JPH07119898B2 - Motor for optical scanning - Google Patents
Motor for optical scanningInfo
- Publication number
- JPH07119898B2 JPH07119898B2 JP19224386A JP19224386A JPH07119898B2 JP H07119898 B2 JPH07119898 B2 JP H07119898B2 JP 19224386 A JP19224386 A JP 19224386A JP 19224386 A JP19224386 A JP 19224386A JP H07119898 B2 JPH07119898 B2 JP H07119898B2
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- motor
- polygon mirror
- pedestal member
- optical scanner
- 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.)
- Expired - Fee Related
Links
- 230000003287 optical effect Effects 0.000 title claims description 15
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000004033 plastic Substances 0.000 claims description 16
- 229920003023 plastic Polymers 0.000 claims description 16
- 239000010408 film Substances 0.000 claims description 15
- 238000000465 moulding Methods 0.000 claims description 14
- 239000010409 thin film Substances 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 239000000919 ceramic Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 description 6
- 239000002985 plastic film Substances 0.000 description 6
- 229920006255 plastic film Polymers 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 238000005498 polishing Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Permanent Magnet Type Synchronous Machine (AREA)
- Mechanical Optical Scanning Systems (AREA)
Description
【発明の詳細な説明】 ＜発明の技術分野＞ 本発明は、レーザー光等を走査するためのポリゴンミラ
ーを一体に組み付けた光スキャナ用モータ、更に詳しく
は、ミラー精度の許容範囲が比較的大きい低廉型の光ス
キャナ用モータに関する。Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a motor for an optical scanner in which a polygon mirror for scanning a laser beam or the like is integrally assembled, and more specifically, a permissible range of mirror accuracy is relatively large. The present invention relates to a low-cost optical scanner motor.
＜発明の背景＞ レーザープリンタ、レーザービーム走査式変位測定機
等、ポリゴンミラーの回転によってレーザー光を走査す
るようにした機器は近時増加の一途を辿っており、ポリ
ゴンミラーを回転・駆動するための光スキャナ用モータ
の普及は著しい。<Background of the Invention> Devices such as laser printers and laser beam scanning displacement measuring machines that scan laser light by rotating a polygon mirror have been increasing in number in recent years, in order to rotate and drive the polygon mirror. The spread of motors for optical scanners is remarkable.
ところで、光スキャナ用モータを用いる斯る機器はその
用途によって、モータの回転数が比較的小さく（例えば
役10,000rpm以下）且つミラー精度の許容範囲も比較的
大きいが、コストダウンを計るため低価格の光スキャナ
用モータを要求する場合がある。また、用途によっては
各面のミラー角度が異なるポリゴンミラーをもつ光スキ
ャナ用モータが求められることもある。By the way, depending on the application, such a device using a motor for an optical scanner has a relatively low motor rotation speed (for example, 10,000 rpm or less) and a relatively large mirror accuracy tolerance range, but is low cost because of cost reduction. There is a case that the motor for the optical scanner is required. Further, depending on the application, there is a demand for a motor for an optical scanner having a polygon mirror in which the mirror angle of each surface is different.
＜従来技術およびその問題点＞ 光スキャナモータの回転子に固着されるポリゴンミラー
は、一般的に、Al等の金属材料を切削によって偏平多面
体に形成し、表面を鏡面仕上げしたものが用いられる。
そして、このように金属材料から切削・研磨によって形
成されたポリゴンミラーは、その中心穴部分を、回転子
のロータシャフト等に固着されるようになっており、ミ
ラー面の仕上げ精度・ロータシャフトへの取り付け位置
精度が良好であれば、ミラー精度は良好なものとなる。
また、ミラー全体が金属材料で出来ているため、高速回
転時の機械的・熱的変形に対する信頼性も高い。<Prior Art and Its Problems> As the polygon mirror fixed to the rotor of the optical scanner motor, generally used is a flat polyhedron which is formed by cutting a metal material such as Al and has a mirror-finished surface.
The polygon mirror formed by cutting and polishing the metal material in this way has its center hole fixed to the rotor shaft of the rotor, etc. If the mounting position accuracy of is good, the mirror accuracy will be good.
Moreover, since the entire mirror is made of a metallic material, it has high reliability against mechanical and thermal deformation during high-speed rotation.
