Abstract: A resist underlayer film composition is excellent in resistance to a basic hydrogen peroxide aqueous solution in gap-filling and planarization characteristics having a dry etching characteristic; a patterning process and method for forming a resist underlayer film, wherein the resist underlayer film composition is used for a multilayer resist method, the composition comprising: (a1) one, or two or more, of a compound represented by following general formula (x); and (b) an organic solvent, wherein n01 represents an integer of 1 to 10; when n01 is 2, w represents a sulfinyl group, a sulfonyl group, an ether group, or a divalent organic group having 2 to 50 carbon atoms; when n01 is an integer other than 2, w represents an n01-valent organic group having 2 to 50 carbon atoms; and y represents a single bond or divalent connecting group having 1 to 10 carbon atoms and optionally having an oxygen atom.

Abstract: As a display device has a higher definition, the number of pixels, gate lines, and signal lines are increased. When the number of the gate lines and the signal lines are increased, there occurs a problem that it is difficult to mount an IC chip including a driver circuit for driving the gate and signal lines by bonding or the like, whereby manufacturing cost is increased. A pixel portion and a driver circuit for driving the pixel portion are provided over the same substrate, and at least part of the driver circuit includes a thin film transistor using an oxide semiconductor interposed between gate electrodes provided above and below the oxide semiconductor. Therefore, when the pixel portion and the driver circuit are provided over the same substrate, manufacturing cost can be reduced.

Abstract: A negative working photosensitive lithographic printing plate is disclosed, which comprises a support having thereon at least one photosensitive layer containing a polymeric binder having repeating units represented by formula (I): wherein R1 represents a hydrogen atom or a methyl group; R2 represents a hydrocarbon group which has an alicyclic structure and has 3 to 30 carbon atoms and a valence of n+1; A represents an oxygen atom or —NR3—, wherein R3 represents a hydrogen atom or a monovalent hydrocarbon group having 1 to 10 carbon atoms; and n is an integer of 1 to 5. The negative working photosensitive lithographic printing plate can attain both high productivity and high printing durability. It is especially suitable for drawing with laser light.

Abstract: Methods for forming images are disclosed. The images are formed by imaging and developing an imageable element comprising a layer of an imageable composition over a substrate. The imageable composition contains a polymeric binder, an acid activatable crosslinking agent, and an acid generator of the structure: in which: Y is hydrogen, halo, alkyl, diphenylamino, phenylthio, or (CH2)kSO3? in which k is 1 to 4; R1, R2, R3, and R4, are each independently hydrogen or SO3? with the proviso that the anion has two to four SO3? groups; Z1 and Z2 are each independently a benzo group or a naphtho group; Z3 is two hydrogen atoms, a cyclohexene residue or a cyclopentene residue; X1 and X2 are each independently S, O, NH, CH2, or CMe2; Q? is an onium cation; n is 1 to 4; and m is 1 to 3, with the proviso that m is 1 when the anion has two SO3? groups; m is 2 when the anion has three SO3? groups; and m is 3 when the anion has four SO3? groups.

Abstract: A material for making an electroconductive pattern, the material comprising a support and a light-exposure differentiable element, characterized in that the light-exposure differentiable element comprises a conductivity enhanced outermost layer containing a polyanion and a polymer or copolymer of a substituted or unsubstituted thiophene, and optionally a second layer contiguous with the outermost layer; and wherein the outermost layer and/or the optional second layer contains a monodiazonium salt capable upon exposure of reducing the conductivity of the exposed parts of the outermost layer relative to the unexposed parts of the outermost layer and a method of making an electroconductive pattern.

Abstract: The present invention includes an imageable element, which can be: (a) an imageable element comprising an imaging layer which comprises: an aromatic diazonium salt containing compound having an alkoxy substituent and an aromatic diazonium salt containing compound free of an alkoxy substituent; a polyvinyl acetal binder; and a sheet substrate; or (b) an imageable element comprising an imaging layer which comprises: an aromatic diazonium salt containing compound having an alkoxy substituent and an aromatic diazonium salt containing compound free of an alkoxy substituent; and a sheet substrate. The imaging layer includes a total aromatic diazonium salt containing compound content of at least 10 weight percent. The molar ratio of the aromatic diazonium salt containing compound having an alkoxy substituent to the aromatic diazonium salt containing compound that is free of an alkoxy substituent is from about 1.0:1 to 70:1.

