JPS63303316A - Rotary polyhedral mirror - Google Patents
Rotary polyhedral mirrorInfo
- Publication number
- JPS63303316A JPS63303316A JP13929087A JP13929087A JPS63303316A JP S63303316 A JPS63303316 A JP S63303316A JP 13929087 A JP13929087 A JP 13929087A JP 13929087 A JP13929087 A JP 13929087A JP S63303316 A JPS63303316 A JP S63303316A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- mirror
- polygon mirror
- positioning
- accuracy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 5
- 239000011347 resin Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- -1 acryl Chemical group 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009750 centrifugal casting Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/09—Multifaceted or polygonal mirrors, e.g. polygonal scanning mirrors; Fresnel mirrors
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はレーザー光束を走査するのに用いる回転多面鏡
に関する。さらに詳しくは樹脂成形体からなる多面鏡を
モータの回転子に係合するための構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rotating polygon mirror used for scanning a laser beam. More specifically, the present invention relates to a structure for engaging a polygon mirror made of a resin molded body with a rotor of a motor.
従来の回転多面鏡の多面鏡部は、第５図にその斜視図を
示すが、Ａρ金合金超精密切削により、加工された反射
面１１を外周に有する多角柱に、中心にモーターの回転
子へ係合するための貫通孔１２を精密に加工した構造よ
りなっていた。しかしこの様な多面鏡は、加工に時間が
かかり、加工装置も高価で安価なものが得られず、レー
ザービームプリンタのヘッド部分のコスト高の大きな一
因となっていた。一方、この問題を解決すべく、安価で
量産性に豊んだげ１転多面鏡を得るために、多面鏡部分
の樹脂成形体化の研究が鋭意行なわれてきた。The polygonal mirror part of a conventional rotating polygon mirror, whose perspective view is shown in FIG. It had a structure in which a through hole 12 for engaging with was precisely machined. However, such a polygon mirror takes time to process, and the processing equipment is expensive, making it difficult to obtain a cheap one, which is a major contributing factor to the high cost of the head portion of a laser beam printer. On the other hand, in order to solve this problem and obtain a one-turn polygon mirror that is inexpensive and easy to mass-produce, research has been carried out on making the polygon mirror part into a resin molded body.
例えば、特開昭５７−２９００４記載の如く高剛性の樹
脂基体の外周部に平滑性樹脂で反射面を２色成形するも
の。特公昭６１−２２２８３記載の遠心キャスティング
によるもの等が公知である〔発明が解決しようとする問
題点〕
しかし上述の従来例は主に反射表面と外形々状を精密に
成形する事を主ｌＪ的としたもので、モーターとの係合
については、従来の金属性多面鏡と同様の方法を前提と
しており、そのため、中心部分の貫通孔にっては、内径
管理及び垂直度、偏心等従来と全く同じ精度と手段が必
要であった。For example, as described in Japanese Patent Application Laid-Open No. 57-29004, a reflective surface is molded in two colors from smooth resin on the outer periphery of a highly rigid resin base. The method using centrifugal casting described in Japanese Patent Publication No. 61-22283 is well known. [Problem to be solved by the invention] However, the above-mentioned conventional example mainly focuses on precisely forming the reflective surface and external shape. The engagement with the motor is based on the same method as conventional metallic polygon mirrors, so the through hole in the center has to be carefully controlled in terms of internal diameter, perpendicularity, eccentricity, etc. Exactly the same precision and means were required.
本発明の目的は、かかる従来技術の欠点を解決し、樹脂
成形多面体をモーターの回転子に、簡便な加工で、容易
に精度よく係合可能な構造を付与する事により、安価で
量産性に豊んだ回転多面鏡を提供する点にある。The purpose of the present invention is to solve the drawbacks of the prior art and provide a structure that allows a resin-molded polyhedron to be easily engaged with the rotor of a motor through simple processing, thereby achieving mass production at low cost. The point is to provide a rich rotating polygon mirror.