しかしながら、上述のようにポリゴンミラーを金属材料
から切削・研磨で形成すると、ミラーの加工が面倒で生
産性が悪く、コストダウンの障害となる上、ミラー全体
の重量がかさんだ。また、ポリゴンミラーの各面のミラ
ー角度（回転軸心と平行な線分に対するミラー面の傾き
角度）が異なると、著しく加工作業性が劣化するもので
あった。However, when the polygon mirror is formed by cutting and polishing from a metal material as described above, the processing of the mirror is cumbersome, productivity is poor, cost is hindered, and the weight of the entire mirror is heavy. Further, if the mirror angle of each surface of the polygon mirror (angle of inclination of the mirror surface with respect to a line segment parallel to the axis of rotation) is different, the workability is significantly deteriorated.
一方、加工性を向上させると共に、コストダウンとミラ
ー重量の軽減とをはかるために、ポリゴンミラー全体の
プラスチックスで成型し、多角周面にAl等の金属膜を薄
膜技術で形成することも一部で試みられている。このよ
うにプラスチックスでミラーを形成すると、ミラー精度
は若干落ちるが、各面のミラー角度が異なっても容易に
生産性良くこれに対処出来る。On the other hand, in order to improve the workability and reduce the cost and the weight of the mirror, it is also possible to mold the entire polygon mirror with plastics and form a metal film such as Al on the polygonal peripheral surface by the thin film technology. Is being tried by the department. When the mirror is formed of plastics as described above, the mirror accuracy is slightly lowered, but even if the mirror angle of each surface is different, this can be easily dealt with with good productivity.
しかしながら、ポリゴンミラー全体をプラスチックスで
形成すると、機械的・熱的変形に対する信頼性が乏し
く、経時使用・過酷条件使用において信頼性、寿命の保
証し難いものであった。However, if the entire polygon mirror is formed of plastics, the reliability against mechanical and thermal deformation is poor, and it is difficult to guarantee the reliability and the life when used over time and used under severe conditions.
＜発明の目的＞ 従って本発明の解決すべき技術的課題は上記従来欠点を
解消にあり、その目的とするところは、生産性が良く、
コストダウン或はミラー重量の軽減が可能で、且つ、機
械的・熱的変形に対する信頼性も保証出来るポリゴンミ
ラーをもつ光スキャナ用モータを提供するにある。<Object of the invention> Therefore, the technical problem to be solved by the present invention is to solve the above-mentioned conventional drawbacks, and the object is to have good productivity,
It is an object of the present invention to provide a motor for an optical scanner having a polygon mirror that can reduce the cost or the weight of the mirror and can also ensure the reliability against mechanical and thermal deformation.
＜問題点を解決するための技術的手段＞ 本発明の上記した目的は、駆動マグネットを備えた回転
子にポリゴンミラーを固着し、該ポリゴンミラーの回転
によって光のスキャナニングを行う光スキャナ用モータ
において、薄肉金属またセラミックスからなり、且つ、
一方を有底とした中空・略偏平多角柱状の台座部材の多
角外周面上に、薄肉のプラスチックス膜を成型によって
一体に被着・形成すると共に、該プラスチックス膜上に
金属薄膜を被着したものを、ポリゴンミラーとすること
によって、概略達成される。<Technical Means for Solving Problems> The above-described object of the present invention is to provide a motor for an optical scanner in which a polygon mirror is fixed to a rotor provided with a driving magnet, and light is scanned by rotating the polygon mirror. In, a thin metal or ceramics, and
A thin plastic film is integrally formed and formed by molding on the outer peripheral surface of a hollow or substantially flat polygonal pedestal member having one end as a bottom, and a metal thin film is also deposited on the plastic film. This can be roughly achieved by using the above as a polygon mirror.
