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:
Dec. 20, 1977
Filed:
Nov. 12, 1975
Applicant:
Inventor:
Bruce W Weeks, Lake Elmo, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
D06P / ;
U.S. Cl.
CPC ...
8 2 / ; 101470 ; 156241 ; 4272 / ;
Abstract
A method for imprinting permanent indicia on backsized pressure-sensitive adhesive tapes comprising contacting the tape with a heat-sublimable dye source material in conjunction with a stencil or raised relief-imaged heat-conductive platen, and raising the temperature to a point sufficient to vaporize the dye, whereupon at least a portion of the dye penetrates through the backsizing to become absorbed in the flexible tape backing. In this manner, the image contained on the tape is permanent, smudge-proof and abrasion-resistant.