JPH08201714A - Optical deflection scanner - Google Patents
Optical deflection scannerInfo
- Publication number
- JPH08201714A JPH08201714A JP3598895A JP3598895A JPH08201714A JP H08201714 A JPH08201714 A JP H08201714A JP 3598895 A JP3598895 A JP 3598895A JP 3598895 A JP3598895 A JP 3598895A JP H08201714 A JPH08201714 A JP H08201714A
- Authority
- JP
- Japan
- Prior art keywords
- receiving member
- rotary
- thermal expansion
- mirror
- fixed
- 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.)
- Granted
Links
Landscapes
- Mechanical Optical Scanning Systems (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、レーザービームプリン
タ等の記録装置に使用され、光ビームを偏向走査するた
めの回転多面鏡を備えた光偏向走査装置に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical deflection scanning device used in a recording device such as a laser beam printer and provided with a rotary polygon mirror for deflecting and scanning an optical beam.
【０００２】[0002]
【従来の技術】近年、この種の光偏向走査装置では回転
多面鏡を高速度・高精度で回転させることが要求されて
おり、この要求を満たすために回転多面鏡は非接触で回
転する回転体に固定されている。2. Description of the Related Art In recent years, in this type of optical deflection scanning device, it has been required to rotate a rotary polygon mirror at high speed and with high precision. To meet this requirement, the rotary polygon mirror rotates in a non-contact manner. It is fixed to the body.
【０００３】図４は本出願人が特願平６−１３３７０３
号として出願した光偏向走査装置の断面図であり、ハウ
ジング１にはセラミック材料により形成された固定軸２
が立設され、この固定軸２にはセラミック材料により形
成された回転体としての回転スリーブ３が嵌合されてい
る。回転スリーブ３にはアルミニウム、黄銅等により形
成された受部材４が固定され、この受部材４の外周には
駆動マグネット５が固着されている。駆動マグネット５
に対向するステータ６は、ハウジング１の上面に固定さ
れた基板７の上面に配置されている。FIG. 4 shows the present applicant's Japanese Patent Application No. 6-133703.
2 is a cross-sectional view of an optical deflection scanning device applied for as a publication, in which a fixed shaft 2 made of a ceramic material is provided in a housing 1.
Is erected, and a rotary sleeve 3 made of a ceramic material as a rotary body is fitted to the fixed shaft 2. A receiving member 4 made of aluminum, brass or the like is fixed to the rotary sleeve 3, and a drive magnet 5 is fixed to the outer periphery of the receiving member 4. Drive magnet 5
The stator 6 opposed to is disposed on the upper surface of the substrate 7 fixed to the upper surface of the housing 1.
【０００４】また、回転スリーブ３の下端には永久磁石
８が固定されており、この永久磁石８の下方には、永久
磁石９が永久磁石８を上方へ反発するように固定軸２に
配置され、永久磁石８の上方には、永久磁石１０が永久
磁石８を永久磁石９に向けて反発するようにハウジング
１に配置されている。そして、受部材４の上面には、ア
ルミニウム製の回転多面鏡１１が回転スリーブ３に嵌合
された状態で搭載され、この回転多面鏡１１は回転スリ
ーブ３に固定された板ばね１２により押圧固定されてい
る。A permanent magnet 8 is fixed to the lower end of the rotary sleeve 3, and a permanent magnet 9 is arranged below the permanent magnet 8 on the fixed shaft 2 so as to repel the permanent magnet 8 upward. Above the permanent magnet 8, a permanent magnet 10 is arranged in the housing 1 so as to repel the permanent magnet 8 toward the permanent magnet 9. The rotary polygon mirror 11 made of aluminum is mounted on the upper surface of the receiving member 4 in a state of being fitted to the rotary sleeve 3, and the rotary polygon mirror 11 is pressed and fixed by the leaf spring 12 fixed to the rotary sleeve 3. Has been done.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら上述した
従来例では、回転多面鏡１１が一般にアルミニウム製と
され、かつセラミック材料により形成された回転スリー
ブ３に嵌合され、更にアルミニウム、黄銅等により形成
された受部材４に押圧固定されているため、回転スリー
ブ３、受部材４及び回転多面鏡１１の熱膨張係数がそれ
ぞれ異なる。However, in the above-mentioned conventional example, the rotary polygon mirror 11 is generally made of aluminum and fitted to the rotary sleeve 3 made of a ceramic material, and further made of aluminum, brass or the like. Since it is pressed and fixed to the receiving member 4, the rotary sleeve 3, the receiving member 4, and the rotary polygon mirror 11 have different thermal expansion coefficients.
