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. 20, 1987
Filed:
Jul. 29, 1985
Kiyotaka Iiyama, Mishima, JP;
Norihiko Inaba, Numazu, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A two-color thermosensitive recording label capable of forming two different colors when heated at different temperatures is disclosed, which comprises: (a) a support material and the following layers successively formed thereon, (b) a first thermosensitive coloring layer which is colored in a first color at a predetermined high temperature T, formed on one side of the support material, (c) a decolorizing layer containing a decolorizing agent, (d) an intermediate layer, (e) a second thermosensitive coloring layer, which is colored in a second color at a predetermined low temperature, the second color being decolorized by the decolorizing agent when heated to a predetermined temperature, so that the color developed in the second thermosensitive coloring layer is prevented from being mixed with the color developed in the first thermosensitive coloring layer, and the second thermosensitive coloring layer and the second color are protected from the decolorizing layer by the intermediate layer so long as the second thermosensitive coloring layer is not heated up to the predetermined temperature, (f) a protective layer for protecting the second thermosensitive coloring layer, (g) an adhesive layer formed on the other side of the support, and (h) a disposable backing sheet which is attached to the adhesive layer.