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:
Nov. 09, 1993
Filed:
Jun. 15, 1990
Yoshihiko Hotta, Mishima, JP;
Toru Nogiwa, Numazu, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An information memory and display medium comprising: (a) a support, (b) a magnetic recording layer formed on the support, (c) a thermosensitive recording layer formed on the magnetic recording layer, which comprises (i) a light reflection layer formed on the magnetic recording layer, and (ii) a reversible thermosensitive recording layer formed on the light reflection layer, comprising a matrix resin, and one or more organic low-molecular-weight compounds dispersed in the matrix resin, with the transparency thereof being reversibly changeable between a transparent state and an opaque state depending upon the temperature thereof, thereby capable of yielding thermally erasable images. The thermosensitive recording layer may further comprise a smoothing layer between the magnetic recording layer and the light reflection layer, and/or an overcoat layer on the reversible thermosensitive recording layer.