Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1976-08-03
1978-10-31
Drummond, Douglas J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
101170, 427 56, 428327, 428408, 428488, 428913, 428914, G03C 516, B41B 1300
Patent
active
041235789
ABSTRACT:
A composite strip material for forming graphics such as letters, numbers, symbols or pictures. The strip includes an accepting tape comprising a layer of latent adhesive material in face-to-face contact with a layer of microgranules lightly adhered to a donor web. At least one of the layers bears a radiation absorbing pigment which, when selectively heated in accordance with a pattern of radiation, momentarily softens adjacent portions of the adhesive material. Upon separation of the accepting tape and donor web, microgranules transfer to the accepting tape only in irradiated areas.
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Perrington Kenneth J.
Taylor Phillip A.
Vogelgesang Peter J.
Alexander Cruzan
Ball Michael W.
Drummond Douglas J.
Huebsch William L.
Minnesota Mining and Manufacturing Company
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