Abstract: A cationic polymerizable composition comprising a cationic polymerizable mixture, a cationic polymerization initiator and an amino alcohol, wherein the amino alcohol contains two hydroxyl groups and one carbon chain containing a carbon atom having one or no hydrogen atom bonded to the carbon atom, an actinic ray curable ink-jet ink using the same, and a method of stabilizing the cationic polymerizable composition.

Abstract: Disclosed is an actinic ray curable ink-jet ink comprising a an epoxy compound having at least two oxirane rings and a linkage chain linking the two oxirane rings, wherein the linkage chain has a branched structure.

Abstract: A method for storing a cationic polymerizable composition comprising an acid generating agent, a cationic polymerizable compound and water, the method including the step of: placing the cationic polymerizable composition in a water impermeable container maintaining a content of water in the cationic polymerizable composition at a level of at least 0.2 weight % based on the total weight of the cationic polymerizable composition.

Abstract: An active energy ray curable composition containing an epoxy compound having at least one oxirane ring having substituents at positions &agr; and &bgr; of the oxirane ring.

Abstract: An active energy ray curable ink-jet ink comprising an epoxy compound containing and alicyclic epoxy group and an epoxyfied fatty acid ester group, and a printed material used therewith.

Abstract: Actinic ray curable inks is disclosed. The ink contains at least one kind of epoxidized fatty acid ester or epoxidized fatty acid glyceride, as well as by further containing an oxetane compound, a cation polymerization initiator and a colorant.

Abstract: A photocurable ink for ink-jet recording, comprising an oxetane compound having a substituent at the 2-position of the molecule.

Abstract: Disclosed is an image-formable material which comprises a support provided thereon a releasable cushion layer and an image-formable layer in this order,wherein the image-formable layer can be peeled off from the releasable cushion layer, the image-formable layer is transferable, and the releasable cushion layer comprises two or more layers and satisfies all of the following conditions (1), (2) and (3):(1) a lower layer itself has a Vicat softening temperature measured according to JIS-K7206 of 65.degree. C. or lower;(2) 65.degree. C.<Vicat softening temperature measured according to JIS-K7206 of uppermost layer resin .ltoreq.150.degree. C.; and(3) film thickness (.mu.m) of uppermost layer <?10log{(X-65)/230+1}!.sup.-1 wherein X represents a Vicat softening temperature measured according to JIS-K7206 of an uppermost layer resin.

Abstract: A method of producing a printing plate is disclosed, which comprises the steps of a) providing, on an aluminium support, a photo-hardenable light-sensitive layer on a 50 .mu.m or less thick film to obtain a light-sensitive plate, the surface on the light-sensitive layer side of said support is electrolytically etched in a nitric acid solution to have an average surface roughness R.sub.a of 0.1 to 0.6 .mu.m; b) imagewise exposing the photo-hardenable photosensitive layer of the light-sensitive plate; c) applying heat or pressure to the exposed light-sensitive plate; d) removing the exposed light-sensitive layer from the light-sensitive plate to leave an unexposed light-sensitive layer on the aluminium support; and e) overall exposing the unexposed light-sensitive layer to harden the same.

Abstract: Disclosed is a multi-color transfer image forming method, which comprises subjecting a colored image forming material having a coloration recording layer comprising at least two layers and containing a photosensitive material and a colorant on a support to aqueous development after imagewise exposure, thereby forming a colored image, transferring the colored image to an image receiving member through the outermost surface of the coloration recording layer and then transferring at least one colored image with different hue onto the same image receiving member in conformity with the colored image, characterized in that the layer of the coloration recording layer remotest from the support is a layer adherable to the image receiving member, and only the colored image portion is transferred onto the image receiving member to have the image receiving member surface exposed at the non-image portion of the multi-color image.

Abstract: Disclosed is a light-sensitive litho printing plate requiring no dampening water having a primer layer, a light-sensitive layer and a silicone rubber layer in this order on a support, characterized in that the above primer layer contains (1) an ethylenic unsaturated compound having a polymerizable unsaturated group and (2) a photopolymerization initiator, and has a tensile strength of 10 Kg/cm.sup.2 or more and a Vickers hardness of 70 or less.

Abstract: The invention provides a method of transferring an image from a transferring medium onto a record sheet. The method includes steps of setting a record sheet on a rotatable drum; superposing a transferring medium, in which only an image to be transferred is formed on a support material of the transferring medium, on the record sheet; and pressing the transferring medium and the record sheet onto the drum by a pressing roller while rotating the drum so that only the image is transferred to the record sheet.

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.

Abstract: A light-sensitive composition for use in the preparation of positive-type light-sensitive lithographic printing plate which comprises an o-naphthoquinone diazide compound and novolak resin in which the novolak resin comprises two different novolak resins each being prepared by the polycondensation or co-polycondensation of an aldehyde with at least one compound selected from the group consisting of phenol, m-cresol, o-cresol and p-cresol.

Abstract: A metal image forming material in which the thin metal layer can be etched in short period to provide a sharp image without a strong etchant is disclosed. Said metal image forming material comprises a support, at least one metal layer and an overlying light sensitive layer. Said metal layer is formed by vapor-depositing a metal on the support at an angle with respect to the surface of the support.

Abstract: There are disclosed a photopolymerizable composition comprising an organic solvent-soluble ethylenic unsaturated compound, an organic solvent-dispersible, water-insoluble granular dispersion and an organic solvent-soluble photopolymerization initiator having mutually dissolved or dispersed in a solvent composed mainly of an organic solvent, and an image-forming material using the composition.According to this invention, there are provided a photopolymerizable composition which is developable with water in a short period of time, has high film strength and water resistance of a photosensitive layer, high lipophilic properties and superior film-forming capability and can produce a highly sensitive resist as well as an image-forming material using said composition.

Abstract: There is disclosed a process for forming a metallic image which comprises treating a composite material for forming a metallic image in the presence of a metal chelating agent. Also disclosed is a composite material for use in the process containing a support, a metallic thin layer and a light-sensitive resin layer, wherein a metal chelating agent is included in at least one layer on the support, and a treating solution for the same wherein the metal chelating agent is included therein.According to the invention, it is possible to obtain a metallic image having highly sharp edges in the etched portions.