US 11,745,531 B2
Printing plate precursor, printing plate precursor laminate, method for making printing plate, and printing method
Shuji Shimanaka, Shizuoka (JP); and Shumpei Watanabe, Shizuoka (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Mar. 19, 2021, as Appl. No. 17/206,937.
Application 17/206,937 is a continuation of application No. PCT/JP2019/038030, filed on Sep. 26, 2019.
Claims priority of application No. 2018-185922 (JP), filed on Sep. 28, 2018.
Prior Publication US 2021/0206188 A1, Jul. 8, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. B41N 3/03 (2006.01); B41N 1/04 (2006.01)
CPC B41N 1/04 (2013.01) [B41N 3/03 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for making a printing plate, comprising:
providing a printing plate precursor comprising:
an aluminum support,
an image recording layer which is provided at a printing surface side of the aluminum support and includes a polymer compound having a particle shape, and
an optional layer which is provided at the printing surface side,
wherein the printing plate precursor contains particles in the image recording layer or the optional layer,
the modulus of elasticity of the particles is 0.7 GPa or more,
in a case where the Bekk smoothness of an outermost layer surface at the printing surface side is denoted by A second, the following expression (1) is satisfied,
the polymer compound is thermoplastic polymer particles or a microgel, and
the thermoplastic polymer particles include styrene and/or acrylonitrile as a constitutional unit:
A≤1,000  (1);
image-exposing the printing plate precursor; and
supplying at least one of printing ink or dampening water to remove an unexposed area of the image recording layer on a printing machine and make the printing plate.