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. 17, 1987
Filed:
Oct. 25, 1985
Applicant:
Inventor:
Masaakira Umehara, Yokohama, JP;
Assignee:
Ricoh Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430271 ; 430945 ; 430917 ; 430918 ; 522 27 ; 522 26 ; 522 24 ; 522 10 ; 522 14 ; 522 16 ; 522 20 ; 522 21 ; 346 / ; 3461351 ; 369283 ; 369284 ; 369 94 ; 428 64 ; 428 25 ; 264 22 ;
Abstract
This invention relates to an optical information recording medium comprising a substrate provided at least with an underlayer and a recording layer thereon, said underlayer being prepared by curing a light-curable composition containing a reducing agent, a photo-polymerization initiator and acrylate monomer and/or methacrylate monomer and/or their corresponding oligomer.