Abstract: A photosensitive composition comprising (a) an ethylenically unsaturated double bond-containing compound, (b) a sensitizing dye and (c) a photopolymerization initiator, wherein the sensitizing dye is a phthalocyanine compound showing the maximum absorption within a range of from 750 to 1,200 nm.

Abstract: A positive photosensitive composition comprising an alkali-soluble resin having phenolic hydroxyl groups (a) and a photo-thermal conversion material (b), and not containing a quinonediazide compound, which contains an alkali-soluble resin having phenolic hydroxyl groups, of which at least some are esterified (a-1).

Abstract: A photopolymerizable composition comprising (A) an ethylenically unsaturated compound, (B) a cyanine dye and (C) a photopolymerization initiator, wherein the cyanine dye of component (B) is a cyanine dye of a structure having hetero atoms connected via a polymethine chain, and the polymethine chain has at least one substituent of the following formula (.alpha.): ##STR1## wherein Q.sup.1 and Q.sup.2 are optional substituents, which may be connected to form a ring.

Abstract: A positive photosensitive composition comprising an alkali-soluble organic high molecular substance having phenolic hydroxyl groups and an acid color forming dye.

Abstract: A radiation sensitive composition comprising a film-forming resin and a bis(sulfonyl)diazomethane compound of the following formula (1) or (2): ##STR1## wherein each of R.sup.1 and R.sup.3 is a linear, branched or cyclic alkyl group which may be substituted, R.sup.2 is a halogen atom, an alkoxy group which may be substituted, a nitro group, a cyano group, a nitrile group or an amide group, and each of R.sup.4, R.sup.5 and R.sup.6 which are independent of one another, is a linear, branched or cyclic alkyl group which may be substituted, a halogen atom, an alkoxy group which may be substituted, a nitro group, a cyano group, a nitrile group or an amide group.

Abstract: A photopolymerizable composition for a color filter, which comprises a compound having at least one ethylenically unsaturated double bond, a photopolymerization initiator, and a red, green or blue colorant and which, when formed into a coating film having a dried film thickness of at most 1 .mu.m, has an optical density of at least 1.1.

Abstract: A photosensitive composition comprising(a) a resin selected from the group consisting of novolak resins and polyvinylphenol resins;(b) an amino compound derivative capable of curing the resin;(c) at least one member selected from the group consisting of cyanine compounds of the following formula (I) and polymethine compounds of the following formula (II), as a compound showing absorption in a near infrared wavelength region: ##STR1## (d) a photosensitive acid-forming agent.

Abstract: A photopolymerizable composition for a color filter, which comprises a photopolymerization initiator system, a compound having at least one ethylenically unsaturated double bond, a colorant, and a phosphoric (meth)acrylate compound and/or an organic carboxylic anhydride having a molecular weight of at most 800, wherein the content of the colorant is from 20 to 90 wt % based on the total solid content.

Abstract: A photopolymerizable composition comprising an addition polymerizable compound having at least one ethylenically unsaturated double bond and a photopolymerization initiator system, wherein the photopolymerization initiator system comprises:(a) a titanocene compound, and(b) at least one coumarin compound of the following formula (I): ##STR1## wherein (i) each of R.sup.1, R.sup.2 and R.sup.5 is a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group, each of R.sup.3 and R.sup.4 is an alkyl group, provided that at least one of R.sup.3 and R.sup.4 is a C.sub.4-16 alkyl group, or (ii) R.sup.1 is a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group, and at least one set of R.sup.2 and R.sup.3, and R.sup.4 and R.sup.5, is connected to form an alkylene group substituted by a lower alkyl group, provided that when they do not form the connecting group, each of R.sup.2 and R.sup.5 is a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group, and each of R.sup.3 and R.sup.

Abstract: A photopolymerizable composition comprising an addition polymerizable compound having at least one ethylenically unsaturated double bond and a photopolymerization initiator system, wherein the photopolymerization initiator system comprises:(a) a sensitizer of the formula (I) ##STR1## wherein -A is ##STR2## wherein each of R.sup.1 and R.sup.2 is a hydrogen atom, an alkyl group, an aryl group or a halogen atom, each of R.sup.3 and R.sup.4 is an alkyl group which may have substituents, each of R.sup.5 to R.sup.8 is a hydrogen atom, an alkyl group or an alkoxy group, or R.sup.3 and R.sup.4, R.sup.3 and R.sup.5 and/or R.sup.4 and R.sup.6 bond to each other to form a ring structure, and n is 0, 1 or 2; and each of X.sup.1 and X.sup.

Abstract: A photopolymerizable composition comprising at least an addition polymerizable compound having at least one ethylenically unsaturated double bond and a photopolymerization initiator system, which system comprises (a) a sensitizer of the formula (I): ##STR1## wherein each of R.sup.1 to R.sup.6 is hydrogen, halogen, alkyl, aryl, aralkyl, acyl, alkoxycarbonyl, optionally substituted hydrocarbon ring, optionally substituted heterocyclic residue or --SO.sub.3 --R.sup.8, wherein R.sup.8 is hydrogen, alkyl, aryl, aralkyl, alkali metal, or quaternary ammonium, R.sup.7 is hydrogen, alkyl, aryl, aralkyl, optionally substituted hydrocarbon ring, or optionally substituted heterocyclic group, each of X.sup.1 and X.sup.2 is halogen, alkyl, aryl, aralkyl, optionally substituted hydrocarbon ring, or optionally substituted heterocyclic group, and (b) a titanocene compound.

Abstract: Disclosed herein is a photosensitive composition comprising:(A) 5 to 60 wt % of an o-quinonediazide compound;(B) 0.05 to 10 wt % of an s-triazine compound(C) 0.01 to 10 wt % of a dye for changing the color tone by the interaction with the photodecomposition product of the said s-triazine compound;(D) 30 to 90 wt % of a novolak resin containing less than 5 wt % of phenols; and(E) 1 to 60 wt % of a vinyl-based polymer having at least a phenolic hydroxyl group.

Abstract: There is disclosed an image forming method which comprises forming an image portion by exposing and developing an image forming material having a light-sensitive composition, and transferring only the image portion onto an image receiving material with the non-image portion of the image receiving material being exposed, wherein the light-sensitive composition contains:(1) at least one selected from:(a) o-quinonediazide compounds; and(b) compositions containing both of a photoacid generating agent and a compound having at least one bond decomposable with the acid; and(2) a polymeric compound having a structure unit represented by the following formula in the molecular structure:CH.sub.2 --CH(OCOR)--wherein R represents an alkyl group having 1 to 17 carbon atoms.