＜作用＞ 中空・略偏平多角柱状の台座部材は、例えば金属板を絞
り加工することによって形成され、その多角外周面上に
成型によってプラスチックス膜が被着される。この際、
台座部材の多角外周面に多少の寸法誤差があっても、成
型金型の精度され維持されていれば（勿論、成型金型内
への台座部材の位置決め精度は要求されるが、プレスに
よって穿設される中心穴の精度は良好であるので、この
中心穴を基準として成型金型への台座部材の位置決めは
容易に達成できる。）、ミラー面下地となるプラスチッ
クス膜の表面の寸法精度は所期のものとなる。よって、
このプラスチックス膜上に公知の薄膜技術で金属薄膜を
被着すればポリゴンミラーが、生産性良く形成でき、且
つ軽量・安価なものとなる。また、台座部材は機械的強
度も優れ、モータの回転子に正確に取り付け・位置決め
でき、回転時の機械的・熱的変形に対する信頼性も高
い。<Operation> The hollow / substantially flat polygonal pedestal member is formed, for example, by drawing a metal plate, and the plastics film is attached to the outer peripheral surface of the polygon by molding. On this occasion,
Even if there is some dimensional error on the outer peripheral surface of the pedestal member, if the precision of the molding die is maintained (of course, the positioning accuracy of the pedestal member in the molding die is required, Since the accuracy of the center hole provided is good, it is easy to position the pedestal member on the molding die with reference to this center hole.), And the dimensional accuracy of the surface of the plastics film that is the base of the mirror surface is It is expected. Therefore,
By depositing a metal thin film on this plastics film by a known thin film technique, a polygon mirror can be formed with high productivity, and is lightweight and inexpensive. In addition, the pedestal member has excellent mechanical strength, can be accurately mounted and positioned on the rotor of the motor, and has high reliability against mechanical and thermal deformation during rotation.
また、台座部材をセラミックスで形成し、上記と同一手
法でプラスチックス膜及び金属薄膜を形成してポリゴン
ミラーとしれば、これも軽量で機械的強度に優れたもの
が、量産性良く形成できる。なお、現状セラミックスは
比較的高価であるが将来的にはコストダウンが期待でき
るし、セラミックスを用いると熱的変形に対する信頼性
が一層向上する。Further, if the pedestal member is made of ceramics and the plastics film and the metal thin film are formed by the same method as described above to form a polygon mirror, it is also lightweight and excellent in mechanical strength. Although ceramics are relatively expensive at present, cost reduction can be expected in the future, and the use of ceramics further improves the reliability against thermal deformation.
更にまた、上記２例共に各面のミラー角度が異なる異形
ポリゴンミラーであっても、生産性を損なうことなしに
所定精度を持つものを容易に提供できる。Furthermore, even in the above-mentioned two examples, it is possible to easily provide a deformed polygon mirror having different mirror angles on each surface, which has a predetermined accuracy without impairing the productivity.
＜実施例＞ 以下、本発明を第１図に示した１実施例によって説明す
る。<Example> The present invention will be described below with reference to an example shown in FIG.
図において、１はケーシングで、亜鉛ダイキャスト等か
ら形成され、中央円筒部２、底板部３、外周円筒部４等
が一体に形成されている。５、５はベアリングで、内・
外輪とこの間に介在されたボールとをもつ公知の構成を
とり、上記中央円筒部２内の圧入・固着されている。６
は金属製のロータシャフトで、上記ベアリング５、５に
圧入・軸支され、図示上側のベアリング５の内輪と必要
に応じ接着剤で固着される。７はAl、黄銅等の非磁性金
属よりなるスリーブで、上記ロータシャフト６に圧入・
固着され、必要に応じスラスト方向予圧を付与した状態
で（図示下向きに力を加えスリーブ７のボス7aをベアリ
ング５の内論に押し付けた状態で）、ロータシャフト６
とスリーブ７とは接着で固着される。８は駆動マグネッ
トで、上記スリーブ７の図示下端に固着されている。In the figure, reference numeral 1 denotes a casing, which is formed by zinc die casting or the like, and in which a central cylindrical portion 2, a bottom plate portion 3, an outer peripheral cylindrical portion 4 and the like are integrally formed. 5 and 5 are bearings,
A known structure having an outer ring and a ball interposed between the outer ring and the outer ring is adopted, and the central cylindrical portion 2 is press-fitted and fixed. 6
Is a metal rotor shaft, which is press-fitted and axially supported by the bearings 5 and 5, and is fixed to the inner ring of the bearing 5 on the upper side in the drawing with an adhesive as necessary. 7 is a sleeve made of non-magnetic metal such as Al or brass, which is press-fitted into the rotor shaft 6
The rotor shaft 6 is fixed and in a state where a thrust direction preload is applied as necessary (a state in which a boss 7a of the sleeve 7 is pressed against the inner diameter of the bearing 5 by applying a downward force in the drawing).
