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:
Jan. 05, 1999
Filed:
Jan. 07, 1997
Applicant:
Inventors:
Yung T Chen, Lexington, MA (US);
Gerald P Harwood, Jr, Billerica, MA (US);
Michael S Viola, Burlington, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M / ;
U.S. Cl.
CPC ...
428520 ; 428195 ; 428520 ;
Abstract
An ink jet recording sheet comprises a support carrying an ink-receiving layer, this layer comprising a mixture of a derivatized (preferably acetoacetylated) poly(vinyl alcohol) and a non-derivatized poly(vinyl alcohol). The ink-receiving layer preferably also comprises a poly(vinylbenzyl quaternary ammonium salt) and poly(vinylpyrrolidone).