【０００６】従って、温度が変化した場合には回転スリ
ーブ３、受部材４及び回転多面鏡１１が個々に膨縮する
ため、回転多面鏡１１に位置ずれが発生し、初期に設定
した回転多面鏡１１の動的釣り合いや光学的特性が変化
してしまうという欠点がある。Therefore, when the temperature changes, the rotary sleeve 3, the receiving member 4, and the rotary polygon mirror 11 expand and contract individually, so that the rotary polygon mirror 11 is displaced, and the rotary polygon mirror initially set. 11 has a drawback that the dynamic balance and optical characteristics of 11 are changed.
【０００７】本発明の目的は、温度が変化しても回転多
面鏡の初期の動的釣り合いや光学的特性を変化させるこ
とのない光偏向走査装置を提供することにある。An object of the present invention is to provide an optical deflection scanning device which does not change the initial dynamic balance and optical characteristics of the rotary polygon mirror even when the temperature changes.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
の本発明に係る光偏向走査装置は、回転体に固定した受
部材に回転鏡を固定し、該回転鏡により光ビームを偏向
走査する光偏向走査装置において、前記受部材及び回転
鏡を略同等の熱膨張係数の材料により形成し、前記受部
材には前記回転鏡を嵌合する嵌合部を設け、該嵌合部と
前記回転体の間には空隙部を設けたことを特徴とする。In order to achieve the above object, an optical deflection scanning device according to the present invention fixes a rotary mirror to a receiving member fixed to a rotary body, and deflects and scans a light beam by the rotary mirror. In the optical deflection scanning device, the receiving member and the rotating mirror are made of materials having substantially the same thermal expansion coefficient, and the receiving member is provided with a fitting portion for fitting the rotating mirror. A feature is that a void is provided between the bodies.
【０００９】[0009]
【作用】上述の構成を有する光偏向走査装置では、受部
材及び回転鏡を略同等の熱膨張係数の材料により形成
し、受部材には回転鏡と嵌合する嵌合部を設け、この嵌
合部と回転体の間には空隙部を設けたので、温度が変化
した際に受部材及び回転鏡は略同等に膨縮し、嵌合部が
空隙部内を自由に膨縮する。従って、回転鏡が初期の位
置から変化することがなく、回転鏡の初期の動的釣り合
いや光学的特性が変化することがない。In the optical deflection scanning device having the above-mentioned structure, the receiving member and the rotating mirror are made of materials having substantially the same thermal expansion coefficient, and the receiving member is provided with a fitting portion for fitting with the rotating mirror. Since the gap is provided between the joining portion and the rotating body, the receiving member and the rotary mirror expand and contract substantially equally when the temperature changes, and the fitting portion expands and contracts freely in the gap. Therefore, the rotating mirror does not change from its initial position, and the initial dynamic balance and optical characteristics of the rotating mirror do not change.
