Title:
PHOTOSENSITIVE NEGATIVE IMAGE TYPE PLANOGRAPHIC PRINTING PLATE PRECURSOR AND LITHOGRAPHIC PRINTING PLATE PLATEMAKING METHOD USING SAME
Document Type and Number:
WIPO Patent Application WO/2023/071054
Kind Code:
A1
Abstract:
Disclosed in the present invention are a photosensitive negative image type planographic printing plate precursor and a lithographic printing plate platemaking method using same. The planographic printing plate precursor comprises: (i) an aluminum plate substrate, a phosphate/fluoride-containing hydrophilic layer covering the surface of the aluminum plate substrate, and the hydrophilic layer containing the following components in parts by mass: 90-99.8 parts of phosphate and 0.2-10 parts of fluoride; and (ii) an imageable coating layer coating the surface of the hydrophilic layer of the aluminum plate substrate, the imageable coating layer containing the following imageable composition in parts by mass: 25-65 parts of a radical polymerizable compound, 0.5-25 parts of a photoinitiator, 10-60 parts of a binder, and 1-20 parts of a development accelerator. The platemaking method comprises the following steps: (1) exposing a planographic printing plate precursor according to a desired image by using a laser, so as to form an exposed region and an unexposed region; and (2) removing the unexposed region from the exposed printing plate precursor by means of a development process to obtain a desired planographic printing plate. The use of the imageable compositions and the platemaking method can implement a flexible development process of "on-press development" or "off-press development", and the obtained printing plate has excellent printing performance.
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Inventors:
WENG YINQIAO (CN)
GAO MIAO (CN)
XU NENGPING (CN)
YING ZUOTING (CN)
CHANG SHIWANG (CN)
PAN FENG (CN)
MA XIANYAO (CN)
JIN JIANCHENG (CN)
TAO TING (US)
GAO MIAO (CN)
XU NENGPING (CN)
YING ZUOTING (CN)
CHANG SHIWANG (CN)
PAN FENG (CN)
MA XIANYAO (CN)
JIN JIANCHENG (CN)
TAO TING (US)
Application Number:
PCT/CN2022/084722
Publication Date:
May 04, 2023
Filing Date:
April 01, 2022
Export Citation:
Assignee:
ZHEJIANG KONITA NEW MAT CO LTD (CN)
International Classes:
B41C1/10; G03F7/09; G03F7/32
Foreign References:
| CN113954502A | 2022-01-21 | |||
| CN113942289A | 2022-01-18 | |||
| CN101861547A | 2010-10-13 | |||
| CN107499016A | 2017-12-22 | |||
| CN101322075A | 2008-12-10 | |||
| CN111433682A | 2020-07-17 | |||
| CN1924703A | 2007-03-07 | |||
| EP0950517A1 | 1999-10-20 |
Attorney, Agent or Firm:
WENZHOU OUYUE PATENT AGENTS CO.,LTD (CN)
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