Printing plate precursor and printing plate

Printing – Planographic – Lithographic printing plates

Reexamination Certificate

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Details

Other Related Categories

C101S456000

Type

Reexamination Certificate

Status

active

Patent number

06868787

Description

ABSTRACT:
Disclosed is a printing plate precursor composed of a substrate and provided thereon, a hydrophilic layer having a center line average roughness Ra of from 150 nm to less than 1000 nm and having effective protrusions of from 500 to less than 3000 per mm2, the effective protrusions protruding from an upper plane 1.0 μm farther from the substrate than a center roughness plane in the three dimensional roughness plane of the hydrophilic layer, and having a ratio H/D of not less than 0.15, wherein H represents a height (μm) from the upper plane of the effective protrusions, and D represents a size (μm) of solids formed by the upper plane and the curved surface protruding from the upper plane of the effective protrusions.

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patent: 1 075 942 (2001-02-01), None
patent: 1 167 062 (2002-01-01), None

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