Printing – Planographic – Lithographic printing plates
Patent
1997-09-12
1999-11-30
Funk, Stephen R.
Printing
Planographic
Lithographic printing plates
1014631, B41C 110
Patent
active
059923229
ABSTRACT:
A substrate is coated with a first material which is soluble in a first solvent, whereupon a second material which is strongly adherent to the first material and insoluble in the first solvent is selectively applied by an ink jet printer. The substrate is then developed in the first solvent to establish the image. In a preferred embodiment the substrate is hydrophilic, the first material is a negative working photosensitive material, and the second material is a transparent adhesive, which permits curing the first material by exposure to actinic light after the development step. The adhesive is then removed. In an embodiment directed to a waterless plate the substrate includes a surface coating of silicone, and the first material is a primer which promotes adhesion of a second material in the form of an oleophilic adhesive which is selectively applied. The primer is then developed to expose the silicone on the non-image areas. The ink carrying image areas are formed by the adhesive, which in this embodiment is not removed.
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Fromson Howard A.
Gracia Robert F.
Rubin Steven A.
Fromson Howard A.
Funk Stephen R.
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