Hydrophilic coating of salt-type phosphorus or sulfur polymer on aluminum support materials for offset printing plates and process for manufacture and use with light sensitive layer thereon
Patent 4427765 Issued on January 24, 1984. Estimated Expiration Date: 
June 23, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 23, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorsApplicationNo. 06/391131 filed on 06/23/1982US Classes:430/525, And another backing layer other than aluminum oxide148/250, Contains organic phosphorus or organic chromium compound427/388.1, Metal base427/409, Metal base430/159, Silicon, nitrogen, or sulfur compound containing subbing layer430/160, Polymer containing subbing layer430/166, Including additional layer430/167, Azide containing layer430/264, SILVER HALIDE COLLOID TANNING PROCESS, COMPOSITION, OR PRODUCT430/276.1, And another backing or protective layer other than aluminum oxide430/278.1, Aluminum430/302, Lithographic430/49, To produce printing surface430/526, Aluminum430/60Product having layer between radiation-conductive layer and base or supportExaminersPrimary: Bowers, Charles L. Jr.Attorney, Agent or FirmInternational ClassB41N 3/03 (20060101)Foreign Application Priority Data1981-07-06 DEAbstractThe plate-, foil- or strip-shape support materials for offset printing plates are based on chemically, mechanically and/or electromechanically roughened aluminum, or on one of its alloys. Optionally, the aluminum may also have an aluminum oxide layer produced by anodic oxidation. One of the two surfaces the support material has a hydrophilic coating of at least one salt-type hydrophilic organic polymer which is a complex-type product obtained by reacting (a) a water-soluble organic polymer having acid functional groups containing phosphorus or sulfur (for example, polyvinylphosphonic or polyvinylsulfonic acid) with (b) a salt of an at least divalent metal cation.In a process for manufacturing this support material, the complex-type reaction product, dissolved in an aqueous acid, is applied to at least one surface of the support material and the support material thus modified is dried. It is also possible, however, to produce the complex-type reaction product of the components (a) and (b) on the support material. The support material is used in the preparation of offset printing plates having a light-sensitive layer.Other References
Field of SearchSilicon, nitrogen, or sulfur compound containing subbing layerPolymer containing subbing layer Azide containing layer Lithographic To produce printing surface Product having layer between radiation-conductive layer and base or support SILVER HALIDE COLLOID TANNING PROCESS, COMPOSITION, OR PRODUCT And another backing layer other than aluminum oxide Aluminum |
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