Abstract: This invention provides a blood filter unit capable of obtaining a necessary volume of a plasma or serum sample from blood to be assayed easily at any place, which comprises a blood filtering material and a holder accommodating the blood filtering material and having a nozzle for sucking blood and a filtrate outlet, and the inside of the holder being kept reduced pressure conditions.

Abstract: A light-sensitive composition comprising addition polymerizable ethylenically unsaturated double bond-containing compounds and a photopolymerization initiator comprising (1) at least one compound selected from the group consisting of benzanthrone, substituted benzanthrones (the substituents of which include halogen atoms, alkyl groups having 1 to 5 carbon atoms and alkoxy groups having 1 to 5 carbon atoms), 1,2-benzanthraquinone and substituted benzanthraquinones (substituents of which include halogen atoms, alkyl groups having 1 to 5 carbon atoms and alkoxy groups having 1 to 5 carbon atoms) and (2) at least one compound selected from the group consisting of 4,4'-di-substituted amino-benzophenones represented by the following general formula (a), p-substituted amino-benzaldehyde derivatives represented by the following general formula (b), 2-(p-substituted amino-phenyl)-1,3-dioxolanes represented by the following general formula (c), 4,4'-bis(substituted amino)-N-benzylideneanilines represented by the follow

Abstract: By treating an imagewise exposed and developed image-forming material comprising a support and a light-sensitive resin composition layer with organic solvents miscible with water or with a mixture of water and organic solvents miscible with water, elimination of non-image areas is completed.

Abstract: A light-sensitive composition comprising addition polymerizable ethylenically unsaturated double bond-containing compounds and a photopolymerization initiator comprising (1) at least one compound selected from the group consisting of benzanthrone, substituted benzanthrones (the substituents of which include halogen atoms, alkyl groups having 1 to 5 carbon atoms and alkoxy groups having 1 to 5 carbon atoms), 1,2-benzanthraquinone and substituted benzanthraquinones (substituents of which include halogen atoms, alkyl groups having 1 to 5 carbon atoms and alkoxy groups having 1 to 5 carbon atoms) and (2) at least one compound selected from the group consisting of 4,4'-di-substituted amino-benzophenones represented by the following general formula (a), p-substituted amino-benzaldehyde derivatives represented by the following general formula (b), 2-(p-substituted amino-phenyl)-1,3-dioxolanes represented by the following general formula (c), 4,4'-bis(substituted amino)-N-benzylideneanilines represented by the follow

Abstract: A planographic printing plate material comprising a support and a light sensitive layer provided on the support, the light-sensitive layer being composed of (A) an inorganic material; (B) at least one metal and/or metal compound [(A)/(B) are capable of reacting with each other upon application of electromagnetic radiation] and (C) an organic compound capable of affecting the reaction between the inorganic material (A) and the metal and/or metal compound (B), wherein the inorganic material (A), the metal or metal compound (B), and the organic compound (C) are in contact with each other. When the light-sensitive layer is exposed to electromagnetic radiation, a difference in the hydrophilic or oleophilic nature of the exposed areas and the unexposed areas results, whereby a planographic printing plate is obtained which can be mounted on a printing machine and printed without any other treatments.

Abstract: A dot-etching solution for dot-etching a halftone image of a metal composed mainly of aluminum, the dot-etching solution comprising(1) water,(2) (a) phosphorous acid or (b) phosphorous acid and phosphoric acid,(3) at least one of a bismuth compound and an antimony compound, and(4) at least one compound selected from hydrogen chloride, an alkali metal chloride, calcium chloride and magnesium chloride.

Abstract: A processing-free lithographic printing plate, which comprises a support having deposited thereon a composition containing germanium and sulfur and at least one of a metal or metal compound in a physically mixed state.

Abstract: A processing solution useful for the development of or halftone dot reduction of a metal image-forming material comprising a support, a thin metallic layer composed mainly of aluminum on the support and a photosensitive resin layer on the metallic layer, with the processing solution comprising (1) an alkaline solution, such as an aqueous solution of sodium hydroxide or potassium hydroxide, and (2) at least one compound of the formula (I) or (II):m(brO.sub.3).sub.p (I)m.sub.m (IO.sub.n).sub.p (II)wherein M represents a hydrogen atom or a metal having a valence of 1 to 3, m represents 1, 2, 3, or 5, n represents 3, 4, or 6, and p represents 1, 2 or 3, which solution lends itself to safe storage and handling, and permits rapid and uniform etching of the metallic layer of the metal image-forming material without bubble formation occurring.

Abstract: A process for reducing the size of halftone dot images obtained by exposing and developing a metal image-forming material comprising a support, a thin metallic layer composed mainly of aluminum on the support and a photosensitive resin (or photoresist) layer on the thin metallic layer uniformly by first applying a solution capable of swelling the photosensitive resin layer to those parts which are to be subjected to dot size reduction, and then applying a reducer solution to the parts so treated.