Abstract: A positive resist composition comprising: (A) a compound which generates an acid upon irradiation with active light or radiant ray, and (B) a resin which exhibits increased solubility in an alkali by action of an acid and includes a copolymer including (b-1) 40% to 85% by mole of a unit having an alkali-soluble group, (b-2) 3% to 25% by mole of a unit having (i) an acid-decomposable dissolution-inhibiting group and (ii) a group which accelerates dry-etching resistance, and (b-3) 3% to 40% by mole of a unit having an acid-decomposable dissolution-inhibiting group and being other than the units (b-1) and (b-2). This composition is a chemically amplified positive resist composition that can be applied to a resist having a reduced thickness, is excellent in dry-etching resistance and definition and can form a patterned resist with a good sectional shape.

Abstract: A lithographic printing plate precursor comprising a support having a hydrophilic surface having provided thereon an image-forming layer containing a hydrophobic high molecular compound having at least either a functional group represented by formula (1) or a functional group represented by formula (2): 1

Abstract: There is described a method of preparing a lithographic plate which comprises coating on a lithographic support having a hydrophilic surface, a layer of a heat sensitive coating, digitally imaging the coating, then processing the plate with water to remove the unexposed areas of the coating to reveal the hydrophilic surface of the plate and to leave an ink receptive image, wherein the heat sensitive coating comprises a diazo salt of formula (I): wherein R1 is an anion, R2 and R3 represent optional substitution, R4 is —N— or —S— and R5 is a group which, after exposure of the plate, renders the residue of the diazo salt oleophilic and fount solution insoluble.

Abstract: The present invention relates to a recording material having a substrate and a negative-working, radiation-sensitive layer which contains a diazonium salt, metal-free colored pigments dispersed in an organic polymeric binder, transparent spacer pigments having a pore volume of more than 1.0 ml/g and a polymeric binder. The predispersal of the colored pigments is achieved by milling with an organic polymeric binder containing hydroxyl groups, some or all of which have been reacted with a di- or polycarboxylic anhydride so that the binder has an acid number of from 20 to 200. Printing plates in which the printing parts have a clearly visible contrast relative to the substrate can be produced from the recording material.

Abstract: Disclosed is a heat-sensitive recording material comprising a support comprised of a substrate and a thermoplastic resin layer formed thereon, and a heat-sensitive recording layer disposed on the support and containing a diazonium salt compound capable of being decomposed by ultraviolet light, wherein the thermoplastic resin layer is formed by melt extrusion and wherein the thermoplastic resin layer contains a fluorescent brightening agent and a white pigment. In the heat-sensitive recording material, the fluorescent brightening agent is preferably a compound represented by the following structural formula (I):Structural Formula (I) ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 each represent a hydrogen atom, or a substituent group or a substituent atom.

Abstract: Disclosed is an image forming material comprising a metal support having an anodization layer on its surface, and provided on the anodization layer, a light sensitive layer containing a first compound capable of generating an acid on exposure of an actinic light, a second compound having a group cross-linking by an acid or a third compound having a chemical bond capable of being decomposed by an acid, and an infrared absorber, wherein the thickness of the anodization layer is 10 to 60 mg/dm.sup.2.

Abstract: Improved aluminum substrates suitable for use in the production of lithographic printing plates. A surfactant surface treatment for such aluminum substrates improves the quality of radiation sensitive coatings subsequently applied to the substrate. The surfactant may be in a layer comprising a mixture of a hydrophilizing composition and a surfactant on the aluminum alloy surface; or a hydrophilizing layer comprising a hydrophilizing composition may be on the aluminum alloy surface and a surfactant layer comprising a surfactant on the hydrophilizing layer.

Abstract: A radiation sensitive composition containing an adduct of a diazonium resin having pendant diazonium groups, with a sulfonated acrylic copolymer having pendant sulfonate groups. The sulfonated acrylic copolymer contains an acrylic moiety and a sulfonated styryl or acrylic moiety. The copolymer may optionally contain styryl moieties. The composition is useful as a radiation sensitive layer in imaging elements for graphic arts applications and is particularly useful in preparing durable, long-wear, printing plates.

