Invention Grant
- Patent Title: Planographic printing plate precursor
- Patent Title (中): 平版印刷版前体
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Application No.: US10179390Application Date: 2002-06-26
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Publication No.: US07341815B2Publication Date: 2008-03-11
- Inventor: Akio Oda , Hideo Miyake , Tomoyoshi Mitsumoto , Takeshi Serikawa , Ikuo Kawauchi , Ippei Nakamura
- Applicant: Akio Oda , Hideo Miyake , Tomoyoshi Mitsumoto , Takeshi Serikawa , Ikuo Kawauchi , Ippei Nakamura
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion PLLC.
- Priority: JP2001-194327 20010627; JP2001-198682 20010629; JP2001-216760 20010717
- Main IPC: G03F7/004
- IPC: G03F7/004

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.
Public/Granted literature
- US20030157434A1 Planographic printing plate precursor Public/Granted day:2003-08-21
Information query
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