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. 03, 2015
Filed:
Feb. 09, 2012
Fuyuki Miyazawa, Tokyo, JP;
Wakaaki Murai, Tokyo, JP;
Fuyuki Miyazawa, Tokyo, JP;
Wakaaki Murai, Tokyo, JP;
Taiyo Yuden Co., Ltd., Tokyo, JP;
Abstract
An optical recording medium is provided having a recording layer that absorbs light with a wavelength of 350 nm to 500 nm, the optical recording medium having good recording playback properties even when the ambient temperature changes, and allowing playback distortion to be controlled even when stored in a high temperature environment. A write-once type optical recording medium including: a substrate; a reflective layer that reflects light with a wavelength of 350 nm to 500 nm on the substrate; a recording layer that absorbs light with a wavelength of 350 nm to 500 nm; and a light transmission layer with a single-layer construction that transmits light with a wavelength of 350 nm to 500 nm, the light transmission layer having a modulus of elasticity at 75° C. that ranges from 50 MPa to less than 170 MPa.