Abstract: A heat mode corresponding negative-type image recording material by which ablation in laser scanning when recording is suppressed, the intensity of the formed image portion can be high and a planographic plate excellent in plate life can be formed is provided. It is characterized in that it contains (A) polyurethane resin insoluble in water and soluble in an aqueous alkaline solution or a polymeric compound which has on the side chain thereof a group represented by the general formula (39) or the general formula (40) as a polymeric compound insoluble in water and soluble in an aqueous alkaline solution, (B) a radical-polymerizable compound, (C) a light-to-heat converting agent and (D) a compound generating a radical by heat mode exposure of a light of wavelength which can be absorbed by (C) a light-to-heat converting agent and image recording can be carried out by the heat mode exposure.

Abstract: A lithographic printing plate precursor comprises an image forming layer containing at least one polymer compound having a fluoroaliphatic group on the side chain, wherein the fluoroaliphatic group is derived from a fluoroaliphatic compound produced by a telomerization or oligomerization method.

Abstract: A negative image-recording material which can be imagewise exposed to IR radiation from IR lasers and ensures direct image formation from digital data of a computer or the like. The material, when used in a lithographic printing plate, ensures good hardenability in an image area and exhibits good printing durability, even if not heated for image formation, and ensures a large number of good prints from the printing plate. The recording material contains (A) an IR absorber, (B) a radical generator having an onium salt structure, (C) a radical-polymerizing compound, and (D) a reducing additive, and this is imagewise exposed to IR radiation for image formation. Preferably, the reducing additive (D) is highly reactive with radicals and a reaction product with a radical has high reductivity. Preferred examples of the reducing additive are ether-type hydrogen donors, alcohol-type hydrogen donors, vinyl ethers and phosphine-type compounds.

Abstract: A planographic printing plate precursor obtained by laminating on a substrate, a layer composed of a hydrophobic polymer which can be made hydrophilic by heating, and a layer of which exposed portions can be removed by heat mode exposure.

Abstract: A negative image-recording material which can be imagewise-exposed by IR radiation from IR lasers and enables direct image formation from digital data of a computer or the like. The material, when used in a lithographic printing plate, ensures good hardenability in an image area, exhibits good printing durability, even if not heated for image-formation, and ensures a large number of good prints from the printing plate. The material includes (A) an IR absorber having an oxidation potential of at most 0.35 V (vs. SCE), (B) a thermal radical generator and (C) a radical-polymerizing compound. The material is imagewise-exposed to IR radiation for image formation. Preferably, the IR absorber (A) has, in a chromophoric group, an electron-donating substituent having a Hammett's &sgr;para value of at most −0.10, and the thermal radical generator (B) is an onium salt.

Abstract: A heat-sensitive composition comprising a compound of a specific general formula which generates an acid or radical when heated, and a compound whose physical and chemical properties are irreversibly changed by an acid or radical.

Abstract: An object of the present invention is to provide excellent in terms of durability wherein development with water, or direct production of the plate from digital data through infrared laser recording in particular such that a special process is not necessary, is possible, by forming on a support a photosensitive layer containing a reaction product of a compound having in a molecule thereof a functional group X and a functional group Y and a compound represented by a formula (1) stated below, or alternatively, containing a polymerization product of a compound having the functional group X and a compound represented by the formula (1) stated below. Further by incorporating water-insoluble particles in this photosensitive layer, many voids are formed in the photosensitive layer, further improving sensitivity and discrimination.

Abstract: Disclosed is a photopolymerizable composition which comprises (i) a sensitizing dye represented by the following formula (I-1), (ii) a titanocene compound, and (iii) an addition polymerizable compound having at least one ethylenically unsaturated double bond: wherein A and B each represents —S—, NR3, or NR4; R3 and R4 each represents a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group; Y1 and Y2 each represents a non-metallic atomic group to form a basic nucleus of a dye together with the adjacent A or B, and the adjacent carbon atoms; R1 and R2 each represents a monovalent non-metallic atomic group, or they may be bonded to each other to form an aliphatic or aromatic ring.

