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:
Apr. 19, 1988
Filed:
Nov. 12, 1986
Applicant:
Inventor:
Tomoo Shibata, Irvine, CA (US);
Assignee:
Ricoh Electronics, Inc., Santa Ana, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B42D / ; B41M / ;
U.S. Cl.
CPC ...
283101 ; 428346 ; 428352 ; 428 40 ; 283 97 ;
Abstract
A thermosensitive label rendered unusable by removal from its first application includes a thermosensitive color-forming layer on one side of a substrate and a remoistenable adhesive on an opposite side of the substrate. The substrate is selected to have a tensile strength less than that necessary to separate the substrate from a surface after its first application thereto without ripping. The activation temperature of the thermosensitive color-forming layer is selected so that attempts to remove the label from its first application by means of heat, or steam, cause discoloration of the label.