【００１０】[0010]
【実施例】本発明を図１〜図３に図示の実施例に基づい
て詳細に説明する。図１は第１の実施例の光偏向走査装
置２０の断面図であり、ハウジング２１にはセラミック
材料により形成された固定軸２２が立設され、この固定
軸２２にはセラミック材料により形成された回転体とし
ての回転スリーブ２３が嵌合されている。酸化アルミニ
ウムＡｌ2 Ｏ3 等のセラミック材料の熱膨張係数が２〜
６×１０-6Ｋ-1程度であり、高強度窒化ケイ素Ｓｉ3 Ｎ
4 等では熱膨張係数が２．７×１０-6Ｋ-1程度である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in FIGS. FIG. 1 is a cross-sectional view of an optical deflection scanning device 20 of the first embodiment. A housing 21 is provided with a fixed shaft 22 made of a ceramic material, and the fixed shaft 22 is made of a ceramic material. A rotary sleeve 23 as a rotary body is fitted. The thermal expansion coefficient of a ceramic material such as aluminum oxide Al 2 O 3 is 2 to
6 × 10 −6 K −1 , high strength silicon nitride Si 3 N
In the case of 4 etc., the coefficient of thermal expansion is about 2.7 × 10 -6 K -1 .
【００１１】回転スリーブ２３の外周には、受部材２４
が焼嵌め等により固定されている。この受部材２４の外
周には、駆動マグネット２５が接着等により固定され、
駆動マグネット２５に対向するステータ２６が、ハウジ
ング２１に固定された基板２７の上面に配置されてい
る。回転スリーブ２３の下端には第１の永久磁石２８が
固定されており、この永久磁石２８の下方の固定軸２２
には、第２の永久磁石２９が第１の永久磁石２８を上方
へ反発するように配置されている。同様に、第１の永久
磁石２８の上方のハウジング２１には、第３の永久磁石
３０が第１の永久磁石２８を第２の永久磁石２９に向け
て反発するように配置されている。これにより、回転ス
リーブ２３は駆動マグネット２５、ステータ２６、基板
２７等の構成により回転駆動され、回転に際してラジア
ル方向には固定軸２２に空気膜を介して非接触で支持さ
れ、スラスト方向には永久磁石２８、２９、３０により
磁気的に非接触で支持される。A receiving member 24 is provided on the outer circumference of the rotary sleeve 23.
Are fixed by shrink fitting. A drive magnet 25 is fixed to the outer periphery of the receiving member 24 by adhesion or the like.
A stator 26 facing the drive magnet 25 is arranged on the upper surface of a substrate 27 fixed to the housing 21. A first permanent magnet 28 is fixed to the lower end of the rotating sleeve 23, and the fixed shaft 22 below the permanent magnet 28.
, The second permanent magnet 29 is arranged so as to repel the first permanent magnet 28 upward. Similarly, in the housing 21 above the first permanent magnet 28, the third permanent magnet 30 is arranged so as to repel the first permanent magnet 28 toward the second permanent magnet 29. As a result, the rotary sleeve 23 is rotationally driven by the structure of the drive magnet 25, the stator 26, the substrate 27, etc., and is supported in the radial direction in a non-contact manner on the fixed shaft 22 via the air film in the radial direction and permanently in the thrust direction. The magnets 28, 29, 30 are magnetically supported in a non-contact manner.
【００１２】受部材２４の上面には回転多面鏡３１が搭
載され、回転スリーブ２３に固定された板ばね３２によ
り押圧固定されている。ここで、回転多面鏡３１は一般
のアルミニウム製とされ、その熱膨張係数は２２×１０
-6Ｋ-1程度とされている。また、受部材２４は熱膨張係
数が２２×１０-6Ｋ-1程度のアルミニウム、又は熱膨張
係数が２０×１０-6Ｋ-1程度の黄銅等により形成されて
いる。受部材２４の上面には、回転多面鏡３１の嵌合孔
３１ａに嵌合する嵌合突起２４ａが設けられている。嵌
合突起２４ａの内周面と回転スリーブ２３の外周面の間
には空隙部Ａが設けられ、この空隙部Ａの深さは嵌合突
起２４ａの高さと同等か、それよりも大きくされてい
る。そして、受部材２４に固定された回転多面鏡３１に
は動的釣り合いが設定され、その光学的特性が所定に保
持されている。A rotary polygon mirror 31 is mounted on the upper surface of the receiving member 24, and is pressed and fixed by a leaf spring 32 fixed to the rotary sleeve 23. Here, the rotary polygon mirror 31 is made of general aluminum and has a coefficient of thermal expansion of 22 × 10.
