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    METHOD FOR FORMING LITHOGRAPHIC PRINTING PLATES
    2.
    发明授权
    METHOD FOR FORMING LITHOGRAPHIC PRINTING PLATES 有权
    用于生产平版印刷版的

    公开(公告)号：EP0939698B1

    公开(公告)日：2003-09-24

    申请号：EP98939401.0

    申请日：1998-08-14

    申请人： Kodak Polychrome Graphics LLC

    发明人： 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分类号： B41C1/10 ,  B41M5/36 ,  G03F7/004 ,  G03F7/023

    CPC分类号： B41C1/1008 ,  B41C2210/02 ,  B41C2210/06 ,  B41C2210/24 ,  B41C2210/262 ,  B41M5/36 ,  B41M5/368 ,  Y10S430/107 ,  Y10S430/145

    摘要： 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-naphthoquinone 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.

    ON-PRESS DEVELOPABLE IR SENSITIVE PRINTING PLATES
    8.
    发明公开
    ON-PRESS DEVELOPABLE IR SENSITIVE PRINTING PLATES 有权
    红外线感光组合物以及在印刷机上显影的IR敏感印刷板

    公开(公告)号：EP1478516A1

    公开(公告)日：2004-11-24

    申请号：EP03710835.4

    申请日：2003-02-04

    申请人： Kodak Polychrome Graphics LLC

    发明人： TIMPE, Hans-Joachim ,  VON GYLDENFELDT, Friederike

    IPC分类号： B41M5/36 ,  B41C1/10

    CPC分类号： B41C1/1008 ,  B41C1/1016 ,  B41C2201/02 ,  B41C2201/14 ,  B41C2210/04 ,  B41C2210/08 ,  B41C2210/22 ,  B41C2210/24 ,  B41C2210/26 ,  Y10S430/145 ,  Y10S430/146 ,  Y10S430/165

    摘要： The present invention relates to IR-sensitive compositions suitable for the manufacture of printing plates developable on-press. The IR-sensitive compositions comprise:(a) a first polymeric binder which does not comprise acidic groups having a pKa value less than or equal to 8;(b) a second polymeric binder comprising polyether groups(c) an initiator system comprising(i) at least one compound capable of absorbing IR radiation selected from triarylamine dyes, thiazolium dyes, indolium dyes, oxazolium dyes, cyanine dyes, polyanifne dyes, polypyrrole dyes, polythiophene dyes and phthalocyanine pigments;(ii) at least one compound capable of producing radicals selected from polyhaloalkyl-substituted compounds; and(iii) at least one polycarboxylic acid represented by the following formula IR4-(CR5R6)r - Y - CH2COOH (I) wherein Y is selected from the group consisting of O, S and NR7,each of R4, R5 and R6 is independently selected from the group consisting of hydrogen, C1-C4 alkyl, substituted or unsubstituted aryl, -COOH and NR8CH2COOH,R7 is selected from the group consisting of hydrogen, C1-C6 alkyl, -CH2CH2OH, and C1-C5 alkyl substituted with -COOH,R8 is selected from the group consisting of -CH2COOH, -CH2OH and -(CH2)2N(CH2COOH)2 and r is 0, l, 2 or 3, with the proviso that at least one of R4, R5, R6, R7 and R8 comprises a -COOH group or salts thereof, and(d) a free radical polymerizable system comprising at least one member selected from unsaturated free radical polymerizable monomers, oligomers which are free radical polymerizable and polymers containing C=C bonds in the back bone and/or in the side chain groups,wherein the following inequality is met:oxi

    IR-SENSITIVE COMPOSITION AND ON-PRESS DEVELOPABLE IR-SENSITIVE PRINTING PLATES
    10.
    发明授权
    IR-SENSITIVE COMPOSITION AND ON-PRESS DEVELOPABLE IR-SENSITIVE PRINTING PLATES 有权
    红外线感光组合物以及在印刷机上显影的IR敏感印刷板

    公开(公告)号：EP1478516B1

    公开(公告)日：2006-04-12

    申请号：EP03710835.4

    申请日：2003-02-04

    申请人： Kodak Polychrome Graphics, LLC

    发明人： TIMPE, Hans-Joachim ,  VON GYLDENFELDT, Friederike

    IPC分类号： B41M5/36 ,  B41C1/10

    CPC分类号： B41C1/1008 ,  B41C1/1016 ,  B41C2201/02 ,  B41C2201/14 ,  B41C2210/04 ,  B41C2210/08 ,  B41C2210/22 ,  B41C2210/24 ,  B41C2210/26 ,  Y10S430/145 ,  Y10S430/146 ,  Y10S430/165

    摘要： The present invention relates to IR-sensitive compositions suitable for the manufacture of printing plates developable on-press. The IR-sensitive compositions comprise:(a) a first polymeric binder which does not comprise acidic groups having a pKa value less than or equal to 8;(b) a second polymeric binder comprising polyether groups(c) an initiator system comprising(i) at least one compound capable of absorbing IR radiation selected from triarylamine dyes, thiazolium dyes, indolium dyes, oxazolium dyes, cyanine dyes, polyanifne dyes, polypyrrole dyes, polythiophene dyes and phthalocyanine pigments;(ii) at least one compound capable of producing radicals selected from polyhaloalkyl-substituted compounds; and(iii) at least one polycarboxylic acid represented by the following formula IR4-(CR5R6)r - Y - CH2COOH (I) wherein Y is selected from the group consisting of O, S and NR7,each of R4, R5 and R6 is independently selected from the group consisting of hydrogen, C1-C4 alkyl, substituted or unsubstituted aryl, -COOH and NR8CH2COOH,R7 is selected from the group consisting of hydrogen, C1-C6 alkyl, -CH2CH2OH, and C1-C5 alkyl substituted with -COOH,R8 is selected from the group consisting of -CH2COOH, -CH2OH and -(CH2)2N(CH2COOH)2 and r is 0, l, 2 or 3, with the proviso that at least one of R4, R5, R6, R7 and R8 comprises a -COOH group or salts thereof, and(d) a free radical polymerizable system comprising at least one member selected from unsaturated free radical polymerizable monomers, oligomers which are free radical polymerizable and polymers containing C=C bonds in the back bone and/or in the side chain groups,wherein the following inequality is met:oxi