Abstract: According to the present invention there is provided a method for making a lithographic printing plate comprising the steps of:(1) image-wise exposing an imaging element having on a plastic film support in the order given (i) a uniform ink-repellant layer comprising a cross-linked hydrophilic binder and (ii) a photosensitive layer comprising a diazonium salt or a diazo resin;(2) and developing a thus obtained image-wise exposed imaging element by mounting it on a print cylinder of a printing press and supplying an aqueous dampening liquid and/or ink to said photosensitive layer.

Abstract: According to the present invention there is provided a method for making a lithographic printing plate comprising the steps of:(1) image-wise exposing an imaging element having of a flexible film support in the order given (i) a uniform ink-repellant layer comprising a cross-linked hydrophilic binder and (ii) a photosensitive layer comprising a diazonium salt or a diazo resin;(2) and developing a thus obtained image-wise exposed imaging element by mounting it on a print cylinder of a printing press and wiping it with a disposable absorbing tissue moistened with water or fountain solution.

Abstract: Proposed is a novel undercoating composition used in the photolithographic patterning of a photoresist layer by intervening between the substrate surface and the photoresist layer to decrease the adverse influences of the reflecting light from the substrate surface. The undercoating composition of the invention comprises (a) a melamine compound substituted by methylol groups and/or alkoxymethyl groups and (b) a polyhydroxy benzophenone compound, diphenyl sulfone compound or diphenyl sulfoxide compound, optionally, with admixture of (c) an alkali-insoluble resin of a (meth)acrylic acid ester.

Abstract: The present invention provides an imaging element comprising on a hydrophilic base a light-sensitive layer containing polyvinyl alcohol hydrolyzed to at least an extent of 95% by weight, a cationic surfactant and a diazo resin and/or a diazonium salt characterized in that the light-sensitive layer comprises metal-free phthalocyanine.The present invention also provides a method for obtaining an imaging element as defined in any of the claims 1 to 6 bypreparing a dispersion of metal-free phthalocyanine in water in the presence of a cationic surfactant in an amount ranging from 0.24 g/l to 24 g/l;preparing a light-sensitive composition by mixing said dispersion, polyvinyl alcohol hydrolyzed to at least an extent of 95% by weight and a diazo resin and/or a diazonium salt andcoating said light-sensitive composition on a hydrophilic base, characterized in that said dispersion comprises polyvinyl alcohol hydrolyzed to at least an extent of 95% by weight in an amount ranging from 4.0 g/l to 200 g/l.

Abstract: The invention relates to a method of increasing the sensitivity of laser induced thermal imaging by using certain sublimable compounds. The invention is useful in the field of thermal transfer imaging for the production of various graphic arts media.

Abstract: The present invention relates to supports for lithographic printing plates and to a process for producing the same. In particular, the invention relates to aluminum plates having an electrochemically grained and anodized surface which is has a smooth, shiny surface and hence greater image contrast when a lithographic image is formed thereon. The surface has a substantially uniform surface topography comprising peaks and valleys and surface roughness parameters wherein Ra ranges from about 0.10 to about 0.50 microns, Rz ranges from about 0.00 to about 5.00 microns, Rt ranges from about 0.00 to about 6.00 microns and Rp ranges from about 0.00 to about 4.00 microns. The surface preferably has tristimulus color coordinate values wherein L ranges from about 35.00 to about 75.00, a ranges from about -4.00 to about +4.00 and b ranges from about -4.00 to about +4.00.

Abstract: The invention relates to a method of increasing the sensitivity of laser induced thermal imaging by using certain diazo compounds. The diazo compounds contain functional groups adjacent the diazo substituent capable of stabilizing these compounds. The invention is useful in the field of thermal transfer imaging for the production of various graphic arts media.

Abstract: A negative-type photosensitive lithographic printing plate having a photosensitive layer comprising upper and lower layers, each layer containing a photosensitive diazo resin, on a support having a hydrophilic surface. The concentration of the diazo resin in the upper layer is not more than 1/3 of the concentration of the diazo resin in the lower layer, the thickness of the upper layer is not less than three times the thickness of the lower layer, and the upper layer contains an oleophilic non-photosensitive resin with a weight average molecular weight ranging from 10,000 to 150,000. The lithographic printing plate has a very short exposure time, may be used with projection exposure systems and allows for the use of known developers and automated developer systems.

