

Abstract: Reversible image-forming materials on which images are formed by a thermal head and conversely the formed images are erasable by water or moisture are obtained by providing, on one surface of a support, a recording layer comprising a specific fluorane type color former, a color developer and a binder and further providing an overcoat layer on the recording layer. By providing further a sticking prevention layer on the overcoat layer, sticking can be prevented and high speed printing is enabled.

Abstract: A heat-transfer recording sheet comprising a support and, coated thereon, a heat-meltable ink layer acquires the ability of reproducing the gradation when said ink layer contains a saturated linear polyester or gallic acid.

Abstract: A higher fatty acid amide(s) is(are) additionally contained in the image receiving layer containing a saturated polyester of a sublimation type thermal transfer image receiving paper. This makes it possible to obtain a uniform printed image with improved color density.

Abstract: Thermal delayed tack sheet prepared by coating a base sheet with a thermal delayed tack composition containing an adhesive polymer, a solid plasticizer, and preferably a tackifier, which plasticizers are fine particle solid compound(s) at room temperature.

Abstract: Disclosed is a lithographic printing plate material which comprises a support and at least an undercoat layer, a silver halide emulsion layer and a catalytic layer containing physical development nuclei provided in this order on said support and which utilizes silver complex diffusion transfer process, wherein content of calcium ion in at least one of lime treated gelatin-containing layers is 1000 ppm or less.

Abstract: There is disclosed a thermosensitive recording material improved in thermal response and image retention which comprises a support and, provided thereon, a thermosensitive recording layer containing a generally colorless or slightly colored dye precursor and a developer which, upon being heated, reacts with said dye precursor to develop color, wherein said thermosensitive recording layer contains as sensitizer a compound selected from a group consisting of p-benzylbiphenyl, diaryl esters of adipic acid, ##STR1## (wherein R represents a substituted or unsubsitituted aralkyl group), ##STR2## (wherein R.sub.1 and R.sub.2 each represents an alkyl, aralkyl, or aryl group), and ##STR3## and said developer is bis(3-allyl-4-hydroxyphenyl)sulfone.

Abstract: Disclosed is a colorless dye for use in recording materials comprising a compound represented by the general formula: ##STR1## Said recording materials are of the types which utilize a color developing reaction between an electron-donating colorless dye and an electron-accepting color developer, such as, carbonless pressure-sensitive recording materials, thermosensitive recording materials, etc.

Abstract: There are disclosed photographic materials which comprise a synthetic plastic film such as a polyester film having on one surface a resin layer comprising a resin composition containing at least 50 parts by weight (based on the total weight of the resin layer) of a polyolefin which has undergone at least one kneading or a resin layer comprising a resin composition containing 50 to 95 parts by weight (based on the total weight of the resin layer) of said polyolefin and 5 to 50 parts by weight (based on the total weight of the resin layer) of a high-density polyethylene.Further disclosed is a photographic material which comprises a synthetic plastic film having on one surface a layer of the above composition and on another surface a resin layer which contains at least one of carboxy-modified polyolefin, ethylene-ethyl acrylate copolymer, ethylene-vinyl acetate copolymer and polyolefin.

Abstract: Disclosed is an additive for lithographic printing ink improved in flow, drying and interfacial properties. This additive contains a compound having an alkylene oxide unit and of a HLB value of 3 to 13. Further improvement can be attained by the use of additive which contains a combination of at least one compound having an alkylene oxide unit and a hydrocarbon radical of 1 to 8 carbon atoms and at least one compound having an alkylene oxide unit and a hydrocarbon radical of 9 or more carbon atoms, the average HLB value of said combination being 3 to 13.

Abstract: A stable emulsion of microcapsules is obtained by polymerizing at least one water-soluble vinyl monomer in an aqueous solution of an oil-soluble vinyl monomer-maleic anhydride-maleic ester multipolymer to prepare a water-soluble resin, dispersing or emulsifying discrete fine particles of a hydrophobic material in an acidic aqueous solution of the water-soluble resin, adding an amino resin precursor separately prepared to the dispersion or emulsion, and heating the mixture.

Abstract: Disclosed is silver halide cubic crystal having a depression on each face thereof and/or a hollow portion formed by joining of the depression with other depressions. This crystal may be produced by precipitating first monodisperse cubic type silver halide crystals and then precipitating second silver halide having a lower solubility than the first silver halide crystals by controlled doublejet precipitation method to dissolve the first silver halide crystals. There are also disclosed a silver halide photographic emulsion comprising such silver halide crystal and a silver halide photographic high-sensitive material containing said silver halide to which a spectral sensitizing dye is adsorbed.

Abstract: A thermal transfer recording material comprising a thin substrate and a thermal transfer ink layer provided on the upper side of the substrate, wherein the thin substrate is a polyethylene film having a density of 0.935 or higher, causes no sticking phenomenon in thermal transfer recording.The above thermal transfer recording material, when the polyethylene film used therein further has a weight average molecular weight of 200,000 or higher, forms no frost image and causes no sticking of the polyethylene to the surface of a thermal head of a printer.

Abstract: Heat-sensitive recording materials comprising a colorless or light-colored dye precursor and a color developer capable of developing a color of the dye precursor, upon reaction with said dye precursor with heating, further contain as sensitizers specific styryl-containing compounds. By incorporating these specific sensitizers, the heat-sensitive recording materials provide excellent thermal response and high sensitivity.

Abstract: An electrophotographic photoreceptor excellent in properties after repeated use and durability is provided by containing a bis-azo pigment represented by the following general formula [I] or [II] in the light-sensitive layer on the conductive support: ##STR1## wherein X represents --O--, --S--or >N--R.sub.4 wherein R.sub.4 represents a hydrogen atom, an alkyl group or an aralkyl group, R.sub.1, R.sub.2 and R.sub.3 each represent a hydrogen atom, an alkyl group, an alkoxy group, an aryl group or a group of atoms necessary to form a condensed ring by combination of two or them, Y.sub.1 and Y.sub.2 each represent a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group, A represents a coupler residue necessary to produce an azo pigment and n is 0 or 1; ##STR2## wherein Y.sub.1 and Y.sub.2 each represent a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group, R.sub.1 and R.sub.

Abstract: Disclosed are novel antifoggant precursors having the general formula (I) or (II) which are sufficiently stable in a wealkyl acidic medium, are markedly effective in restraining over-development fog and besides cause little loss of sensitivity: ##STR1## (wherein Y represents oxygen atom or ##STR2## X represents OR.sub.3 when Y is oxygen atom and R.sub.3 when Y is ##STR3## where R.sub.1 and R.sub.2 each represents hydrogen atom, alkyl group aryl group and R.sub.3 represents hydrogen atom, alkyl group or phenyl group; R.sub.4 -R.sub.6 each represent hydrogen atom, halogen atom, alkyl group, carboxyl group, alkoxycarbonyl group or phenyl group, R.sub.4 and R.sub.5 may form together a benzene ring; R.sub.7 represents hydrogen atom, alkyl group or phenyl group; and A represents a heterocyclic group of the mercapto antifoggant.) ##STR4## (wherein X, Y, R.sub.4 -R.sub.5 and A are the same as defined for the general formula (I) and R.sub.4 and R.sub.5 or R.sub.5 and R.sub.6 may form together a benzene ring.).