G - Physics – 03 – C
Patent
G - Physics
03
C
G03C 1/91 (2006.01) G03C 1/30 (2006.01)
Patent
CA 2193040
The present invention comprises a polyester film support in which the surface has been subjected to an energetic treatment to produce carboxyl groups on the polyester surface. The treated surface is then coated with a dilute solution of carboxyl reactive hardener and solvent (e.g., water) or a blend of carboxyl reactive hardener and gelatin and solvent (e.g., water). After drying the hardener or hardener/gelatin coated support, a photographic emulsion is coated on the surface. The resulting film element has excellent adhesion of the photographic emulsion after photoprocessing. Furthermore, the support coated with hardener/gelatin blend is safer to coat and handle than previously known methodsinvolving grafting of hardener directly to the support.
a présente invention comprend un support de pellicule en polyester dont la surface a été soumise à un traitement énergique de manière à produire des groupements carboxyle en surface du polyester. La surface traitée est ensuite enduite d'un durcisseur réagissant avec le carboxyle et d'un solvant (p. ex., l'eau), en solution diluée ou d'un mélange du durcisseur, de gélatine et de solvant (p. ex., l'eau). Après séchage du durcisseur ou du support enduit de gélatine et du durcisseur, la surface d'une émulsion photographique est enduite. L'émulsion photographique de l'élément obtenu a une excellente adhésion après phototraitement. De plus, le support enduit du mélange durcisseur/gélatine est moins dangereux d'application et de manutention que les méthodes antérieures où il fallait greffer le durcisseur directement sur le support.
Castle Richard A.
Chen Janglin
Gerenser Louis J.
Grace Jeremy M.
Riecke Edgar E.
Eastman Kodak Company
Gowling Lafleur Henderson Llp
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