Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Reexamination Certificate
2007-04-17
2007-04-17
Hamilton, Cynthia (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
C430S302000
Reexamination Certificate
active
10530632
ABSTRACT:
A photosensitive resin printing plate precursor including: a photosensitive resin layer (A) containing a water-soluble or water-dispersible resin and an ultraviolet-curable monomer; and a water-insoluble heat-sensitive mask layer (C) containing an infrared-absorbing material, deposited in that order on a support is disclosed. By introducing a crosslinked structure or a hydrophobic constituent to the heat-sensitive mask layer (C) so as to be insoluble in water, a difference in polarity is produced between the layers (A) and (C) and, thus, mass transfer between the two layers can be prevented. Also, the scratch resistance of the heat-sensitive mask layer (C) can be dramatically enhanced and, thus, the printing plate precursor becomes easy to handle.
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Taggi et al, “Printing Processes”, Kirk-Othmer Encyclopedia of Chemical Technology, 1996, PDF version from online at Wiley InterScience, 59 pages.
RN 1680-21-3, Registry, ACS on STN, copyright 2006, “Light Acrylate 3EG-A”.
Adachi Tamio
Ichii Yoshiki
Ichikawa Michihiko
Tanaka Shinji
DLA Piper (US) LLP
Hamilton Cynthia
Toray Industries Inc.
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