Abstract: A heat-sensitive adhesive sheet for bonding a pair of information-recorded faces, belonging to the same sheet or two different sheets of recording material, together by application of heat thereto, which comprises three or more layers, including a support and a synthetic resin layer coated on either side of the support, having a peeling resistance ranging from 10 to 150 g/50 mm between the support and each synthetic resin layer in the T-peel test performed at a peeling speed of 300 mm/min. in the atmosphere of 20.degree. C.

Abstract: A heat-sensitive adhesive sheet for bonding a pair of information-recorded faces, belonging to the same sheet or two different sheets of recording material, together by application of heat thereto, which comprises three or more layers, including a support and a synthetic resin layer coated on either side of the support, having a peeling resistance ranging from 10 to 150 g/50 mm between the support and each synthetic resin layer in the T-peel test performed at a peeling speed of 300 mm/min. in the atmosphere of 20.degree. C.

Abstract: A positive type photosensitive composition developable with water or warm water alone of water-soluble photocrosslinking agent, water-soluble resin and synthetic resin emulsion and further a coloring agent, if necessary.

Abstract: An improvement in a multicolor image-forming method and a multicolor image-forming material applied to the same, employing a heat transfer photosensitive material comprising a transparent substrate, a colored layer which is soluble in water but insolubilizable by light, and a heat-fusible and bondable intermediate layer therebetween.

Abstract: Multicolor image products useful for prepress color proofing. The products are laminates of a transfer support sheet; an adhesive layer of a heat-fusible and bondable material on a surface of said transfer support sheet; an image layer of a first color provided on the adhesive layer and having image areas of a water-insoluble resin component and non-image areas, the image areas being bonded to the surface of the adhesive layer; and one, two or three additional image layers each of a different color other than that of the first image layer.

Abstract: A multi-color image forming material which is in the form of multiple layers on a support, and having, at least two photosensitive layers, the farthest layer from the support being the uppermost photosensitive layer, the photosensitive layers being formed from a water-soluble resin having photocrosslinking ability with diazo resin, a photosensitive water-soluble, organic solvent insoluble diazo resin, and a water dispersible coloring agent which can produce a color tone, each photosensitive layer having a coloring agent which can produce a different color tone; and at least one intermediate layer, each intermediate layer being positioned between each photosensitive layer and the next adjacent photosensitive layer, the intermediate layer being formed from a hydrophobic, water-resistant, organic solvent softenable resin.

Abstract: An image-forming method, wherein the uppermost photosensitive layer of a photosensitive coated face of the multicolor image-forming material is subjected to (A) pattern exposure and the non-exposed area (non-image area) is removed by washing with water and is then dried. Also, an image-forming process, wherein the second photosensitive layer from the top of the photosensitive coated face of a multicolor image-forming material is subjected to (B) pattern exposure through the upper intermediate layer which is contacted with the photosensitive layer and immersed into the organic solvent which softens the resin in the intermediate layer and does not dissolve the components in the photosensitive layer before and after the photocrosslinking reaction except for area on which the image is already formed on the upper layer thereof, the non-exposed area (non-image area) of the second photosensitive layer is removed together with the upper intermediate layer thereof by washing with water and is then dried.

Abstract: A color image forming method wherein a colored, water soluble polymer and a photo-sensitive polymerization initiator are layered upon a transparent base material, exposed to light through a negative original, washed with water to remove unpolymerized material, proofed, and then dyed to an optical density of at least 2.5.

Abstract: A heat-sensitive recording material having a heat-sensitive layer composed mainly of a leuco dye, a phenolic compound and a water-soluble binding agent is characterized in that a combination of bisphenol A and p-phenylphenol is applied as the developer in a ratio by weight between 10:1 and 1:1, preferably 7:1 and 1:1.

Abstract: A heat-sensitive recording material having a heat-sensitive layer composed mainly of a leuco dye and a phenolic compound used as a developer, said heat-sensitive layer containing as a binding agent any one or combinations of polyvinyl alcohol, oxidized starch and etherized starch, and methyl cellulose in a ratio by weight between 98:2 and 90:10.