Electrolysis: processes – compositions used therein – and methods – Electrolytic coating – Coating selected area
Patent
1998-10-20
2000-04-11
Gorgos, Kathryn
Electrolysis: processes, compositions used therein, and methods
Electrolytic coating
Coating selected area
205221, 205921, 427272, 427282, 427259, 427270, B41C 308, C25D 548, C25D 700, B05D 132, B05D 500
Patent
active
060484462
ABSTRACT:
The present invention provides several methods for engraving gravure cylinders much more rapidly and at a higher resolution while, at the same time, reducing the engraving cost. The present invention employs a resist that is deposited onto the surface of a gravure cylinder. The resist is capable of being physically and/or chemically changed in response to being exposed to a form of actinic energy, such as a laser beam. The exposed areas of resist allow a material, such as chromium, to be plated onto the surface of the gravure cylinder to form walls that define cells therebetween. In use, the cells contain ink for printing the desired patterns of text and/or images.
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Coolley Ronald B.
Gorgos Kathryn
R.R. Donnelley & Sons Company
Wong Edna
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