The sleeve 7 and the sleeve 7 are fixed by adhesion. A drive magnet 8 is fixed to the lower end of the sleeve 7 in the figure.
９は、リング状のヨークで、前記ケーシング１の外周円
筒部４に取り付け板10を介してネジ11止めされている。
12…は、図示せぬ絶縁支持体上に形成・保持された空芯
積層型のコイルで、適宜手段によってヨーク９の内周部
分に取り付けられている。そして、前記駆動マグネット
８、モーク９およびコイル12の共働で、回転子たる、ロ
ータシャフト６、スリーブ７、駆動マグネット８および
後述するポリゴンミラーが一体となって高速回転するよ
うになっていると共に、ラジアル方向に磁気吸引力が作
用してスリーブ７を微量変形させても、ポリゴンミラー
の回転精度には全く悪影響を与えないように考慮されて
いる。A ring-shaped yoke 9 is fixed to the outer peripheral cylindrical portion 4 of the casing 1 with a screw 11 via a mounting plate 10.
Denoted by 12 are air-core laminated coils formed and held on an insulating support (not shown), which are attached to the inner peripheral portion of the yoke 9 by appropriate means. The rotor magnet 6, which is a rotor, the rotor 7, the drive magnet 8, and a polygon mirror, which will be described later, rotate together at a high speed in cooperation with the drive magnet 8, the moke 9 and the coil 12. It is taken into consideration that even if the sleeve 7 is slightly deformed by a magnetic attraction force acting in the radial direction, the rotational accuracy of the polygon mirror is not adversely affected.
符号Ｐで総括的に示したポリゴンミラーは、中空・略偏
平多角柱状の台座部材13と、該台座部材13の多角外周面
（例えば５角形）上に成型によって一体に被着・形成さ
れたプラスチックス膜14と、該プラスチックス膜14上に
公知の薄膜技術で形成された金属薄膜15とからなってい
る。そして、該実施例においては上記台座部材13は、金
属板（例えば、Al、黄胴等）を絞り加工によって５角形
の盆状に形成してあると共に、多角外周面の各面のミラ
ー角度（回転軸心と平行な線分に対するミラー面の傾き
角度で、図巣では例えばα、βで示してある）が異なる
ように設定してある。このように金属板の絞り加工によ
って台座部材13を形成するようになすと、極めて量産性
に富むが、製造上避け難いミラー面の寸法誤差が生じる
ことは否めない。しかしながら、これは後述するプラス
チックス膜14の形成によって許容・吸収される。また、
ミラー面同志のコーナー部分にはＲ（丸み）がつくこと
になるが、ミラー面の実効面積部分にこのＲ部分を含め
なければ実用上何等差しつかえがない。A polygon mirror generally indicated by a symbol P is a hollow / substantially flat polygonal pedestal member 13 and a plastic integrally formed / formed on a polygonal outer peripheral surface (for example, a pentagon) of the pedestal member 13 by molding. And a metal film 15 formed on the plastic film 14 by a known thin film technique. In the embodiment, the pedestal member 13 is formed into a pentagonal tray by drawing a metal plate (for example, Al, yellow body, etc.), and the mirror angles ( The inclination angle of the mirror surface with respect to the line segment parallel to the axis of rotation is set so as to be different from each other, which is shown by α and β in the figure. If the pedestal member 13 is formed by drawing the metal plate as described above, the mass productivity is extremely high, but it is unavoidable that a dimensional error of the mirror surface is unavoidable in manufacturing. However, this is allowed and absorbed by the formation of the plastic film 14 described later. Also,
R (roundness) will be added to the corners of the mirror surfaces, but there is no practical problem if the R area is not included in the effective area of the mirror surface.
