DISK RECORDING MEDIUM

PROBLEM TO BE SOLVED: To improve positioning accuracy and reduce the thickness of a disk. SOLUTION: A magnetic adsorption plate 3 made of a magnetic metal thin plate is used, and a rotary shaft on a disk rotary-driving device side is inserted into a rotary shaft insertion hole 5 thereof. The rotary...

Full description

Saved in:
Bibliographic Details
Main Author TSUKAHARA NOBUHIKO
Format Patent
LanguageEnglish
Published 19.08.2010
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
Online AccessGet full text

Cover

More Information
Summary:PROBLEM TO BE SOLVED: To improve positioning accuracy and reduce the thickness of a disk. SOLUTION: A magnetic adsorption plate 3 made of a magnetic metal thin plate is used, and a rotary shaft on a disk rotary-driving device side is inserted into a rotary shaft insertion hole 5 thereof. The rotary shaft insertion hole has a part (rotary shaft abutting part) having two or more non-parallel straight lines. The rotary shaft inserted into the rotary shaft insertion hole is pressed by a shaft pressing part 2 in a pressing direction to the rotary shaft abutting part in the rotary shaft insertion hole. The shaft pressing part has a thickness equal to or less than that of a disk body 1, and is disposed in the center hole of the disk body in a state of being attached to the magnetic adsorption plate so as not to protrude from a center hole. Thus, the thickness necessary for the shaft pressing part does not affect an increase in overall thickness of the disk. COPYRIGHT: (C)2010,JPO&INPIT
Bibliography:Application Number: JP20090023973