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:
Jun. 18, 2019
Filed:
Mar. 07, 2017
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Takahisa Nakano, Kawasaki, JP;
Fumitoshi Morimoto, Shirakawa, JP;
Nobuki Nemoto, Kawasaki, JP;
Satoru Abe, Yokohama, JP;
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Abstract
A recording medium has a substrate and a first color developing layer, a heat insulating layer and a second color developing layer laminated on the substrate in this order. The first color developing layer develops a first color at a temperature not less than a first threshold value. The second color developing layer develops a second color that is different from the first color at a temperature not less than a second threshold value that is higher than the first threshold value. The heat insulating layer has a first heat insulating layer of a first heat conductivity and a second heat insulating layer of a second heat conductivity that is higher than the first heat conductivity, which are laminated in a second direction orthogonal to a first direction in which the first color developing layer, the heat insulating layer, and the second color developing layer are laminated on the substrate.