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:
Jun. 20, 1995
Filed:
Oct. 27, 1993
John A Pope, Essex, GB;
Richard A Hann, Suffolk, GB;
Imperial Chemical Industries, PLC, London, GB;
Abstract
A receiver sheet for thermal transfer printing comprises a sheet-like substrate supporting a backcoat comprising a cross-linked organic polymer which is a reaction product of a polyalkylene glycol and a polyfunctional organic cross-linking agent reactive with the terminal hydroxyl groups of the polyalkylene glycol. This provides a surface which may be written on using aqueous inks, and to which water-activated adhesives may adhere. Suitable cross-linking agents are hexamethoxymethylmelamines or oligomers thereof. The backcoat is free from alkali metal salts to avoid retransfer problems, and may also be textured by particulate material embedded in the cross-linked polymer, to improve handling properties.