Low optical dot gain pre-press proofs wherein the first down adhesive layer thickness is at least twice that of any additional thin adhesive layer
AssigneeMinnesota Mining and Manufacturing Company
InventorsCharles J. Gifford, Jack E. Cook, Bruce W. Weeks, Julien M. Wajs
Life of this patent
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Abstract
An at least two-color low optical dot gain surlay pre-press color proof comprising a base having laminated thereto in the following order, a first adhesive layer, a first single-color image, and then at least one additional pair of thin adhesive layers and comprising a synthetic polymeric binder composition with a Tg of less than 105.degree. and a thickness of 8-30 microns which thickness is at least twice that of any one of said additional thin adhesive layers.
Claims21
An at least two-color low optical dot gain surlay pre-press color proof comprising a base having laminated thereto in the following order, a first adhesive layer, a first single-color image, and then at least on additional pair of thin adhesive layers and different single-color images, said first adhesive layer comprising a synthetic polymeric binder composition with a Tg of less than 105.degree. C. and a thickness of 8-30 microns which thickness is at least twice that of any one of said additional thin adhesive layers.
A photosensitive color pre-press proofing element comprising at least two layers:
- a) a photosensitive layer and an associated colorant, and
- b) on one side of said element, a thermal adhesive layer or pressure-sensitive adhesive layer comprising a polymer composition and a white particulate pigment present in the adhesive layer in an amount of at least 20% by weight of the total weight of said adhesive layer, said adhesive layer absorbing radiation to which said photosensitive layer is photosensitive.
An at least two-color surlay pre-press color proof comprising a base having adhered thereto in the following order, a first adhesive layer, a first single-color image, and then at least one pair of adhesive layer and different single color image, said first adhesive layer comprising a polymeric binder and a white particulate pigment, said pigment being present in the adhesive layer in an amount of at lest 20% by weight of the total weight of said adhesive layer, the first adhesive layer being at least twice as thick as any of the other adhesive layers in any of said at least one pair of adhesive layer and different single color image.
Dependencies are inferred from the claim text.