Title:
感光性凸版印刷原版
Document Type and Number:
Japanese Patent JP6768217
Kind Code:
B2
Abstract:
Provided is a photosensitive relief printing original plate that is suitable for CTP technology and that makes it possible to obtain a printing plate having excellent water developability, excellent printing durability, and good print quality. At least the following are layered sequentially in this water development-type photosensitive relief printing original plate: a support body (A); a photosensitive resin layer (B); an oxygen-blocking division layer (C); and a water-soluble or water-dispersible photosensitive mask layer (D) containing carbon black. The photosensitive relief printing original plate is characterized in that the photosensitive resin layer (B) contains a synthetic polymer compound, a photopolymerizable unsaturated compound, and a photopolymerization initiator, the synthetic polymer compound contains polyether urea-urethane or a polyamide comprising a tertiary nitrogen atom, and the division layer (C) contains a polyvinyl alcohol having a saponification degree of 60-85 mol% and a degree of polymerization of 200-800.
Inventors:
Kazuya Yoshimoto
Application Number:
JP2016557669A
Publication Date:
October 14, 2020
Filing Date:
August 16, 2016
Export Citation:
Assignee:
Toyobo Co., Ltd.
International Classes:
G03F7/095; G03F7/00; G03F7/004; G03F7/032; G03F7/037; G03F7/11
Domestic Patent References:
| JP2013178428A | ||||
| JP2012022229A |
Foreign References:
| WO2010150844A1 |
Attorney, Agent or Firm:
Nobuaki Kazehaya
Noriko Asano
Noriko Asano