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    2.
    发明专利
    未知

    公开(公告)号：DE60137398D1

    公开(公告)日：2009-03-05

    申请号：DE60137398

    申请日：2001-11-30

    Applicant: FUJIFILM CORP

    Inventor： MIYAKE HIDEO ,  ODA AKIO ,  MITSUMOTO TOMOYOSHI ,  IWATO KAORU

    IPC: B41C1/10

    Abstract: The present invention relates to a positive planographic printing plate precursor, comprising a support having disposed thereon a positive recording layer containing (A) a water-insoluble and alkali-soluble resin, (B) an infrared absorbent and (C) an organic quaternary ammonium salt, wherein solubility of the recording layer in an aqueous alkali solution is increased by exposure to an infrared laser, wherein the organic quaternary ammonium salt (C) has in a molecule thereof at least one of an aryl group and a carbonyl group.

    3.
    发明专利
    未知

    公开(公告)号：AT411895T

    公开(公告)日：2008-11-15

    申请号：AT02014017

    申请日：2002-06-27

    Applicant: FUJIFILM CORP

    Inventor： ODA AKIO ,  MIYAKE HIDEO ,  MITSUMOTO TOMOYOSHI ,  SERIKAWA TAKESHI ,  KAWAUCHI IKUO ,  NAKAMURA IPPEI

    IPC: B41C1/10 ,  B41M5/36

    Abstract: A positive planographic printing plate precursor includes a support having disposed thereon a lower thermosensitive layer containing a water-insoluble but alkali-soluble polymer compound and an upper thermosensitive layer containing a water-insoluble but alkali-soluble polymer compound, with alkali-solubility increasing under heat, wherein (i) both the upper thermosensitive layer and the lower thermosensitive layer contain an IR absorbing dye, with the ratio of the IR absorbing dye concentration in the upper thermosensitive layer to the IR absorbing dye concentration in the lower thermosensitive layer is 1.6 to 10.0, and/or (ii) the upper thermosensitive layer and the lower thermosensitive layer contain different IR absorbing dyes, and/or (iii) at least one of the upper thermosensitive layer and the lower thermosensitive layer contains an IR absorbent having, in one molecule, at least two chromophoric groups that absorb IR light, with the chromophoric groups bonding to each other via a covalent bond.

    4.
    发明专利
    未知

    公开(公告)号：AT497882T

    公开(公告)日：2011-02-15

    申请号：AT08018150

    申请日：2001-11-30

    Applicant: FUJIFILM CORP

    Inventor： MIYAKE HIDEO ,  ODA AKIO ,  MITSUMOTO TOMOYOSHI ,  IWATO KAORU

    IPC: B41C1/10

    Abstract: The present invention relates to a positive planographic printing plate precursor, comprising a support having disposed thereon a positive recording layer containing (A) a water-insoluble and alkali-soluble resin, (B) an infrared absorbent and (C) an organic quaternary ammonium salt, wherein solubility of the recording layer in an aqueous alkali solution is increased by exposure to an infrared laser, wherein the organic quaternary ammonium salt (C) has in a molecule thereof at least one of an aryl group and a carbonyl group.

    5.
    发明专利
    未知

    公开(公告)号：AT420767T

    公开(公告)日：2009-01-15

    申请号：AT01128353

    申请日：2001-11-30

    Applicant: FUJIFILM CORP

    Inventor： MIYAKE HIDEO ,  ODA AKIO ,  MITSUMOTO TOMOYOSHI ,  IWATO KAORU

    IPC: B41C1/10

    Abstract: The present invention relates to a positive planographic printing plate precursor, comprising a support having disposed thereon a positive recording layer containing (A) a water-insoluble and alkali-soluble resin, (B) an infrared absorbent and (C) an organic quaternary ammonium salt, wherein solubility of the recording layer in an aqueous alkali solution is increased by exposure to an infrared laser, wherein the organic quaternary ammonium salt (C) has in a molecule thereof at least one of an aryl group and a carbonyl group.

    6.
    发明专利
    未知

    公开(公告)号：DE60229470D1

    公开(公告)日：2008-12-04

    申请号：DE60229470

    申请日：2002-06-27

    Applicant: FUJIFILM CORP

    Inventor： ODA AKIO ,  MIYAKE HIDEO ,  MITSUMOTO TOMOYOSHI ,  SERIKAWA TAKESHI ,  KAWAUCHI IKUO ,  NAKAMURA IPPEI

    IPC: B41C1/10 ,  B41M5/36

    Abstract: A positive planographic printing plate precursor includes a support having disposed thereon a lower thermosensitive layer containing a water-insoluble but alkali-soluble polymer compound and an upper thermosensitive layer containing a water-insoluble but alkali-soluble polymer compound, with alkali-solubility increasing under heat, wherein (i) both the upper thermosensitive layer and the lower thermosensitive layer contain an IR absorbing dye, with the ratio of the IR absorbing dye concentration in the upper thermosensitive layer to the IR absorbing dye concentration in the lower thermosensitive layer is 1.6 to 10.0, and/or (ii) the upper thermosensitive layer and the lower thermosensitive layer contain different IR absorbing dyes, and/or (iii) at least one of the upper thermosensitive layer and the lower thermosensitive layer contains an IR absorbent having, in one molecule, at least two chromophoric groups that absorb IR light, with the chromophoric groups bonding to each other via a covalent bond.

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