上述の台座部材13の多面外周上には、ポリカーボネイト
等からなるプラスチックス膜14がアウトサート成型によ
って全面に披着・形成される。この成型に際し、台座部
材13は正確に穿設されたその中心穴13aを位置決め基準
として成型金型内に正確に位置決めされ、同じく精度良
く形成された金型のキャビティ形成面と台座部材13の外
周面との間の微少間隙内に溶融樹脂が射出されて成型が
行われる。従って、例え台座部材13の多角外周面の精度
がバラツイていても、これにならって樹脂の膜厚が可変
・追従し、プラスチックス膜14の外面（表面）の寸法精
度は金型のキャビティ形成面で決定される所期の良好な
値が得られることになる。なお、図示のように、プラス
チックス膜14と台座部材13との密着強度を向上させるた
め、台座部材13の外周に適宜の小穴を穿設しておけば、
プラスチックス膜14と一体の抜け止め用膨出部14aを形
成させることができる。A plastics film 14 made of polycarbonate or the like is attached and formed on the entire surface of the above-described pedestal member 13 by outsert molding on the outer peripheral surface of the pedestal member 13. At the time of this molding, the pedestal member 13 is accurately positioned in the molding die with the center hole 13a that is accurately drilled as a positioning reference, and the cavity forming surface of the die and the outer periphery of the pedestal member 13 that are also precisely formed. Molding is performed by injecting a molten resin into a minute gap between the surface and the surface. Therefore, even if the precision of the polygonal outer peripheral surface of the pedestal member 13 varies, the film thickness of the resin can be varied and tracked accordingly, and the dimensional accuracy of the outer surface (surface) of the plastics film 14 can be determined by the cavity forming of the mold. It is possible to obtain the desired good value determined by the aspect. Incidentally, as shown in the drawing, in order to improve the adhesion strength between the plastics film 14 and the pedestal member 13, if appropriate small holes are formed in the outer periphery of the pedestal member 13,
It is possible to form a retaining bulge 14a that is integral with the plastics film 14.
上記のように形成されたプラスチックス膜14上には、Al
等よりなる金属薄膜15が蒸着等の薄膜技術で披着され、
更にこの上にSiO2よりなる保護薄膜が同じく蒸着等の手
段で被着される。そして、このように作製さえたポリゴ
ンミラーＰは、台座部材13の中心穴13aを前記ロータシ
ャフト６に嵌合されて位置決めされると共に、取り付け
ネジ16によって前記スリーブ７と固着され、回転子と一
体化される。On the plastics film 14 formed as described above, Al
The metal thin film 15 consisting of etc. was exhibited by thin film technology such as vapor deposition,
Further, a protective thin film made of SiO 2 is also deposited on this by means of vapor deposition or the like. The polygon mirror P thus manufactured is positioned by fitting the center hole 13a of the pedestal member 13 to the rotor shaft 6 and is fixed to the sleeve 7 by a mounting screw 16 to be integrated with the rotor. Be converted.
以上の如き該実施例構成においては、従前のように機械
的切削・研磨によってポリゴンミラーＰを形成するので
はなく、量産性に富んだ手法を採っているのでコスト低
減に大きく寄与すると共に、ミラー重量も軽減できる。
また、ポリゴンミラーＰの周面にのみプラスチックス膜
14を用い、他は補強材として機能する金属性の台座部材
13を使用しているので、機械的・熱的変形に対する信頼
性も高い。In the configuration of the embodiment as described above, the polygon mirror P is not formed by mechanical cutting / polishing as in the past, but a method having a high mass productivity is adopted, which greatly contributes to cost reduction and the mirror. Weight can also be reduced.
Moreover, a plastic film is formed only on the peripheral surface of the polygon mirror P.
A metal base member that uses 14 and the other functions as a reinforcing material.
Since 13 is used, it has high reliability against mechanical and thermal deformation.