Abstract: A photosensitive composition for short wave exposure use, which comprises (i) a sensitizing dye as a 1,3-dihydro-1-oxo-2H-indene derivative having a specified structure, (ii) an activator compound that generates chemical changes by its interaction with an electronic excitation condition induced by light absorption of the sensitizing dye represented by formula (I) and thereby produces at least any one of radicals, acids and bases and (iii) a compound whose physical or chemical characteristics are changed and maintained by undergoing reaction with at least one of radicals, acids and bases.

Abstract: A method of making a lithographic printing plate by forming images at the surface of a lithographic printing plate precursor by means of a thermal head, with the lithographic printing plate precursor having on a support a recording layer comprising a polymer having at least either carboxylic acid or carboxylate groups capable of causing thermal decarboxylation; and a photopolymer composition for recording by exposure to infrared laser beams, wherein a thermally decarboxylation-causing polymer and a photothermal converter are comprised.

Abstract: A planographig printing plate precursor which can be written by heat mode exposure of low energy, has excellent strength in image portions and blemishing resistance, can be developed with water, or can be installed in a printing machine as it is for conducting printing without requiring specific treatment such as wet developing treatment, rubbing and the like after writing of an image, and a method for producing the same, are provided. The planographic printing plate precursor of the present invention is obtained by laminating on a substrate having a hydrophilic surface a layer composed of a hydrophobic polymer which is made hydrophilic by heating and either a layer composed of a hydrophilic polymer compound having in the side chain at least one of alkylene oxide groups or functional groups selected from --COOR, --COOM, --SOR, --SO.sub.2 R, --SO.sub.3 R, --SOM, --SO.sub.2 M, --SO.sub.3 M, --OH, --NR.sup.22 R.sup.23 (wherein, R represent a hydrogen atom, alkyl group or aryl group, M represents a metal atom, R.

Abstract: A photopolymerizable composition is disclosed, comprising at least A) a compound having an addition-polymerizable ethylenically unsaturated bond, B) a metallocene compound photopolymerization initiator and C) a polymer binder having an amido group on the side chain thereof and being substantially soluble in an alkali water.

Abstract: A photopolymerizable composition comprising i) an addition polymerizable compound having an ethylenically unsaturated double bond, ii) a sensitizing dye represented by the following formula (I) and iii) a titanocene compound: ##STR1## wherein A.sup.1 and A.sup.2 each represents a carbon atom or a hetero atom, Q.sup.1 represents a nonmetallic atom group necessary for forming a heterocyclic ring together with A.sup.1, A.sup.2 and the carbon atoms adjacent thereto, R.sup.1 and R.sup.2 each represents a hydrogen atom, an alkyl group or an aryl group and R.sup.1 and R.sup.2 may be combined with each other to form a ring, X.sup.1 and X.sup.2 each represents a cyano group or a substituted carbonyl group and X.sup.2 and X.sup.2 may be combined with each other to form a ring, and n represents 0, 1 or 2.

Abstract: A radiation-sensitive planographic printing plate which is excellent in terms of durability wherein development with water, or direct production of the plate from digital data through infrared laser recording in particular such that a special process is not necessary, is possible, by forming on a support a photosensitive layer containing a reaction product of a compound having in a molecule thereof a functional group X and a functional group Y and a compound represented by a formula (1) stated below, or alternatively, containing a polymerization product of a compound having the functional group X and a compound represented by the formula (1) stated below. Further by incorporating water-insoluble particles in this photosensitive layer, many voids are formed in the photosensitive layer, further improving sensitivity and discrimination.

Abstract: A photosensitive lithographic printing plate comprising a substrate having provided on the surface thereof a photosensitive layer through a layer which is formed by coating and drying a composition prepared by hydrolyzing and polycondensing a compound represented by formula (I) in a solvent having dissolved therein a phenol having a molecular weight of 1,000 or less or an organic phosphoric acid compound:A.sub.m M(R).sub.n (I)wherein M represents silicon, aluminum, titanium or zirconium, A represents a hydrogen atom, an alkyl group, an aryl group, an alkenyl group, a propargyl group, an alkoxy group, an epoxyalkyl group, a silyl group, a siloxy group or a functional group capable of addition reaction by a radical, m and n each represents 0 or a positive integer, provided that m+n=3 or 4, and R represents one of the groups (a) to (e) defined in the specification.

