Back to results
US 5,708,520 AGranted
Rotating polygon mirror driving apparatus
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsTakao Yoshitsugu, Koichiro Ohata, Tsuyoshi Kano
Life of this patent
Estimating the term…
Abstract
A rotating polygon mirror driving apparatus has a rotor having a rotating polygon mirror fixed thereto, a rotational shaft and a rotor magnet; a bracket having a base plate provided opposite to the rotor magnet and a collar forming a bearing holding portion of a resin outserted to the base plate and made; and a bearing fitted to the bracket so as to support the rotational shaft. The driving apparatus can be decreased in cost and thickness while maintaining excellent rotational precision and mechanical precision.
Claims5
A rotating polygon mirror driving apparatus comprising:
- a rotor having a rotating polygon mirror fixed thereto, a rotational shaft and a rotor magnet;
- a bracket comprising (i) a base plate provided opposite to said rotor magnet, (ii) a cylindrical collar as a bearing holding portion, said cylindrical collar including a first portion comprising a resin material and having a cylindrical axis, and (iii) an apparatus mounting portion extending in a direction at right angles to the cylindrical axis of said collar, said mounting portion having a second portion comprising said resin material, said collar and said mounting portion being formed on said base plate by an outsert of said resin material;
- and
- a bearing comprising a bearing sleeve and fitted to said collar so as to rotatably support said rotational shaft.
1 more element
Dependencies are inferred from the claim text.