Title:
ROTARY POLYGON MIRROR DRIVING DEVICE
Document Type and Number:
Japanese Patent JP2000321522
Kind Code:
A
Abstract:
To make rotary polygon mirror driving device used for a scan by a laser in a laser printer, etc., high in speed, high in precision (rotary variation jitter and mirror plane tilt), low in noise, and long in life by improving abrasive powder of a sleeve and deterioration of oil affecting an operation attitude and intermittent operation.
A dynamic pressure liquid bearing composed of a rotary shaft 1, a sleeve 2 having at least two herringbone grooves 2a, and oil 7 has the hardness of the peripheral surfaces of the herringbone grooves set 0.7 to 1 time as large as the hardness of the rotary shaft and also has the peripheral surfaces formed of electroless nickel plating layers.
Inventors:
FUJII SHIGEKI
MATSUMOTO TOSHIAKI
OHATA KOICHIRO
MATSUMOTO TOSHIAKI
OHATA KOICHIRO
Application Number:
JP13383199A
Publication Date:
November 24, 2000
Filing Date:
May 14, 1999
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
B41J2/44; F16C17/02; F16C33/12; G02B26/10; G02B26/12; (IPC1-7): G02B26/10; B41J2/44
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)
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