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:
Mar. 10, 2009
Filed:
Apr. 03, 2007
Jiro Minabe, Ashigarakami-gun, JP;
Tatsuya Maruyama, Ashigarakami-gun, JP;
Katsunori Kawano, Ashigarakami-gun, JP;
Shin Yasuda, Ashigarakami-gun, JP;
Jiro Minabe, Ashigarakami-gun, JP;
Tatsuya Maruyama, Ashigarakami-gun, JP;
Katsunori Kawano, Ashigarakami-gun, JP;
Shin Yasuda, Ashigarakami-gun, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
In the present invention, a photosensitive layer of an optical recording medium includes a photo-responsive high-molecular compound comprising a photo-responsive group (e.g., an azobenzene derivative) which is geometrically isomerized by light radiation, and a liquid crystal linear mesogen group (e.g., a biphenyl derivative), wherein the photo-responsive group and the linear mesogen group are respectively bonded as side chains. The invention provides an optical recording medium enabling large scale recording by making the photosensitive layer thick without impairing recording characteristics. The photo-responsive high-molecular compound preferably comprises an aromatic ring on a main chain. Further, the photo-responsive high-molecular compound preferably comprises a structural unit which is capable of forming a liquid-crystalline or crystalline polymer and a structural unit which is capable of forming an amorphous polymer.