Abstract: A multi-color heat-sensitive recording material is disclosed which comprises a support having laminated thereon in the following order a first heat-sensitive color forming layer comprising mainly an electron donating dye precursor and an electron accepting compound, a second heat-sensitive color forming layer containing a diazonium salt compound having a maximum absorption wavelength of 360.+-.20 nm and a coupler capable of reacting with the diazonium salt compound by heating to form color and a third heat-sensitive color forming layer containing a diazonium salt compound represented by formula (I) having a maximum absorption wavelength of 400.+-.20 nm and a coupler represented by formula (II) capable of reacting with the diazonium salt compound by heating to form color: ##STR1## wherein R.sub.1 and R.sub.2 each represents an alkyl group, an aralkyl group or an aryl group; Y represents a halogen atom, an acyl group, an alkoxycarbonyl group or a sulfamoyl group; and X.sub.1.sup.

Abstract: A photosensitive layered sheet for producing transferrable decorative foil designs comprising a solvent resistant, hydrophobic plastic film having superimposed thereon the following sequential layers of coatings:(a) a clear or colored water insoluble lacquer;(b) a clear water soluble polymer;(c) an organic solvent containing from 2-8% by weight of aluminum platelets having their largest dimension not greater than about 5000 microns and a thickness not greater than 1000 angstroms;(d) an ink extender;(e) an ink coat powder, and(f) a pre-sensitized photographic emulsion.A method of making these photosensitive layered sheets.

Abstract: A tonable, aqueous-processable, photosensitive element and process for forming a colored image from said element is described. The element comprises a support and a tonable, aqueous-processable photosensitive layer, said photosensitive layer consisting essentially of (a) an aqueous-processable, photoinsolubilizable photosensitive composition comprising a photosensitive material, and (b) a water-soluble plasticizer, wherein said photosensitive material is present in sufficient amount to insolubilize said photosensitive layer on exposure to actinic radiation, said photosensitive composition is present in sufficient amount to form a layer when said photosensitive layer is coated, and said plasticizer is present in sufficient amount to make said photosensitive layer.

Abstract: The present invention relates to a method of forming a pattern using a photosensitive film having bleaching properties for use as a contrast enhancing layer. The photosensitive film comprises an aromatic diazonium salt having extremely high purity content. In addition, no harmful metals are incorporated during preparation. Fine patterns of various semiconductor devices can thus be formed with high accuracy. The diazonium salt is selected from the group consisting of trifluromethanesulfonic acid salt, methanesulfonic acid salts, and trifluromethaneacetic salts of aromatic diazonium compounds.

Abstract: Disclosed is a pattern forming contrast enhanced material comprising (a) a water soluble photosensitive compound selected from the group consisting of a water soluble aliphatic photosensitive compound (excluding ring compounds) having one or more of the group expressed by the formula (I), an aliphatic photosensitive quaternary ammonium salt having one or more of the group expressed by the formula (I), an aromatic photosensitive quaternary ammonium salt having one or more of the group expressed by the formula (I), and a photosensitive pyridinium salt having one or more of the group expressed by the formula (I), (b) a water soluble resin and (c) water and a pattern forming method using the same. ##STR1## According to the present invention, this material is used as a contrast enhanced layer in the exposure effected by deep ultraviolet ray such as an excimer laser beam to form a good fine pattern of a submicron order.

Abstract: Metallic appearing images may be produced with a color proofing sheet which comprises a temporary carrier layer, a metallic appearance pigment-filled layer, a color pigment filled layer, a photoresist layer, and an optional adhesive layer. There may be a barrier layer between the optional adhesive and the resist layer and a release layer coating may be on the temporary carrier layer.

Abstract: Disclosed is a light-sensitive litho printing plate comprising:a support, a light-sensitive layer and a silicone rubber layer provided thereon,wherein said light-sensitive layer contains a substance,whereby said substance forms a color during developing or after developing.

Abstract: A pattern forming method, comprising the steps of providing a resist film on a substrate; providing a photosensitive film containing a photosensitive diazonium salt on the resist film; and then subjecting the resultant composite to pattern exposure by use of a light to which both of the resist film and the photosensitive diazonium salt are sensitive, can employ a composition for pattern formation which comprises a photosensitive diazonium salt, a resin binder and a solvent. By this method, a minute pattern of 1 .mu.m or less can be formed, utilizing effectively the UV-ray exposure technique of the prior art, with good dimensional precision and stability.

