Erasable printing plate having a smooth pore free metallic surfa

Printing – Planographic – Lithographic printing plates

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Details

101478, B41N 108

Patent

active

058161619

ABSTRACT:
A printing plate which can be repeatedly directly provided with an image and erased and is suitable for a wet offset printing method. The printing plate has a smooth and pore-free surface which is hydrophilic or can be hydrophilized after being provided with an image. The printing plate contains no strong microdipoles and consists of a ceramic, a glass or a metal, in particular of a metal alloy. An erasing and hydrophilizing apparatus preferably integrated in the printing press, repeatedly erases and prepares, i.e. rehydrophilizes, the printing plate for a further image-providing and printing process.

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patent: 4680250 (1987-07-01), Kitamura et al.
patent: 4846065 (1989-07-01), Mayrhofer et al.
patent: 5440987 (1995-08-01), Williams et al.
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