本発明の特徴は、外周部に複数の光学反射面を有する樹
脂製多面鏡の底面に、複数の位置出し用凸部を固定用係
合部とはＥｌｌに形成し、回転子の上部に設けた四部と
の組合せにより位出し固定した点である。A feature of the present invention is that a plurality of positioning convex portions are formed on the bottom surface of a resin polygon mirror having a plurality of optical reflection surfaces on the outer periphery, and are provided on the upper part of the rotor. This is a point whose position is fixed by combining the four parts.
本発明の上記の構成によれば、固定接着を必要とする保
合部の形状精度は非常に低いものでよく、又、位出し用
凸部は容積が小さく離型も容易であり、中心からの外接
又は内接半径のみ高精度に転写できれは回転子との中心
合せが高精度にできるものである。According to the above configuration of the present invention, the shape precision of the retaining part that requires fixed adhesion may be very low, and the positioning convex part has a small volume and is easy to release from the mold, and If only the circumscribed or inscribed radius of the rotor can be transferred with high precision, the center alignment with the rotor can be performed with high precision.
以下実施例に基づき本発明を説明する。 The present invention will be explained below based on Examples.
〔実施例１〕
第１図は本発明の一実施例に基づく回転多面鏡の構成図
を示す。又、第２図は多面鏡部分の底面の斜視図。第３
図は回転子の上面の斜視図を各々示す。[Embodiment 1] FIG. 1 shows a configuration diagram of a rotating polygon mirror based on an embodiment of the present invention. FIG. 2 is a perspective view of the bottom of the polygon mirror. Third
The figures each show a perspective view of the top surface of the rotor.
多面鏡は１外接円半径２０ｍ／ｍ、厚さ６ｍ／ｍのアク
リル製で反射面２には、ＡＱ及びＳ：０２のコーティン
グが施されている。多面鏡の底面には、位置出し用凸部
３が同じ円状に３ケ中・ｂからの位置精度、及び半径精
度が＋１０ｇ以内に形成され、又、中心部には固定用の
円筒状凸部４が外径精度５ｍ／ｍ＋１００用で形成され
ている。The polygon mirror is made of acrylic and has a circumscribed circle radius of 20 m/m and a thickness of 6 m/m, and the reflecting surface 2 is coated with AQ and S:02. On the bottom surface of the polygon mirror, a positioning convex part 3 is formed in the same circular shape with a positional accuracy from 3 out of 3 b and a radius accuracy of within +10g, and a cylindrical convex part for fixing is formed in the center. The portion 4 is formed with an outer diameter accuracy of 5 m/m+100.
Ａｆｆ合金製のモータ回転子５上面に、上記位置出し凸
部に対応した同心円状の７Ｒ６と、固定用の凸部に対応
した円筒上四部７が形成され、多面鏡と回転子とは、Ｕ
Ｖ硬化接着剤８により接着固定される。On the upper surface of the motor rotor 5 made of Aff alloy, a concentric circle 7R6 corresponding to the positioning convex portion and a cylindrical upper four portion 7 corresponding to the fixing convex portion are formed, and the polygon mirror and the rotor are formed by U.
It is adhesively fixed with a V-curing adhesive 8.
多面鏡の成形は、あらかじめ上記係合部の凸部の送パタ
ーンを有する金型を用いて、圧縮成形で行った。成形法
については、その他のキャスティング、射出成形等、金
型を用い転写する方法であれば、どの方法を用いても本
構造が有効である事は明らかである。The polygon mirror was molded by compression molding using a mold having a feeding pattern for the convex portion of the engaging portion in advance. As for the molding method, it is clear that the present structure is effective no matter what method is used, such as casting, injection molding, etc., as long as it uses a mold for transfer.
これにより、固定用の円筒部の外周部を全面に渡って高
精度に形成せずとも、容積の小さい、位置出し用凸部の
みを精度よく転写すればよく、歩留才りが飛躍的に向上
した。This makes it possible to transfer only the positioning convex part, which has a small volume, with high precision, without having to form the entire outer periphery of the fixing cylindrical part with high precision, dramatically increasing the yield. Improved.