It is said to be about -6 K -1 . The receiving member 24 is made of aluminum having a thermal expansion coefficient of about 22 × 10 −6 K −1 or brass having a thermal expansion coefficient of about 20 × 10 −6 K −1 . On the upper surface of the receiving member 24, a fitting protrusion 24a that fits into the fitting hole 31a of the rotary polygon mirror 31 is provided. A gap A is provided between the inner peripheral surface of the fitting protrusion 24a and the outer peripheral surface of the rotary sleeve 23, and the depth of the gap A is equal to or larger than the height of the fitting protrusion 24a. There is. Then, a dynamic balance is set for the rotary polygon mirror 31 fixed to the receiving member 24, and its optical characteristics are held in a predetermined manner.
【００１３】このように構成された光偏向走査装置２０
は、図２の平面図に示すレーザービームプリンタ等の走
査光学系に取り付けられて使用される。即ち、光学箱４
１の所定位置にはレーザーユニット４２が設置されてお
り、このレーザーユニット４２からの光ビームの進行方
向には、シリンドリカルレンズ４３と、光偏向走査装置
２０の回転多面鏡３１とが光学箱４１の内部に配置され
ている。また、回転多面鏡３１により偏向された光ビー
ムの進行方向には、レンズ４４、４５が光学箱４１の内
部に配置され、感光体４６が光学箱４１の外部に配置さ
れている。The optical deflection scanning device 20 configured as described above
Is attached to a scanning optical system such as a laser beam printer shown in the plan view of FIG. That is, optical box 4
A laser unit 42 is installed at a predetermined position of 1. The cylindrical lens 43 and the rotary polygon mirror 31 of the optical deflection scanning device 20 are arranged in the optical box 41 in the traveling direction of the light beam from the laser unit 42. It is located inside. Further, in the traveling direction of the light beam deflected by the rotary polygon mirror 31, the lenses 44 and 45 are arranged inside the optical box 41, and the photoconductor 46 is arranged outside the optical box 41.
【００１４】レーザーユニット４２からの光ビームは、
シリンドリカルレンズ４３を透過して回転多面鏡３１の
鏡面に集光され、回転多面鏡３１により偏向走査され、
レンズ４４、４５により感光体４６にスポット状に結像
される。The light beam from the laser unit 42 is
The light passes through the cylindrical lens 43, is condensed on the mirror surface of the rotary polygon mirror 31, and is deflected and scanned by the rotary polygon mirror 31.
An image is formed in a spot shape on the photoconductor 46 by the lenses 44 and 45.
【００１５】ここで、温度が変化して受部材２４と回転
多面鏡３１が膨縮した場合には、受部材２４と回転多面
鏡３１の熱膨張係数が略同一であるため、受部材２４の
嵌合突起２４ａも回転多面鏡３１と同様に膨縮する。こ
のとき、回転スリーブ２３の外周面と嵌合突起２４ａの
内周面の間に空隙部Ａが設けられているため、嵌合突起
２４ａは回転スリーブ２３に影響を与えることなく、空
隙部Ａの内部に容易に膨縮し、回転多面鏡３１は初期の
位置からずれることがない。When the receiving member 24 and the rotary polygon mirror 31 expand and contract due to the temperature change, the thermal expansion coefficients of the receiving member 24 and the rotary polygon mirror 31 are substantially the same, so that the receiving member 24 is The fitting protrusion 24a also expands and contracts similarly to the rotary polygon mirror 31. At this time, since the void portion A is provided between the outer peripheral surface of the rotating sleeve 23 and the inner peripheral surface of the fitting protrusion 24a, the fitting protrusion 24a does not affect the rotating sleeve 23 and the gap portion A It easily expands and contracts inside, and the rotary polygon mirror 31 does not shift from the initial position.
