JP2005266775A5 - - Google Patents

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Publication number
JP2005266775A5
JP2005266775A5 JP2005023508A JP2005023508A JP2005266775A5 JP 2005266775 A5 JP2005266775 A5 JP 2005266775A5 JP 2005023508 A JP2005023508 A JP 2005023508A JP 2005023508 A JP2005023508 A JP 2005023508A JP 2005266775 A5 JP2005266775 A5 JP 2005266775A5
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JP
Japan
Prior art keywords
mirror
axis
scanning device
optical scanning
light beam
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JP2005023508A
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Japanese (ja)
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JP4817668B2 (en
JP2005266775A (en
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Priority to JP2005023508A priority Critical patent/JP4817668B2/en
Priority claimed from JP2005023508A external-priority patent/JP4817668B2/en
Publication of JP2005266775A publication Critical patent/JP2005266775A/en
Publication of JP2005266775A5 publication Critical patent/JP2005266775A5/ja
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Publication of JP4817668B2 publication Critical patent/JP4817668B2/en
Expired - Fee Related legal-status Critical Current
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Claims (4)

光源手段と、前記光源手段から発光された光束を偏向する偏向手段と、前記偏向手段で偏向された光束を被走査面上にスポット状に結像させる結像光学系と、前記偏向手段と前記被走査面の間の光路に設けられた複数のミラーと、を有する光走査装置において、
前記複数のミラーは、第１のミラーと第２のミラーを有しており、
前記第１のミラーにて反射する光束の反射率は、９０％以下であり、かつ、前記第１のミラーにて反射する光束の反射率は、軸上から軸外に向い変化しており、
前記第２のミラーの軸上の反射率は、前記第１のミラーの軸上の反射率より高く、かつ、前記第１のミラーの軸上の反射率は、前記第１のミラーの軸外の反射率と等しいことを特徴とする光走査装置。 A light source means, a deflecting means for deflecting a light beam emitted from the light source means, an imaging optical system for focusing the light beam deflected by the deflecting means on a scanning surface in a spot shape, the deflecting means, and the In an optical scanning device having a plurality of mirrors provided in the optical path between the scanned surfaces,
The plurality of mirrors include a first mirror and a second mirror,
The reflectance of the light beam reflected by the first mirror is 90% or less, and the reflectance of the light beam reflected by the first mirror changes from on-axis to off-axis,
The reflectivity on the axis of the second mirror is higher than the reflectivity on the axis of the first mirror, and the reflectivity on the axis of the first mirror is off axis of the first mirror. An optical scanning device characterized by having a reflectance equal to that of the optical scanning device. 前記光源手段から発光された光束は、前記結像光学系を構成する走査レンズの入射面にＰ偏光入射しており、前記第１のミラーにて反射する光束の反射率が軸上から軸外に向い大きくなっている請求項１に記載の光走査装置。   The light beam emitted from the light source means is P-polarized light incident on the incident surface of the scanning lens constituting the imaging optical system, and the reflectivity of the light beam reflected by the first mirror is off-axis from on-axis. The optical scanning device according to claim 1, wherein the optical scanning device is large toward the surface. 請求項１又は２に記載の光走査装置と、前記被走査面に配置された感光体と、前記光走査装置で走査された光束によって前記感光体の上に形成された静電潜像をトナー像として現像する現像器と、前記現像されたトナー像を被転写材に転写する転写手段と、転写されたトナー像を被転写材に定着させる定着器とを備えた画像形成装置。   An electrostatic latent image formed on the photosensitive member by a light beam scanned by the optical scanning device according to claim 1 or 2, the photosensitive member disposed on the surface to be scanned, and the optical scanning device, and toner. An image forming apparatus comprising: a developing device that develops an image; a transfer unit that transfers the developed toner image onto a transfer material; and a fixing device that fixes the transferred toner image onto the transfer material. 請求項３に記載の光走査装置と、外部機器から入力したコードデータを画像信号に変換して前記光走査装置に入力せしめるプリンタコントローラとを備えた画像形成装置。   An image forming apparatus comprising: the optical scanning device according to claim 3; and a printer controller that converts code data input from an external device into an image signal and inputs the image signal to the optical scanning device.
JP2005023508A 2004-02-18 2005-01-31 Optical scanning device Expired - Fee Related JP4817668B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005023508A JP4817668B2 (en) 2004-02-18 2005-01-31 Optical scanning device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2004041483 2004-02-18
JP2004041483 2004-02-18
JP2005023508A JP4817668B2 (en) 2004-02-18 2005-01-31 Optical scanning device

Publications (3)

Publication Number Publication Date
JP2005266775A JP2005266775A (en) 2005-09-29
JP2005266775A5 true JP2005266775A5 (en) 2008-03-13
JP4817668B2 JP4817668B2 (en) 2011-11-16

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Family Applications (1)

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JP2005023508A Expired - Fee Related JP4817668B2 (en) 2004-02-18 2005-01-31 Optical scanning device

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JP (1) JP4817668B2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4847132B2 (en) * 2006-01-05 2011-12-28 キヤノン株式会社 Optical scanning device and image forming apparatus using the same
JP5207593B2 (en) * 2006-03-09 2013-06-12 キヤノン株式会社 Scanning optical apparatus, image forming apparatus, and scanning line adjustment method for scanning optical apparatus
JP2008003476A (en) * 2006-06-26 2008-01-10 Ricoh Co Ltd Image forming apparatus
JP5072613B2 (en) * 2008-01-18 2012-11-14 キヤノン株式会社 Optical scanning device and image forming apparatus using the same
JP5173567B2 (en) * 2008-05-08 2013-04-03 キヤノン株式会社 Scanning optical device and image forming apparatus using the same
JP5093075B2 (en) * 2008-12-02 2012-12-05 富士ゼロックス株式会社 Optical scanning apparatus and image forming apparatus
JP5573493B2 (en) * 2010-08-25 2014-08-20 株式会社リコー Optical scanning apparatus and image forming apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58194149A (en) * 1982-05-08 1983-11-12 Asahi Optical Co Ltd Information reader from optical recording carrier
JPH01232322A (en) * 1988-03-12 1989-09-18 Minolta Camera Co Ltd Turn-back mirror of laser beam scanning optical system
JP4323652B2 (en) * 1998-12-25 2009-09-02 キヤノン株式会社 Optical scanning device and image forming apparatus using the same
JP4355415B2 (en) * 1999-12-24 2009-11-04 キヤノン株式会社 Optical scanning device

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