Invention Grant
- Patent Title: Method for making a lithographic printer plate precursor
- Patent Title (中): 制作平版印刷版原版的方法
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Application No.: US12594091Application Date: 2008-05-15
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Publication No.: US08632954B2Publication Date: 2014-01-21
- Inventor: Peter Hendrikx , Willi-Kurt Gries , Marc Van Damme
- Applicant: Peter Hendrikx , Willi-Kurt Gries , Marc Van Damme
- Applicant Address: BE Mortsel
- Assignee: Agfa Graphics NV
- Current Assignee: Agfa Graphics NV
- Current Assignee Address: BE Mortsel
- Agency: Leydig, Voit & Mayer, Ltd.
- Priority: EP07108233 20070515
- International Application: PCT/EP2008/055965 WO 20080515
- International Announcement: WO2008/138966 WO 20081120
- Main IPC: B41N1/00
- IPC: B41N1/00 ; B41M5/00 ; G03F7/00 ; G03F7/26

Abstract:
A method for making a lithographic printing plate precursor is disclosed comprising the steps of a. providing a lithographic printing plate precursor including a support having a hydrophilic surface or which is provided with a hydrophilic layer, a photopolymerizable coating comprising a photopolymerizable composition, and an overcoat layer comprising a water soluble low molecular weight acid, wherein said overcoat layer has a surface pH-value ranging between 1 to 6; b. image-wise exposing the precursor; c. optionally heating the exposed precursor; d. processing the obtained precursor by applying a gum solution and optionally brushing the precursor, and/or by mounting the precursor on a plate cylinder of a lithographic printing press and rotating the plate cylinder while feeding dampening liquid and/or ink to the coating. The printing plate obtained after imaging and processing in an off-press configuration with a gum solution or in an on-press configuration with fountain solution and ink shows an improved roll-up performance in the start-up of a printing process on a printing press.
Public/Granted literature
- US20100129755A1 METHOD FOR MAKING A LITHOGRAPHIC PRINTER PLATE PRECURSOR Public/Granted day:2010-05-27
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