The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 28, 1993
Filed:
May. 24, 1991
Kazuhiko Sakata, Ibaraki, JP;
Warren T Smith, Sydney, AU;
Richard A Hann, Suffolk, GB;
Barry Pack, Suffolk, GB;
Imperial Chemical Industries PLC, London, GB;
Abstract
A dyesheet is provided for thermal transfer printing, comprising a base sheet having a dyecoat containing a thermal transfer dye layer on one surface, and on the other a croselinked heat resistant backcoat formulated to minimize dye migration from the dyecoat to the backcoat during storage. The backcoat comprises the reaction product of radically copolymerising in a layer of coating composition, a) at least one organic compound having a plurality of radically polymerisable unsaturated groups per molecule, and b) at least one organic compound having per molecule a single unsaturated group radically copolymerisable with constituent a, and having at least one alicyclic group per molecule. Preferred additional constituents include slip agents, especially a multivalent metal salt of a long chain alkyl or alkylphenyl phosphate ester.