Invention Grant
- Patent Title: Optical scanning apparatus and image forming apparatus
- Patent Title (中): 光学扫描装置和图像形成装置
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Application No.: US12687210Application Date: 2010-01-14
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Publication No.: US08320034B2Publication Date: 2012-11-27
- Inventor: Daisuke Ishida
- Applicant: Daisuke Ishida
- Applicant Address: JP
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2009-010896 20090121
- Main IPC: G02B26/08
- IPC: G02B26/08

Abstract:
An optical scanning apparatus that scans a light beam from a light source includes: a movable portion and a fixed portion. The movable portion includes: a rotating member, which is capable of rotating about a rotation axis being parallel with an optical axis of the light beam, has an open hole through which the light beam passes, and is provided with a first coil; and a mirror that is provided to the rotating member, electrically connected with the first coil, and reflects the light beam that passes through the open hole of the rotating member in a variable angle with respect to the optical axis of the light beam. The fixed portion includes: a magnetic member; and a second coil capable of supplying an electromagnetic field to the first coil. One of a part and a whole of the magnetic member is made of a magnetic material and the magnetic member serves as a magnetic core of the second coil.
Public/Granted literature
- US20100182667A1 OPTICAL SCANNING APPARATUS AND IMAGE FORMING APPARATUS Public/Granted day:2010-07-22
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