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. 30, 2018
Filed:
Nov. 07, 2014
Osaka Sealing Printing Co., Ltd., Osaka, JP;
Osaka Sealing Printing Co., LTD., Osaka, JP;
Abstract
[Problems] Provided is a thermal recording sheet in which both a thermal recording layer having developed color and a printed layer can be clearly recognized from the front surface side of the sheet. [Solution] A thermal recording sheet having a front surface and a back surface opposite the front surface includes: a substrate layer; a recording layer formed on the front surface side of the substrate layer and containing a color developing material that develops color by heating; a protective layer formed on the further front surface side of the recording layer; and a printed layer formed on the back surface side of the recording layer. In a state before the recording layer develops color, a portion containing the recording layer and the protective layer and formed on the front surface side to the printed layer is transparent.