Abstract: A photopolymerizable composition is disclosed, comprising the following components (i), (ii) and (iii):(i) a compound having at least one addition-polymerizable, ethylenically unsaturated bond;(ii) a compound represented by formula (I): ##STR1## wherein A=represents a substituted or unsubstituted 2(3H)-thiazolylidene or 2-thiazolidinylidene group; --X-- represents --O--, --S--, --NR.sup.2 -- or --CONR.sup.3 --, in which R.sub.1, R.sup.2 and R.sup.3 each independently represents a hydrogen atom, an alkyl group, a substituted alkyl group, an aryl group, a substituted aryl group, an alkenyl group, a substituted alkenyl group, an alkynyl group or a substituted alkynyl group; and=E represents a substituted or unsubstituted 1,3-dihydro-1-oxo-2H-inden-2-ylidene group; and(iii) a compound which generates an active radical upon light irradiation in the co-presence of component (ii).

Abstract: A photopolymerizable composition is disclosed, comprising i) an addition polymerizable compound having an ethylenically unsaturated double bond, ii) a sensitizing dye represented by the following formula (I) and iii) a titanocene compound: ##STR1## wherein R.sup.1, R.sup.2, R.sup.7 and R.sup.8 each represents a hydrogen atom, an alkyl group, an aryl group or an alkenyl group, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 each represents a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an alkoxy group or an alkoxycarbonyl group, R.sup.1 and R.sup.2 may be combined with each other to form a ring together with the nitrogen atom or R.sup.1 and R.sup.5 or R.sup.2 and R.sup.3 may be combined with each other to form a ring together with the carbon atoms and the nitrogen atom, R.sup.3 and R.sup.4 or R.sup.5 and R.sup.6 may be combined with each other to form a ring together with the two carbon atoms, X.sup.1 represents an oxygen atom or a sulfur atom, and n represents 0, 1 or 2.

Abstract: A photopolymerizable composition is described, comprising components (i) a compound having at least one addition-polymerizable ethylenically unsaturated bond, (ii) a compound represented by the following formula (I): ##STR1## and (iii) an activating agent which generates an active radical upon light irradiation in the co-presence of component (ii). The substituents in formula (I) are defined in the specification.

Abstract: A photopolymerizable composition is disclosed, comprising (i) a compound having at least one addition-polymerizable, ethylenically unsaturated bond; (ii) a compound represented by formula (IA) or (IB): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.9, R.sup.10, R.sup.11 and R.sup.12 each independently represents a hydrogen atom, a halogen atom, an alkyl group, a substituted alkyl group, an aryl group, a substituted aryl group, a hydroxyl group, a substituted oxy group, a mercapto group, a substituted thio group, an amino group, a substituted amino group, a substituted carbonyl group, a sulfo group, a sulfonato group, a substituted sulfinyl group, a substituted sulfonyl group, a phosphono group, a substituted phosphono group, a phosphonato group, a substituted phosphonato group, a cyano group or a nitro group or R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, R.sup.3 and R.sup.4, R.sup.9 and R.sup.10, R.sup.10 and R.sup.11 or R.sup.11 and R.sup.

Abstract: A presensitized plate for use in making a lithographic printing plate which comprises an aluminum substrate provided thereon with a light-sensitive layer comprising a polymer having at least two photodimerizable unsaturated double bonds in the molecule, wherein the light-sensitive layer further comprises a compound having at least one photodimerizable unsaturated double bond and at least one phosphinyl group in each molecule as well as a molecular weight of not more than 2,000. The presensitized plate shows excellent sensitivity and makes it possible to provide a lithographic printing plate showing high printing durability.