【００１６】この第１の実施例では、固定軸２２と回転
スリーブ２３をセラミック材料により形成したため、そ
れらの嵌合部に塵埃等が混入し、それらが振動等により
接触しても、かじり等を防止することができ、特にそれ
らを高強度窒化ケイ素により形成した場合には、摩耗や
かじりを極めて良好に防止することができる。また、回
転多面鏡３１の位置ずれを防止することができるため、
初期に設定した動的釣り合いや光学的特性の変化を防止
することができる。In the first embodiment, since the fixed shaft 22 and the rotary sleeve 23 are made of a ceramic material, dust or the like is mixed in their fitting parts, and even if they come into contact with each other due to vibration or the like, galling or the like occurs. In particular, when they are made of high-strength silicon nitride, abrasion and galling can be prevented very well. Further, since it is possible to prevent the displacement of the rotary polygon mirror 31,
It is possible to prevent the dynamic balance and the change in optical characteristics that are initially set.
【００１７】図３は第２の実施例の光偏向走査装置５０
の断面図であり、第１の実施例では非接触軸受が用いら
れているのに対し、この第２の実施例ではボール軸受が
用いられている。即ち、ハウジング５１には回転軸５２
がボールベアリング５３、５４を介して支持されてお
り、回転軸５２には第１の実施例と同様な嵌合突起５５
ａ及び空隙部Ｂを有する受部材５５が固定されている。
受部材５５の外周にはロータヨーク５６が固定され、こ
のロータヨーク５６の下面には駆動マグネット５７が固
着されている。駆動マグネット５７に対向する駆動コイ
ル５８は、ハウジング５１に固定された基板５９の上面
に配置されている。FIG. 3 shows an optical deflection scanning device 50 of the second embodiment.
FIG. 4 is a cross-sectional view of a non-contact bearing used in the first embodiment, whereas a ball bearing is used in the second embodiment. That is, the housing 51 has a rotating shaft 52
Are supported via ball bearings 53, 54, and the rotary shaft 52 has a fitting projection 55 similar to that of the first embodiment.
A receiving member 55 having a and a void B is fixed.
A rotor yoke 56 is fixed to the outer periphery of the receiving member 55, and a drive magnet 57 is fixed to the lower surface of the rotor yoke 56. The drive coil 58 facing the drive magnet 57 is arranged on the upper surface of the substrate 59 fixed to the housing 51.
【００１８】そして、受部材５５の上面には回転多面鏡
６０が搭載され、その嵌合孔６０ａが受部材５５の嵌合
突起５５ａに嵌合されている。受部材５５に搭載された
回転多面鏡６０は、ばね部材６１により押圧されてお
り、このばね部材６１は回転軸５２に固定されたワッシ
ャ６２により移動が規制されている。The rotary polygon mirror 60 is mounted on the upper surface of the receiving member 55, and the fitting hole 60a is fitted into the fitting protrusion 55a of the receiving member 55. The rotary polygon mirror 60 mounted on the receiving member 55 is pressed by a spring member 61, and the movement of the spring member 61 is restricted by a washer 62 fixed to the rotating shaft 52.
【００１９】ここで、回転軸５２は一般的に熱膨張係数
が１０×１０-6Ｋ-1の鉄、又は熱膨張係数が１１×１０
-6Ｋ-1のステンレス鋼により形成されているが、受部材
５５は第１の実施例と同様に熱膨張係数が２２×１０-6
Ｋ-1のアルミニウムか、熱膨張係数が２０×１０-6Ｋ-1
の黄銅等により形成され、回転多面鏡６０も第１の実施
例と同様に熱膨張係数が２２×１０-6Ｋ-1のアルミニウ
ムにより形成されている。Here, the rotary shaft 52 generally has iron having a thermal expansion coefficient of 10 × 10 -6 K -1 , or has a thermal expansion coefficient of 11 × 10.
