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    FIXING METHOD FOR MOISTENING-UNREQUIRED NEGATIVE TYPE LITHOGRAPHY PRINTING BOARD
    43.
    发明专利
    FIXING METHOD FOR MOISTENING-UNREQUIRED NEGATIVE TYPE LITHOGRAPHY PRINTING BOARD 失效

    公开(公告)号：JPS57192957A

    公开(公告)日：1982-11-27

    申请号：JP7797581

    申请日：1981-05-25

    Applicant: TORAY INDUSTRIES

    Inventor： FUJITA TAKASHI ,  TSUDA MIKIO ,  KOBASHI SADAO

    IPC: G03F7/00 ,  G03F7/075

    Abstract: PURPOSE:To obtain a negative type moistening-unrequired lithography in which a photosensitive layer remains as a picture part by coating a photoseparable photosensitive layer on the surface, and further adding a silicone rubber layer on said surface and removing only the silicone rubber layer applied on an exposed part. CONSTITUTION:A supporting member is provided with a photoseparative photosensitive layer denatured by bridging a photosoluble type photosensitive compound with a multi-functional compound or coupling an active radical in the photosoluble type photosensitive compound with a single functional compound and having characteristics that are hardly soluble or unsoluble in a developing solution. Said photosensitive layer is coated with a silicone rubber layer whose main component is linear polysiloxane. After being laminated with a protective layer if necessary, said silicone rubber layer is exposed and developed. As the result of development, only the silicone rubber layer on the exposed part is removed and the photodetective layer remains because it is unsoluble in the developing solution through bridge or denature. A printing board is completed by heat fixing.

    LITHOGRAPHIC PRINTING MATERIAL WITHOUT REQUIRING DAMPENING WATER
    44.
    发明专利
    LITHOGRAPHIC PRINTING MATERIAL WITHOUT REQUIRING DAMPENING WATER 失效

    公开(公告)号：JPS5584939A

    公开(公告)日：1980-06-26

    申请号：JP15758778

    申请日：1978-12-22

    Applicant: TORAY INDUSTRIES

    Inventor： KINASHI TAKAO ,  FUJITA TAKASHI

    IPC: G03F7/09 ,  G03F7/00 ,  G03F7/075

    Abstract: PURPOSE:To strengthen the adhesion and increase the print resistance, by using a polymer containing a specified silyl group as adhesive, in a lithographic plate without requiring dampening water using the silicone substance provided in the back of a substrate as non-image part. CONSTITUTION:Using a (meth)acrylate ester having the silyl group shown in the formula as the ester residual group as the repeating unit, a copolymer with other monomer or compound by graft polymerization is used as adhesive. A substrate of paper, plastic sheet or the like is coated with the solution of said polymer, and dried. On the other hand, a PP film or the like is coated with a paint of silicone substance having crosslinking agent, Photo sensitizer, etc., being mainly composed of linear organic polysiloxane by thousands to tens of thousand of molecular weight, and heated and dried, thus providing a photosensitive layer. By press-fitting said substrate deposited with adhesive layer and this PP film, a lithographic printing plate without requiring dampening water is obtained. The image is exposed on this plate, the PP film is separated and developed, so that a printing plate is obtained.

    LITHOGRAPHIC PRINTING PLATE WITHOUT REQUIRING DAMPENING WATER
    45.
    发明专利
    LITHOGRAPHIC PRINTING PLATE WITHOUT REQUIRING DAMPENING WATER 失效

    公开(公告)号：JPS5559466A

    公开(公告)日：1980-05-02

    申请号：JP13179778

    申请日：1978-10-26

    Applicant: TORAY INDUSTRIES

    Inventor： FUJITA TAKASHI ,  IWAMOTO MASAO

    IPC: G03F7/00 ,  G03F7/022

    Abstract: PURPOSE:To obtain the lithographic printing plate of good reproducibility of dots and superior printing resistance which does not require dampening water by laminating the specific photosensitive layer containing orthoquinone diazide compound, adhesive layer and silicone rubber layer on a substrate. CONSTITUTION:The photosensitive layer of about 0.5-5mu in thickness which is composed primarily of orthoquinone diazide compound (napthol quinone-1,2-diazide-5-sulfonic acid portion esterified matter of novolak resin of rate of esterification about 35-65% is desirable) and whose ethanol soluble component is 20wt% or less, the adhesive layer of about 10mmu to 0.5mu in thickness composed of aminosilane such as gamma-aminopropyl triethoxy silane and the silicone rubber (cold setting type is preferable) layer of about 0.5-10mu in thickness are laminated in this order on a substrate such as of aluminum plate, polyethylene terephthalate, or the like to provide the captioned printing plate. Here, polar organic solvents such as alcohols, ethers, etc. are used for the developing solution.

    MAGNETIC RECORDING MEDIUM
    49.
    发明专利
    MAGNETIC RECORDING MEDIUM 失效

    公开(公告)号：JPS5868224A

    公开(公告)日：1983-04-23

    申请号：JP16163981

    申请日：1981-10-09

    Applicant: TORAY INDUSTRIES

    Inventor： FUJITA TAKASHI ,  SHINOHARA KOUICHI

    IPC: G11B5/66 ,  C08L67/02 ,  G11B5/64 ,  G11B5/73

    Abstract: PURPOSE:To improve the coefft. of wear and to reduce the meandering and fluctuation, by forming a ferromagnetic thin film on a molded polymer substrate having vermicular minute protrusions elongated in the running direction on the surface. CONSTITUTION:An aqueous emulsion contg. at least one of silicone with 40,000- 250,000mol.wt. and styrene-butadiene rubber with 20,000-1,000,000mol.wt., and a water soluble polymer with 10,000-2,000,000mol.wt. as principal components or further contg. natural wax is applied to both sides of a smooth polyester film stretched in one direction, and the applied emulsion is dried. The film is stretched in the direction perpendicular to said one direction at a speed below the running speed of the film or further stretched in said one direction and heat treated to form vermicular protrusions 1 parallel to the running direction. By forming a ferromagnetic thin film on the protrusions 1, a magnetic recording medium is obtd.

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