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:
Feb. 07, 2023
Filed:
Dec. 19, 2019
Pauline Bie, Wettolsheim, FR;
Daiki Iwata, Tokyo, JP;
Erkan Kocak, Wettolsheim, FR;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
In one aspect, the present invention relates to a thermosensitive recording medium comprising at least: —a support layer; —a thermosensitive colouring layer over the support layer, the thermosensitive colouring layer containing a leuco dye; and —a protective layer over the thermosensitive colouring layer; wherein the thermosensitive colouring layer comprises a developer having the general formula (I) below: wherein Rto Reach independently represent a hydrogen atom, a halogen atom, a C1-C6 alkyl group, a C1-C6 alkoxyl group, a C1-C6 fluoroalkyl group; characterized in that the protective layer comprises particles of wax with an average particle size of at least 0.05 μm and at most 2.0 μm. In further aspects, the present invention relates to a label for attachment to a product comprising the thermosensitive recording medium of the invention, and to a consumer product package to which a thermosensitive recording medium or a label of the invention has been attached.