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    2.
    发明专利
    未知

    公开(公告)号：AT250497T

    公开(公告)日：2003-10-15

    申请号：AT98939401

    申请日：1998-08-14

    Applicant: KODAK POLYCHROME GRAPHICS LLC

    Inventor： NGUYEN MY T ,  MERCHANT NISHITH ,  SHIMAZU KEN-ICHI ,  PAPPAS PETER S ,  HALLMAN ROBERT W ,  KESSELMAN JEROME P ,  SAVARIAR-HAUCK CELIN ,  HAUCK GERHARD ,  TIMPE HANS-JOACHIM

    IPC: B41C1/10 ,  B41M5/36 ,  G03F7/004 ,  G03F7/023

    Abstract: A method for directly imaging a lithographic printing surface using infrared radiation without the requirement of pre- or post-UV-light exposure, or heat treatment employs a printing plate which contains a support with a hydrophilic surface overcoated with an imaging layer. The imaging layer contains at least one polymer having bonded pendent groups which are hydroxy, carboxylic acid, tert-butyl-oxycarbonyl, sulfonamide, amide, nitrile, urea, or combinations thereof; as well as an infrared absorbing compound. The imaging layer may contain a second polymer which has bonded pendent groups which are 1,2-napthoquinone diazide, hydroxy, carboxylic acid, sulfonamide, hydroxymethyl amide, alkoxymethyl amide, nitrile, maleimide, urea, or combinations thereof. The imaging layer may also contain a visible absorption dye, a solubility inhibiting agent, or both. In practice, the imaging layer is imagewise exposed to infrared radiation to produce exposed image areas in the imaged layer which have transient solubility in aqueous alkaline developing solution, so that solubility is gradually lost over a period of time until the imaged areas become as insoluble as non-imaged areas. Within a short time period of the imaging exposure, the imaged layer is developed with an aqueous alkaline developing solution to form the lithographic printing surface. In this method, the infrared radiation preferably is laser radiation which is digitally controlled.

    4.
    发明专利
    未知

    公开(公告)号：DE69620353T2

    公开(公告)日：2002-11-21

    申请号：DE69620353

    申请日：1996-11-29

    Applicant: KODAK POLYCHROME GRAPHICS LLC

    Inventor： HALLMAN ROBERT W ,  SHIMAZU KEN-ICHI ,  ZHU HUI

    IPC: B41C1/10 ,  G03F1/00

    Abstract: The invention utilizes ink jet liquid droplets (20a) from one or more printer heads (10) to form an image upon the surface of a printing plate (15) corresponding to digital information depicting the image as provided by a digital computer system which is in digital communication with the printer heads. The droplets from the printer head comprise resin forming reactants which polymerize on the plate surface, alone or in combination with reactants precoated on the plate, to form a printable hard resin image. The resin image so formed provides a lithographic printing plate useful for extended print runs.

    5.
    发明专利
    未知

    公开(公告)号：ES2206975T3

    公开(公告)日：2004-05-16

    申请号：ES98939401

    申请日：1998-08-14

    Applicant: KODAK POLYCHROME GRAPHICS LLC

    Inventor： NGUYEN MY T ,  MERCHANT NISHITH ,  SHIMAZU KEN ,  PAPPAS PETER S ,  HALLMAN ROBERT W ,  KESSELMAN JEROME P

    IPC: B41C1/10 ,  B41M5/36 ,  G03F7/004 ,  G03F7/023

    Abstract: A method for directly imaging a lithographic printing surface using infrared radiation without the requirement of pre- or post-UV-light exposure, or heat treatment employs a printing plate which contains a support with a hydrophilic surface overcoated with an imaging layer. The imaging layer contains at least one polymer having bonded pendent groups which are hydroxy, carboxylic acid, tert-butyl-oxycarbonyl, sulfonamide, amide, nitrile, urea, or combinations thereof; as well as an infrared absorbing compound. The imaging layer may contain a second polymer which has bonded pendent groups which are 1,2-napthoquinone diazide, hydroxy, carboxylic acid, sulfonamide, hydroxymethyl amide, alkoxymethyl amide, nitrile, maleimide, urea, or combinations thereof. The imaging layer may also contain a visible absorption dye, a solubility inhibiting agent, or both. In practice, the imaging layer is imagewise exposed to infrared radiation to produce exposed image areas in the imaged layer which have transient solubility in aqueous alkaline developing solution, so that solubility is gradually lost over a period of time until the imaged areas become as insoluble as non-imaged areas. Within a short time period of the imaging exposure, the imaged layer is developed with an aqueous alkaline developing solution to form the lithographic printing surface. In this method, the infrared radiation preferably is laser radiation which is digitally controlled.

    7.
    发明专利
    未知

    公开(公告)号：AT215444T

    公开(公告)日：2002-04-15

    申请号：AT96119199

    申请日：1996-11-29

    Applicant: KODAK POLYCHROME GRAPHICS LLC

    Inventor： HALLMAN ROBERT W ,  SHIMAZU KEN-ICHI ,  ZHU HUI

    IPC: B41C1/10 ,  G03F1/00

    Abstract: The invention utilizes ink jet liquid droplets (20a) from one or more printer heads (10) to form an image upon the surface of a printing plate (15) corresponding to digital information depicting the image as provided by a digital computer system which is in digital communication with the printer heads. The droplets from the printer head comprise resin forming reactants which polymerize on the plate surface, alone or in combination with reactants precoated on the plate, to form a printable hard resin image. The resin image so formed provides a lithographic printing plate useful for extended print runs.

    10.
    发明专利
    未知

    公开(公告)号：DE69620353D1

    公开(公告)日：2002-05-08

    申请号：DE69620353

    申请日：1996-11-29

    Applicant: KODAK POLYCHROME GRAPHICS LLC

    Inventor： HALLMAN ROBERT W ,  SHIMAZU KEN-ICHI ,  ZHU HUI

    IPC: B41C1/10 ,  G03F1/00

    Abstract: The invention utilizes ink jet liquid droplets (20a) from one or more printer heads (10) to form an image upon the surface of a printing plate (15) corresponding to digital information depicting the image as provided by a digital computer system which is in digital communication with the printer heads. The droplets from the printer head comprise resin forming reactants which polymerize on the plate surface, alone or in combination with reactants precoated on the plate, to form a printable hard resin image. The resin image so formed provides a lithographic printing plate useful for extended print runs.

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