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OwnerHoward A. Fromson, William J. Rozell +1inventors
InventorsHoward A. Fromson, William J. Rozell, Robert F. Gracia
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A metal substrate is treated with a plurality of rotating brushes and a slurry of particulate material such that the treated surface is capable of absorbing incident infrared laser radiation. The substrate is itself capable of being visibly imaged by selective writing with an infrared laser. The substrate is coated with an ablatable coating which is transparent to the imaging infrared laser radiation. Selective exposure to infrared laser radiation ablates this coating in the laser exposed areas as a result of the absorption of infrared radiation by the substrate. The substrate can be anodized after rotary brush graining and still retain its ability to be imaged and ablate a coating. The coated article can be imaged in a computer-to-plate infrared laser imaging device. Depending on the specific coating and substrate selection, the imaged article can be used in a conventional lithographic printing process or in a dryographic printing process.
Printing plate comprising
Printing plate comprising
Printing plate substrate comprising an aluminum substrate which can be visibly imaged by selective exposure to an infrared laser.
Printing plate substrate comprising an anodically oxidized aluminum substrate which has been treated prior to anodizing such that the anodically oxidized substrate can be visibly imaged by selective exposure to an infrared laser.
Printing plate comprising a metal substrate which has been treated such that the substrate can be visibly imaged by selective exposure to an infrared laser, said substrate having a coating transparent to infrared laser radiation which coating can be ablated from said substrate when the substrate is struck by infrared laser radiation after passing through said laser transparent coating.
Printing plate comprising a metal substrate having a coating transparent to infrared laser radiation, said substrate having been treated prior to coating such that said coating can be ablated from said substrate when the substrate is struck by infrared laser radiation after passing through said laser transparent coating.
Printing member comprising a metal cylinder having a coating transparent to infrared laser radiation said cylinder having been treated prior to coating such that said coating can be ablated from said substrate when the substrate is struck by infrared laser radiation after passing through said laser transparent coating.
Bifunctional printing surface for a printing plate comprising a surface and an ablatable coating thereon, said coating being transparent to infrared laser radiation, said surface having been treated prior to coating so as to be capable of absorbing infrared laser radiation to ablate said coating after said laser radiation passes through said coating and presenting a surface where said coating is ablated which participates in printing.
Printing plate comprising
Dependencies are inferred from the claim text.