Abstract: This invention relates to a method for forming a colored image on a degradable sheet material. As a result, a negative- or positive-working color proofing sheet can be produced on a variety of printing paper stocks. Upon exposure to an actinic radiation source through a screened image and development, it can accurately reproduce the image on the degradable sheet. The construction is useful as a color proof which can be employed to accurately predict the image quality from a lithographic printing process on a variety of printing surfaces.

Abstract: Disclosed is a food or beverage container or container panel comprised of an aluminum alloy body having an integral bottom and wall. An intermediate layer comprised of an aluminum oxide or aluminum hydroxide layer is bonded to the aluminum alloy body and a functionalized layer of an organo phosphonate, organo phosphinate or phosphate ester is bonded to the oxide or hydroxide layer. A polymer layer is bonded to the functionalized layer. The functionalized layer is comprised of the reaction product of phosphonic or phosphinic acid and/or phosphonic acid ester, for example.

Abstract: The present invention relates to an aluminum support for a lithographic plate, whose surface is electrochemically roughened and has the following conditions:a) an arithmetic mean of the pit diameters of the electrolytically etched support is 4 .mu.m or less,b) a difference between an arithmetic mean (D.sub.L) of the maximum pit diameter of the support in the rolling direction and an arithmetic mean (D.sub.LT) of the maximum pit diameter of the support in the direction perpendicular to the rolling direction is larger than 10% of the maximum pit diameter (a larger one of D.sub.L and D.sub.LT),c) the number of pits detected with a surface roughness tester having a profilometer using a stylus having a tip radius of 1 .mu.m is at last 200/mm, andd) an average centerline roughness is 0.2 .mu.m to 1.0 .mu.m.According to the present invention, a lithographic plate having the aluminum support is excellent in both of a printing durability and a stain proofness.

Abstract: A photosensitive composition is described, comprising a diazonium compound and a polyurethane resin having a carboxyl group in its main chain. The composition can be developed with an aqueous alkali developer to provide a lithographic printing plate having a long press life.

Abstract: The matting agent particles of matted photographic imaging materials contain a finely divided solid as well as a dye that is only present at the image-forming points after exposure and development of the material. The starry night effect is thereby avoided. The dye can be formed during exposure and development from a precursor, e.g., from silver halide or from couplers for color photography or for diazo processes.

Abstract: A light-sensitive composition comprises a diazo resin, a polymeric binder, and at least one compound having at least one structural unit selected from the group consisting of ureido bond, thioureido bond, urethane bond and thiourethane bond. The light-sensitive composition can suitably be used for preparing a presensitized plate for use in making lithographic printing plates and is excellent in developability with an aqueous alkaline developer.

Abstract: Presensitized sheets for color proofing comprising a removable carrier sheet bearing a photosensitive medium sensitive to radiation within the wavelength band 325 to 700 nm and comprising photohardenable, photoadherent, photoinsolubilisable or photosolubilisable material, the sheet including a removable antihalation layer which is removed either when stripping the carrier sheet or during subsequent processing. The antihalation dyes may be positioned within a transparent carrier sheet, in a layer on the carrier sheet opposite to the photosensitive medium or in a layer positioned between the carrier sheet and light-sensitive medium.

Abstract: Light-sensitive compositions comprise a light-sensitive diazo resin, a binder and a compound having a pivaloyl group. Lithographic printing plates prepared by using the light-sensitive compositions of the invention are excellent in ink receptivity.

Abstract: Photopolymeric printing plates wherein an electrochemically etched, anodized and silicated aluminum plate has a plurality of coatings applied thereon and wherein at least one of the coatings include a solvent soluble diazo therein.

Abstract: Particulate organic polymeric beads in the thermal adhesive layer of prepress color proofing elements prevents adhesive blocking without optical interference or reduction in adhesive performance.

Abstract: In a process for producing a support for a lithographic printing plate, at least one surface of an aluminum sheet is subjected to roughening treatment and subsequently to anodic oxidation treatment at a current density of at least 1 A/dm.sup.2 in an electrolytic solution containing 0.1 to 5% by weight of an alkaline electrolyte. Even if scratches are formed on non-image areas of a printing plate prepared from the support according to the invention, such scratches cause less stains on a printed matter.