〔実施例２〕
ｆ５４図は本発明に基づく別の実施例に基づく回転多面
鏡の構成断面図を示す。[Embodiment 2] Figure f54 shows a sectional view of a rotating polygon mirror according to another embodiment of the present invention.
多面鏡１の中心に半径１０ ｍ ／ ｍの固定用貫通孔
が形成され同じく底面に位置出し用の凸部３が２ケ所形
成されている。回転子５は上記多面鏡の貫通孔に押入さ
れる凸部９と、上記多面鏡の位置出し用凸部に対応した
同じ円状のｆ４１０が形成されており、精密に係合され
た状態で、上記貫通孔部で嫌気性接着剤等により固定さ
れてなる。A fixing through hole with a radius of 10 m/m is formed at the center of the polygon mirror 1, and two positioning protrusions 3 are formed at the bottom. The rotor 5 is formed with a convex portion 9 that is pushed into the through hole of the polygon mirror, and a circular f410 that corresponds to the positioning convex portion of the polygon mirror, and when they are precisely engaged. , and is fixed in the through-hole portion with an anaerobic adhesive or the like.
多面鏡の形状、大きさ、材質、固定方法等は、上記実施
例に限足されるものでない基又、反射面が平面及び非平
面に対しても本発明が有効である４ｆは自明である。The shape, size, material, fixing method, etc. of the polygon mirror are not limited to the above embodiments, and it is obvious that the present invention is effective even when the reflecting surface is flat or non-flat. .
以上述べた如く、本発明によれば、外周部に複数の光学
的反射面を有する樹脂性多面鏡の底面に、複数の位置出
し用凸部を固定用係合部と別に形成し、回転子の上部に
設けた四部との組み合ゼにより位置出し固定する事によ
り、軽く、安価で量産性に豊み、組立ても容易な、樹脂
成形体の多面鏡を用いた回転多面鏡の製造方法を可能と
し、それにより、低価格なレーザービームプリンターか
ら、レーザー光束の走査を用いた小型の光計測器をはじ
め、様々な分野への利用を促進する効果を有する。As described above, according to the present invention, a plurality of positioning convex portions are formed separately from a fixing engagement portion on the bottom surface of a resin polygon mirror having a plurality of optical reflection surfaces on the outer periphery. A method for manufacturing a rotating polygon mirror using a resin molded polygon mirror, which is lightweight, inexpensive, highly suitable for mass production, and easy to assemble by positioning and fixing it by combining with the four parts provided on the top of the mirror. This has the effect of promoting its use in a variety of fields, from low-cost laser beam printers to small optical measuring instruments that use scanning laser beams.
第１図は本発明の一実施例に於ける構成断面図。第２図
は本発明の一実施例に於ける多面鏡の底部斜視図。第３
図は本発明の一実施例に於ける回転子の上部斜視図。第
４図は本発明の他の実施例に於ける構成断面図。第５図
は従来の回転多面鏡の斜視図。
１・・・樹脂製の多面鏡 ２・・・反射面３・・・
位置出し川西＠ ４・・・円筒状凸部５・・・回転
子 ６・・・位置出し用溝７・・・円筒状
凹部 ８・・・接着剤９・・・貫通用四部
１ｏ・・・接着剤１１・・・反射面 １
２・・・貫通孔以上
出願人 セイコーエプソン株式会社
第２図
第３図FIG. 1 is a cross-sectional view of the configuration of an embodiment of the present invention. FIG. 2 is a bottom perspective view of a polygon mirror in one embodiment of the present invention. Third
The figure is a top perspective view of a rotor in one embodiment of the present invention. FIG. 4 is a cross-sectional view of another embodiment of the present invention. FIG. 5 is a perspective view of a conventional rotating polygon mirror. 1... Resin polygon mirror 2... Reflective surface 3...