Although formed of stainless steel of -6 K -1 , the receiving member 55 has a coefficient of thermal expansion of 22 × 10 -6 as in the first embodiment.
Aluminum with K -1 or coefficient of thermal expansion of 20 × 10 -6 K -1
The rotary polygon mirror 60 is also made of aluminum having a coefficient of thermal expansion of 22 × 10 −6 K −1 similarly to the first embodiment.
【００２０】この第２の実施例では、回転軸５２が鉄又
はステンレス鋼により形成され、かつボールベアリング
５３、５４により支持されたことを除き、第１の実施例
と同様な作用効果が得られ、回転軸５２の熱膨張係数が
回転多面鏡６０の熱膨張係数と大きく異なっても、第１
の実施例と同様な作用効果が得られる。第１、第２の実
施例共に、受部材と回転多面鏡の熱膨張係数の差は２０
％以内であることが好ましい。In the second embodiment, the same operational effect as that of the first embodiment is obtained except that the rotary shaft 52 is made of iron or stainless steel and is supported by the ball bearings 53 and 54. , Even if the coefficient of thermal expansion of the rotary shaft 52 is significantly different from that of the rotary polygon mirror 60,
The same effect as that of the embodiment can be obtained. In both the first and second embodiments, the difference in the coefficient of thermal expansion between the receiving member and the rotary polygon mirror is 20.
% Is preferable.
【００２１】[0021]
【発明の効果】以上説明したように本発明に係る光偏向
走査装置は、受部材と回転鏡を熱膨張係数が略同一の材
料により形成し、受部材には回転鏡と嵌合する嵌合部を
設け、この嵌合部と回転体の間に空隙部を設けたため、
温度が変化した際には受部材及び回転鏡が略同等に膨縮
し、嵌合部が空隙部内を自由に膨縮する。従って、回転
鏡の位置の変化を防止することができ、回転鏡の初期の
動的釣り合いや光学的特性の変化を防止することができ
る。As described above, in the optical deflection scanning device according to the present invention, the receiving member and the rotating mirror are made of a material having substantially the same thermal expansion coefficient, and the receiving member is fitted to fit the rotating mirror. Since a space is provided between the fitting part and the rotating body,
When the temperature changes, the receiving member and the rotating mirror expand and contract substantially equally, and the fitting portion expands and contracts freely in the void. Therefore, it is possible to prevent a change in the position of the rotating mirror, and it is possible to prevent an initial dynamic balance of the rotating mirror and a change in optical characteristics.
【図面の簡単な説明】[Brief description of drawings]
【図１】第１の実施例の断面図である。FIG. 1 is a sectional view of a first embodiment.
【図２】走査光学系の平面図である。FIG. 2 is a plan view of a scanning optical system.
【図３】第２の実施例の断面図である。FIG. 3 is a sectional view of a second embodiment.
【図４】従来例の断面図である。FIG. 4 is a sectional view of a conventional example.
２１、５１ ハウジング ２２ 固定軸 ２３ 回転スリーブ ２４、５５ 受部材 ２４ａ、５５ａ 嵌合突起 ３１、６０ 回転多面鏡 ５２ 回転軸 Ａ、Ｂ 空隙部 21, 51 Housing 22 Fixed shaft 23 Rotating sleeve 24, 55 Receiving member 24a, 55a Fitting protrusion 31, 60 Rotating polygon mirror 52 Rotating shaft A, B Void
Claims (4)
し、該回転鏡により光ビームを偏向走査する光偏向走査
装置において、前記受部材及び回転鏡を略同等の熱膨張
係数の材料により形成し、前記受部材には前記回転鏡を
嵌合する嵌合部を設け、該嵌合部と前記回転体の間には
空隙部を設けたことを特徴とする光偏向走査装置。1. In an optical deflection scanning device in which a rotating mirror is fixed to a receiving member fixed to a rotating body, and the rotating mirror deflects and scans a light beam, the receiving member and the rotating mirror have substantially the same thermal expansion coefficient. The optical deflection scanning device is characterized in that the receiving member is provided with a fitting portion for fitting the rotary mirror, and a gap portion is provided between the fitting portion and the rotating body.
