| 摘要 |
PURPOSE:To enhance image density and to improve resistance to development stains due to a dry developing process by using a specified copolymer for a precoat resin layer. CONSTITUTION:A precoat resin layer and a photosensitive layer are formed on a support to form a 2-component type diazo copying material, and a copolymer of at least one kind of a monomer selected from acrylates and methacrylates, and at least one kind of monomer selected from acrylonitrile and vinyl acetate is used for said precoat resin layer. Said precoat resin layer may contain other org. and inorg. fine particles, other monomer units of said copolymer, other resins, etc., in an amt. of about 0.1-5g/m<2> by dry basis. |