Positioning Kawanishi @ 4... Cylindrical convex portion 5... Rotor 6... Positioning groove 7... Cylindrical recess 8... Adhesive 9... Four parts for penetration
1o... Adhesive 11... Reflective surface 1
2...Through hole or above Applicant Seiko Epson Corporation Figure 2 Figure 3
Claims (1)
に複数の位置出し用凸部を、固定用係合部と別に形成し
、回転子の上部に設けた凹部との組合せにより位置出し
固定する事を特徴とする回転多面鏡。A plurality of positioning convex parts are formed on the bottom surface of a resin polygon mirror that has a plurality of optical reflective surfaces on the outer periphery, separately from the fixing engagement part, and in combination with the concave part provided on the top of the rotor, positioning is performed. A rotating polygon mirror that is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13929087A JPS63303316A (en) | 1987-06-03 | 1987-06-03 | Rotary polyhedral mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13929087A JPS63303316A (en) | 1987-06-03 | 1987-06-03 | Rotary polyhedral mirror |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63303316A true JPS63303316A (en) | 1988-12-09 |
Family
ID=15241839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13929087A Pending JPS63303316A (en) | 1987-06-03 | 1987-06-03 | Rotary polyhedral mirror |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63303316A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5359460A (en) * | 1992-02-18 | 1994-10-25 | Sharp Kabushiki Kaisha | Polygon mirror for a laser scanning optical system |
| KR20030025344A (en) * | 2001-09-20 | 2003-03-29 | 삼성전자주식회사 | a scanner motor having a slip prevention apparatus for polygon mirror |
| JP2012037888A (en) * | 2010-08-06 | 2012-02-23 | Samsung Electro-Mechanics Co Ltd | Scanner motor |
| EP2458414A1 (en) * | 2010-11-24 | 2012-05-30 | Samsung Electronics Co., Ltd. | Polygon mirror assembly, light scanning unit employing polygon mirror assembly, and image forming apparatus |
| US9778457B2 (en) | 2014-02-12 | 2017-10-03 | Brother Kogyo Kabushiki Kaisha | Light deflector and polygon mirror |
-
1987
- 1987-06-03 JP JP13929087A patent/JPS63303316A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5359460A (en) * | 1992-02-18 | 1994-10-25 | Sharp Kabushiki Kaisha | Polygon mirror for a laser scanning optical system |
| KR20030025344A (en) * | 2001-09-20 | 2003-03-29 | 삼성전자주식회사 | a scanner motor having a slip prevention apparatus for polygon mirror |
| JP2012037888A (en) * | 2010-08-06 | 2012-02-23 | Samsung Electro-Mechanics Co Ltd | Scanner motor |
| CN102377281A (en) * | 2010-08-06 | 2012-03-14 | 三星电机株式会社 | Scanner motor |
| EP2458414A1 (en) * | 2010-11-24 | 2012-05-30 | Samsung Electronics Co., Ltd. | Polygon mirror assembly, light scanning unit employing polygon mirror assembly, and image forming apparatus |
| JP2012113307A (en) * | 2010-11-24 | 2012-06-14 | Samsung Electronics Co Ltd | Polygon mirror assembly and optical scanner and image forming apparatus using the same |
| US8848014B2 (en) | 2010-11-24 | 2014-09-30 | Samsung Electronics Co., Ltd. | Polygon mirror assembly, light scanning unit employing polygon mirror assembly, and image forming apparatus |
| US9075339B2 (en) | 2010-11-24 | 2015-07-07 | Samsung Electronics Co., Ltd. | Polygon mirror assembly, light scanning unit employing polygon mirror assembly, and image forming apparatus |
| US9778457B2 (en) | 2014-02-12 | 2017-10-03 | Brother Kogyo Kabushiki Kaisha | Light deflector and polygon mirror |
| US10451869B2 (en) | 2014-02-12 | 2019-10-22 | Brother Kogyo Kabushiki Kaisha | Light deflector and polygon mirror |
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