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1. EP1627733 - Planographic printing plate precursor

Office European Patent Office
Application Number 05017750
Application Date 16.08.2005
Publication Number 1627733
Publication Date 22.02.2006
Publication Kind A3
IPC
B41C 1/10
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
CPROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
1Forme preparation
10for lithographic printing; Master sheets for transferring a lithographic image to the forme
CPC
B41C 1/1008
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
CPROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
1Forme preparation
10for lithographic printing; Master sheets for transferring a lithographic image to the forme
1008by removal or destruction of lithographic material on the lithographic support, e.g. by laser or spark ablation; by the use of materials rendered soluble or insoluble by heat exposure, e.g. by heat produced from a light to heat transforming system; by on-the-press exposure or on-the-press development, e.g. by the fountain of photolithographic materials
B41C 1/1016
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
CPROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
1Forme preparation
10for lithographic printing; Master sheets for transferring a lithographic image to the forme
1008by removal or destruction of lithographic material on the lithographic support, e.g. by laser or spark ablation; by the use of materials rendered soluble or insoluble by heat exposure, e.g. by heat produced from a light to heat transforming system; by on-the-press exposure or on-the-press development, e.g. by the fountain of photolithographic materials
1016characterised by structural details, e.g. protective layers, backcoat layers or several imaging layers
B41C 2201/02
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
CPROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
2201Location, type or constituents of the non-imaging layers in lithographic printing formes
02Cover layers; Protective layers
B41C 2201/14
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
CPROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
2201Location, type or constituents of the non-imaging layers in lithographic printing formes
14characterised by macromolecular organic compounds, e.g. binder, adhesives
B41C 2210/02
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
CPROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
2210Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
02Positive working, i.e. the exposed (imaged) areas are removed
B41C 2210/06
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
CPROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
2210Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
06Developable by an alkaline solution
Applicants FUJI PHOTO FILM CO LTD
Inventors KAWAUCHI IKUO
KAKINO RYUKI
Designated States
Priority Data 2004236766 16.08.2004 JP
Title
(DE) Flachdruckplattenvorläufer
(EN) Planographic printing plate precursor
(FR) Précurseur de plaque d'impression planographique
Abstract
(EN)
A planographic printing plate precursor according to the invention includes: a support; and a recording layer disposed on the support and containing an alkali-soluble polymer compound and an infrared absorber, wherein a contact angle at a surface of the planographic printing plate precursor is 70° or less in a case of oil in water and 140° or more in a case of water in oil. Examples of a method for achieving such surface physical properties include inclusion, in a recording layer, of a polymer having a lipophilic functional group on a side chain thereof. According to the invention, a planographic printing plate precursor for direct print making can be obtained, which precursor improves the image forming property of the recording layer using an alkali-soluble polymer compound, is excellent in the lipophilicity of an image portion and the removing property of a non-image portion, and produces printed matters of high quality with excellent reproducibility even in the image formation with an FM screen or high number of output lines.