Abstract: Disclosed is a two-color heat-sensitive recording material which comprises a base sheet and a recording layer of single-layer or multi-layer structure formed on the base sheet, the recording layer comrising:(a) a diazonium salt,(b) a basic leuco dye,(c) a 2-hydroxy-3-naphthoic acid derivative which acts as a coupler compound for causing the diazonium salt to develop color when heated and which also acts as a color developing material for causing the basic leuco dye to develop color when heated, and(d) a basic substance, wherein the diazonium salt and the basic leuco dye each form a color upon application of heat, thereby giving the first image of a mixed color, and, then, after irradiation of an active ray to decompose the diazonium salt, the basic leuco dye alone forms its own color upon application of heat, thereby giving the second image whose color is different from the mixed color of the first image.

Abstract: Disclosed is a drafting material comprising a transparent base material with a hydrophilic coating which readily accepts ink, ensures rapid drying of the ink and can be marked in a wipe-resistant manner. The hydrophilic coating of the drafting material includes sulfonate group-containing copolyesters which are preferably present in an amount of 30 to 70 percent by weight. The drafting material can be marked with felt-tip pens containing aqueous inks.

Abstract: A metal base lithographic printing plate cleaned and treated by RF plasma to render the non-exposed area hydrophilic, then coated with either a negative working or positive working photosensitive coating. The method is characterized by its elimination of the conventional alkaline etch with attendant hazard, pollution and toxicity problems.

Abstract: A translucent antibacterial soap is made by a process which includes dissolving a normally solid antibacterial material which is resistant to heat and alkali, e.g., 2,4,4'-trichloro-2'-hydroxy diphenyl ether (THDE), in a mixture of components for making such translucent antibacterial soap, which components include soaps of higher fatty acids in liquid form, such as with water in kettle soap, and converting said mixture to transparent soap cakes, preferably by a process which includes partially drying the mixture, working it and extruding it to a bar form, which bar may be cut to length and pressed into the final desired translucent antibacterial soap cakes.Preferably, the antibacterial compound, in powder form, is dissolved in a superfatting agent, such as mixed tallow fatty acids and coconut oil fatty acids and/or lanolin fatty acids, and then admixed at elevated temperature with the soaps of higher fatty acids that are a major constituent of the soap cakes to be made.

Abstract: A process for preparing a lithographic support, and the printing plate made therefrom, are described, wherein the process comprises the steps of (a) liquid-honing a surface of an aluminum sheet, and (b) electrochemically graining the surface of the aluminum sheet in an electrolyte comprises hydrochloric acid, nitric acid, or a mixture thereof.

Abstract: A method of forming an image on a substrate is described which comprises blending a desired coloring pigment, adding the coloring pigment to a water soluble photoresist, coating the substrate with the pigmented photoresist, exposing the photoresist to actinic radiation to harden the parts of the photoresist occupying the desired image area, and removing with a water based solvent the unexposed photoresist.

Abstract: A coated lithographic printing plate comprises a grained, anodized aluminum substrate and coating thereon comprising a diazo resin in admixture with particulate energy absorbing material that will absorb incident radiation and re-radiate it as radiation that will change the diazo resin coating which is imageable with a Crosfield Datrax 760 YAG laser plate maker producing incident radiation of 1/06 microns. The topography of the substrate and the particulate material in the coating trap and convert a substantial portion of the incident laser radiation which passes through the coating without substantially affecting same into radiation that will change the coating.

Abstract: A radiation-sensitive, imageable article comprises in sequence a substrate, a vapor-deposited colorant layer capable of providing a reflection optical density of at least 0.6 to a 10 nm band of the electromagnetic spectrum between 280 and 900 nm, a vapor-deposited metal or metalloid layer of uniform composition, and a photosensitive resist layer which is non-integral with said colorant layer, the ratio of the thickness of said colorant layer to said metal or metalloid layer being at least 7:1.

Abstract: A silver halide color photographic material in disclosed which comprises a support having thereon at least one silver halide emulsion layer, wherein the photographic material contains at least one compound represented by general formula (I) and at least one compound represented by general formula (II) in combination:Cp--(TIME).sub.n --X--Dye (I)wherein Cp represents a coupler residue capable of releasing --(TIME).sub.n --X--Dye upon coupling with an oxidation product of an aromatic primary amine developing agent; TIME represents a timing group; n represents 0 or a positive integer; Dye represents a dye residue, and X represents an auxochromic group of said dye; ##STR1## wherein R represents a hydrogen atom or a substituent; Y represents a hydrogen atom or a coupling-off group; Za, Zb and Zc each represents a methine group, a substituted methine group, .dbd.