Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making printing plates
Reexamination Certificate
2007-01-02
2007-01-02
Hamilton, Cynthia (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Making printing plates
C430S945000, C430S306000
Reexamination Certificate
active
10866800
ABSTRACT:
A plate-making method is capable of recording a sharp image on a photosensitive plate, and is applicable to a process operation executed in a light room, while adverse influences caused by laser flares can be hardly received. Ultra-short pulse laser light emitted from a Ti:Al2O3laser light source is modulated by an AOM (acousto-optic modulating element). The modulated laser light is focused by a collective lens onto a high-sensitive photopolymer layer of a photosensitive plate-making material. The focused ultra-short pulse laser light may cause a photopolymerization reaction in a laser-light-irradiated portion of the high-sensitive photopolymer layer by way of a multiple photon absorption phenomenon, so as to form a hardened portion.
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“Modulate”, “amplitude”, “frequency”, “phase”, 11 pages from yourDictionary.com, Copyright 1996-2002, yourDictionary.com Merriam-Websters Collegiate Dictionary.
Harada Akinori
Mori Nobufumi
Fuji Photo Film Co. , Ltd.
Hamilton Cynthia
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