Abstract: Disclosed is a processing device of a photo-sensitive material which comprises a conveying device for conveying a photo-sensitive material, a slot die for applying a processing liquid to the photo-sensitive material conveyed by the conveying device, a reservoir tank of the processing liquid, a supply device of the processing liquid for supplying a processing liquid in the reservoir tank of the processing liquid to the slot die, a support roll of the photo-sensitive material arranged at a position opposite to and spaced from a tip of the slot die, a device for detecting a photo-sensitive material, and a driving device for rotating the support roll of the photo-sensitive material which can rotate the support roll at least in the direction reverse to a conveying direction of the photo-sensitive material.

Abstract: Disclosed is a processing device of a photo-sensitive material which comprises a conveying device for conveying a photo-sensitive material, a slot die for applying a processing liquid to the photo-sensitive material conveyed by the conveying device, a reservoir tank of the processing liquid, a supply device of the processing liquid for supplying a processing liquid in the reservoir tank of the processing liquid to the slot die, a support roll of the photo-sensitive material arranged at a position opposite to and spaced from a tip of the slot die, a device for detecting a photo-sensitive material, and a driving device for rotating the support roll of the photo-sensitive material which can rotate the support roll at least in the direction reverse to a conveying direction of the photo-sensitive material.

Abstract: The apparatus for coating a photosensitive material (M) with a processing liquid comprises an activator coating mechanism (43) for metering a constant amount of activator to apply the metered activator to the photosensitive surface of the photosensitive material fed by the pair of introduction rollers. The activator is supplied form a plurality of discharge holes (121) bored in a pipe (122) and is once received by a receiving portion (124). The activator is diffused horizontally and flows downwardly through a plurality of openings (123) bored at the bottom of the receiving portion onto a coating roller (125). The activator is diffused again at the contact between the coating roller and a diffusion film (126) and is coated to the photosensitive material by the coating roller.

Abstract: The invention provides an adhesive sheet comprising a surface stock and an adhesive layer, the adhesive layer containing a copolymer, the copolymer comprising, based on the copolymer;(a) 5 to 40% by weight of at least one member selected from a carboxylic acid-modified rosin ester monomer and a rosin ester monomer, and if desired,(b) 5 to 40% by weight of a (poly)ethylene glycol (meth)acrylate monomer,(c) 30 to 60% by weight of a (meth)acrylic acid C.sub.4-18 alkyl ester monomer, and if desired,(d) 20% by weight or less of an ethylenically unsaturated carboxylic acid-containing monomer, and(e) 20% by weight or less of another monomer which is copolymerizable with components (a), (b) and (c) and component (d) to be used when required. When the adhesive containing the copolymer comprising component (d) and a crosslinking agent, the adhesive sheet has removability.

Abstract: The apparatus for coating a lithographic printing plate or a photosensitive material (M) with a processing liquid comprises first and second pairs of feed rollers (41,42: 44,45) for feeding the photosensitive arterial along a predetermined path. A coating roller (125) is provided therebetween. Guide members (48, 49) contact the bottom surface of the photosensitive material and to guide the photosensitive material. The contacts of the guide members and the photosensitive material are at the levels higher than the coating level at which the processing liquid is applied to the photosensitive material to prevent uneven coating of the photosensitive material with the processing liquid after the trailing edge of the photosensitive material has passed the first pairs of the feed rollers (41,42).

Abstract: Disclosed is a removable adhesive sheet comprising a release liner, an adhesive layer and a surface stock as laminated, wherein the adhesive layer being formed by applying an adhesive to the release liner or to the surface stock, followed by drying,said adhesive comprising (i) an aqueous emulsion of a copolymer obtained by emulsion polymerization and (ii) a polyglycidyl compound having two or more epoxy groups within the molecule thereof,said copolymer comprising (a) 80-99% by weight of a (meth)acrylic acid C.sub.8 -C.sub.12 alkyl ester, (b) 0.3-10% by weight of (meth)acrylonitrile, (c) 0.1-5% by weight of an .alpha.,.beta.-unsaturated carboxylic acid and (d) 0-5% by weight of another copolymerizable monomer,said copolymer having a Mn of not less than 0.1.times.10.sup.4 but less than 5.0.times.10.sup.4, ratio of (Mw/Mn) of 40-800, an average particle size of 100-500 nm and a Tg of not higher than -50.degree. C., andsaid polyglycidyl compound being used in an amount such that the epoxy groups amount to 0.