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:
Jul. 15, 1986
Filed:
Sep. 16, 1985
David H Knapp, Westfield, MA (US);
Robert E Lafler, Charlton City, MA (US);
Westvaco Corporation, New York, NY (US);
Abstract
The present printing process provides a unique color tone print of muted contrast in two, sequentially operated, flexographic print stations. A suitable paper substrate base for the process is uncoated white paper of stationery or envelope grade. As the paper supply web is drawn through the first print station, the desired image or design is printed on the paper with a colorless solution of a polyol, such as glycerine, in a glycol ether solvent. The second print station simply lays a uniform color coating of compatible pigment or solvent dye based ink over the entire web surface. Shade or tone differences resulting from differences in ink absorption with respect to the glycerine solution image areas provide a distinctive printed product.