りも大きくした請求項１に記載の光偏向走査装置。2. The optical deflection scanning device according to claim 1, wherein the depth of the void portion is larger than the height of the fitting portion.
し、前記受部材及び回転鏡を非鉄系金属材料により形成
した請求項１に記載の光偏向走査装置。3. The optical deflection scanning device according to claim 1, wherein the rotating body is made of a ceramic material, and the receiving member and the rotating mirror are made of a non-ferrous metal material.
し、前記受部材及び回転鏡を非鉄系金属材料により形成
した請求項１に記載の光偏向走査装置。4. The optical deflection scanning device according to claim 1, wherein the rotating body is made of a ferrous metal material, and the receiving member and the rotating mirror are made of a non-ferrous metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3598895A JP3299654B2 (en) | 1995-01-31 | 1995-01-31 | Optical deflection scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3598895A JP3299654B2 (en) | 1995-01-31 | 1995-01-31 | Optical deflection scanner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08201714A true JPH08201714A (en) | 1996-08-09 |
| JP3299654B2 JP3299654B2 (en) | 2002-07-08 |
Family
ID=12457239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3598895A Expired - Fee Related JP3299654B2 (en) | 1995-01-31 | 1995-01-31 | Optical deflection scanner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3299654B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007139924A (en) * | 2005-11-16 | 2007-06-07 | Matsushita Electric Ind Co Ltd | Polygon mirror scanner motor |
-
1995
- 1995-01-31 JP JP3598895A patent/JP3299654B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007139924A (en) * | 2005-11-16 | 2007-06-07 | Matsushita Electric Ind Co Ltd | Polygon mirror scanner motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3299654B2 (en) | 2002-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0433483B1 (en) | A rotation device supporting a polygon mirror | |
| US6175174B1 (en) | Axial load carrying magnetic bearing for a rotatable body | |
| US6031651A (en) | Scanning optical apparatus | |
| US5532729A (en) | Scanner motor with ceramic sleeve bearing | |
| JP3299654B2 (en) | Optical deflection scanner | |
| US6392771B1 (en) | Bearing device and deflecting-scanning apparatus using the same | |
| US5754326A (en) | Optical deflector | |
| JP2974514B2 (en) | Scanning optical device | |
| JP3313941B2 (en) | Deflection scanning device | |
| JP3128975B2 (en) | Optical deflector | |
| JPS61269115A (en) | Device for supporting rotary body | |
| JPH09197329A (en) | Light deflecting scanner | |
| JPS61269111A (en) | Device for supporting rotary body | |
| JPH0442118A (en) | Dynamic pressure air bearing type polygon scanner | |
| JP2952086B2 (en) | Deflection scanning device | |
| JPH116975A (en) | Bearing device and deflecting scanner using the same | |
| JP2645526B2 (en) | Fluid bearing type optical deflector | |
| JPH11218711A (en) | Light deflector | |
| JP2005092132A (en) | Method of manufacturing rotating polygon mirror, rotating polygon mirror and light scanning device and image forming device using the same | |
| JPS61269117A (en) | Device for supporting rotary body | |
| JPH09230272A (en) | Optical deflection device | |
| JPS61269118A (en) | Device for supporting rotary body | |
| JPH08327932A (en) | Deflection scanner | |
| JP2000120659A (en) | Dynamic pressure air bearing, motor with the bearing, and light polarizer | |
| JPH10333075A (en) | Deflecting scanner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090419 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090419 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100419 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110419 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130419 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130419 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140419 Year of fee payment: 12 |
|
| LAPS | Cancellation because of no payment of annual fees |