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:
Jun. 05, 2007
Filed:
Apr. 20, 2006
Toshinori Sugiyama, Tsukuba, JP;
Kenjirou Kiyono, Tsukuba-gun, JP;
Toshinori Sugiyama, Tsukuba, JP;
Kenjirou Kiyono, Tsukuba-gun, JP;
Hitachi Maxell, Ltd., Osaka, JP;
Mitsubishi Kagaku Media Co., Ltd., Tokyo, JP;
Abstract
The object of the present invention is to provide a technology which has high compatibility and can provide users with conveniences. A new system recording mediumhas a center holeformed on a recording diskand a center holeformed on a center hub, so that the recording mediumcan respond to both an old system driving unit having a centering member coupling with the center holeand a new system driving unithaving a second centering membercoupling with the center hole. Moreover, the old system recording medium is a recording medium providing a recording disk having a center hole incorporated in a cartridge having a center hub, and has a structure where the center hole is coupled both with a first centering memberof the new system driving unitand with the centering member of the old system driving unit.