Invention Grant
- Patent Title: Method for preparing flexographic printing plates
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Application No.: US15718357Application Date: 2017-09-28
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Publication No.: US10207491B2Publication Date: 2019-02-19
- Inventor: M. Zaki Ali , Richard R. Ollmann, Jr.
- Applicant: Eastman Kodak Company
- Applicant Address: US NY Rochester
- Assignee: EASTMAN KODAK COMPANY
- Current Assignee: EASTMAN KODAK COMPANY
- Current Assignee Address: US NY Rochester
- Agent J. Lanny Tucker
- Main IPC: G03F7/20
- IPC: G03F7/20 ; B41C1/00 ; B41C1/10 ; G03F7/004 ; G03F7/24

Abstract:
Flexographic printing members are prepared from a flexographic printing plate precursor consisting essentially of: backing film, water- or water-dispersible photosensitive layer, and cover sheet in contact with the photosensitive layer. The cover sheet is removed and a mask element is laminated directly in contact with the photosensitive layer. Exposure through the mask element provides exposed regions and non-exposed regions. The non-exposed regions are removed with an aqueous developer having: a) a C12-20 saturated or unsaturated fatty acid (or alkali metal salt) at 0.25-2.0 weight %, and at least 85 weight % of a C18 mono- or poly-unsaturated fatty acid (or alkali metal salt); b) an aminopolycarboxylic acid (or alkali metal salt) at 0.05-0.30 weight %; c) a buffer at 05-0.60 weight %; and d) water. The photosensitive layer has a controlled release of 5-500 g/cm using ASTM D-3330 Method D, between its front imaging surface and the mask element.
Public/Granted literature
- US20180134030A1 METHOD FOR PREPARING FLEXOGRAPHIC PRINTING PLATES Public/Granted day:2018-05-17
Information query
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