本発明は上述した実施例以外にも種々の変形が可能で、
台座部材13を金属板をプレスで折り曲げ形成等しても良
く、また、台座部材13をセラミックスで形成しても良
い。台座部材13をセラミックスで形成する場合、公知の
成型・焼結法で形成し、前記実施例と同様にアウトサー
ト成型でプラスチックス膜14を形成し、同様にAlよりな
る金属薄膜15並びにSiO2薄膜を被着する。この場合も、
セラミックス製台座部材のミラー面の多少の寸法誤差は
樹脂成型工程で吸収・許容され、量産性を富むと共に、
ミラーの重量軽減が計れる。また、機械的・熱的変形に
対する信頼性も高く、特に熱的変形に対する信頼性は一
層向上する。The present invention can be modified in various ways other than the above-mentioned embodiment,
The base member 13 may be formed by bending a metal plate with a press, or the base member 13 may be formed of ceramics. When the pedestal member 13 is formed of ceramics, the pedestal member 13 is formed by a known molding / sintering method, the plastics film 14 is formed by outsert molding in the same manner as in the above-described embodiment, and the metal thin film 15 made of Al and SiO 2 are also formed. Deposit thin film. Also in this case,
Some dimensional error of the mirror surface of the ceramic pedestal member is absorbed and allowed in the resin molding process, which enhances mass productivity and
The weight of the mirror can be reduced. Further, the reliability against mechanical / thermal deformation is high, and particularly the reliability against thermal deformation is further improved.
＜効果＞ 以上のように本発明によれば、生産性が良く、コストダ
ウン或はミラー重量の軽減が可能で、且つ、機械的・熱
的変形に対する信頼性も保証出来るポリゴンミラーをも
つ光スキャナ用モータを提供でき、その価値は多大であ
る。<Effects> As described above, according to the present invention, an optical scanner having a polygon mirror, which has high productivity, can reduce the cost or reduce the weight of the mirror, and can also guarantee the reliability against mechanical and thermal deformation. Motor can be provided and its value is enormous.
第１図は本発明の１実施例に係る光スキャナ用モータの
正面断端面図である。 １……ケーシング ５……ベアリング ６……ロータシャフト ７……スリーブ ８……駆動マグネット ９……ヨーク 12……コイル Ｐ……ポリゴンミラー 13……台座部材 14……プラスチックス膜 15……金属薄膜FIG. 1 is a front sectional view of an optical scanner motor according to an embodiment of the present invention. 1 ... Casing 5 ... Bearing 6 ... Rotor shaft 7 ... Sleeve 8 ... Drive magnet 9 ... Yoke 12 ... Coil P ... Polygon mirror 13 ... Pedestal member 14 ... Plastic film 15 ... Metal Thin film
Claims (2)
ミラーを固着し、該ポリゴンミラーの回転によって光の
スキャンニングを行う光スキャナ用モータにおいて、 薄肉金属またはセラミックスからなり、且つ、一方を有
底とした中空・略偏平多角柱状の台座部材の多角外周面
上に、薄肉のプラスチックス膜を成型によって一体に被
着・形成すると共に、該プラスチックス膜上に金属薄膜
を被着したものを、ポリゴンミラーとしたことを特徴と
する光スキャナ用モータ。1. A motor for an optical scanner in which a polygon mirror is fixed to a rotor having a drive magnet, and scanning of light is performed by the rotation of the polygon mirror. The motor is made of thin metal or ceramics and one of which has a bottom. On the polygonal outer peripheral surface of the hollow / substantially flat polygonal pedestal member, a thin plastics film is integrally attached / formed by molding, and a metal thin film is attached on the plastics film. A motor for an optical scanner, which is a polygon mirror.
グネットを取り付けた非磁性金属よりなるスリーブが固
着されていることを特徴とする特許請求の範囲（１）項
記載の光スキャナ用モータ。2. A motor for an optical scanner according to claim 1, wherein a sleeve made of non-magnetic metal having a drive magnet attached thereto is fixed to the rotor shaft of the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19224386A JPH07119898B2 (en) | 1986-08-18 | 1986-08-18 | Motor for optical scanning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19224386A JPH07119898B2 (en) | 1986-08-18 | 1986-08-18 | Motor for optical scanning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6348511A JPS6348511A (en) | 1988-03-01 |
| JPH07119898B2 true JPH07119898B2 (en) | 1995-12-20 |
Family
ID=16288040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19224386A Expired - Fee Related JPH07119898B2 (en) | 1986-08-18 | 1986-08-18 | Motor for optical scanning |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07119898B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2709636B2 (en) * | 1989-08-30 | 1998-02-04 | 日本電産株式会社 | Motor for laser beam printer |
| JP2726518B2 (en) * | 1989-10-07 | 1998-03-11 | 株式会社日立製作所 | Polygon mirror motor |
-
1986
- 1986-08-18 JP JP19224386A patent/JPH07119898B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6348511A (en) | 1988-03-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |