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:
Dec. 05, 2000
Filed:
Dec. 20, 1999
Masaki Sakamoto, Iwate-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
The present invention has an object to provide a information recording medium and an information recording method which permit confirmation of the same photo-portrait image as a photo-portrait image made with coloring ink by irradiating ultraviolet rays or infrared rays although the image cannot be confirmed within the visible region because the image is colorless and transparent within this region. The same photo-portrait image as the photo-portrait image is recorded with ultraviolet ink or infrared ink which emits fluorescence by irradiating ultraviolet rays or infrared rays on a portion other than the recording portion of the photo-portrait image made with the coloring ink on the surface of a substrate.