JP2002169117A - Imaging device - Google Patents
Imaging deviceInfo
- Publication number
- JP2002169117A JP2002169117A JP2000367545A JP2000367545A JP2002169117A JP 2002169117 A JP2002169117 A JP 2002169117A JP 2000367545 A JP2000367545 A JP 2000367545A JP 2000367545 A JP2000367545 A JP 2000367545A JP 2002169117 A JP2002169117 A JP 2002169117A
- Authority
- JP
- Japan
- Prior art keywords
- writing
- bottom plate
- forming apparatus
- image forming
- optical housing
- 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
- 238000003384 imaging method Methods 0.000 title abstract 2
- 230000003287 optical effect Effects 0.000 claims abstract description 33
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 230000006866 deterioration Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
Landscapes
- Mounting And Adjusting Of Optical Elements (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Electrophotography Configuration And Component (AREA)
- Facsimile Scanning Arrangements (AREA)
- Laser Beam Printer (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、レーザービームを
偏向走査する書込光学装置によって画像を記録するレー
ザープリンタやデジタル複写機等の画像形成装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as a laser printer or a digital copying machine for recording an image by a writing optical device for deflecting and scanning a laser beam.
【０００２】[0002]
【従来の技術】従来、レーザープリンタやデジタル複写
機等の画像形成装置に用いられる書込光学装置には、光
学部品をオプティカルハウジングに収容した書込ユニッ
トが設置されている。書込ユニットでは、高速回転する
多面鏡によってレーザービーム等の光ビームを反射させ
てこれを偏向走査し、得られた走査光をミラーによって
感光体に結像させて静電潜像を形成する。次に、感光体
の静電潜像を現像装置によってトナー像に顕像化し、こ
れを記録紙等の記録媒体に転写して定着装置へ送り、記
録媒体上のトナーを加熱定着させて印刷が行われる。2. Description of the Related Art Conventionally, in a writing optical device used in an image forming apparatus such as a laser printer or a digital copying machine, a writing unit in which optical components are accommodated in an optical housing is installed. In the writing unit, a light beam such as a laser beam is reflected by a polygon mirror that rotates at a high speed, and the reflected light beam is deflected and scanned. Next, the electrostatic latent image on the photoreceptor is visualized into a toner image by a developing device, transferred to a recording medium such as recording paper and sent to a fixing device, and the toner on the recording medium is heated and fixed to perform printing. Done.
【０００３】近年では、画像の高精細化や印字の高速化
が進み、多面鏡のモータの駆動回転数が増大する傾向に
ある。モータを高速回転させると振動が増大し、振動は
オプティカルハウジングを伝わり、ミラーを振動させ
る。ミラーの振動はレーザービームにぶれを生じさせる
ため、記録された画像の画質劣化を起こすことがあり問
題となっていた。[0003] In recent years, higher definition of images and higher speed of printing have progressed, and the number of rotations of the motor of the polygon mirror has been increasing. When the motor rotates at a high speed, the vibration increases, and the vibration propagates through the optical housing, causing the mirror to vibrate. Since the vibration of the mirror causes the laser beam to be blurred, the quality of a recorded image may be deteriorated, which has been a problem.
【０００４】特に、書込ユニットを側板間に設けた書込
底板に固定する方式の場合、底板と書込光学装置の４隅
にて固定することになる。この方式であると、書込ユニ
ットが両持ち梁形状となるため中央部での振動が大きく
なり、画像劣化が起こりやすくなる。特開平１２−２８
９４９号公報においては、書込ユニットを書込底板に固
定する方式において、側板間距離の１／４よりも側板寄
りの位置に固定することによって振動を防止した画像形
成装置を提案している。しかし書込ユニットにおけるオ
プティカルハウジング自体の中央部の振動による画像劣
化には対応されていない。In particular, in the case where the writing unit is fixed to the writing bottom plate provided between the side plates, the writing unit is fixed at the four corners of the writing optical device. In this method, since the writing unit has a doubly supported beam shape, the vibration at the center becomes large, and the image is easily deteriorated. JP-A-12-28
Japanese Patent Application Publication No. 949 proposes an image forming apparatus in which a writing unit is fixed to a writing bottom plate, in which vibration is prevented by fixing the writing unit to a position closer to a side plate than １ ／ of the distance between the side plates. However, it does not deal with image degradation due to vibration of the central portion of the optical housing itself in the writing unit.
【０００５】[0005]
【発明が解決しようとする課題】上記問題点に鑑み、書
込ユニットを側板間に設けた書込底板に固定する方式の
画像形成装置において、書込ユニットにおけるオプティ
カルハウジング中央部の振動を押さえ、画像劣化を防止
した、より良好な画像品質の画像形成装置を提供するこ
とを目的とする。SUMMARY OF THE INVENTION In view of the above problems, in an image forming apparatus in which a writing unit is fixed to a writing bottom plate provided between side plates, vibration of a central portion of an optical housing in the writing unit is suppressed. An object of the present invention is to provide an image forming apparatus with better image quality in which image deterioration is prevented.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に、請求項１に記載の本発明は、回転走査装置を用いて
レーザービームを偏向走査する書込光学装置を本体構造
体の側板間に設けた書込底板に取り付ける構成である画
像形成装置において、光学部品を収納するオプティカル
ハウジングと書込底板とを弾性部材にて押圧固定するこ
とを特徴とする画像形成装置とする。According to a first aspect of the present invention, there is provided a writing optical device for deflecting and scanning a laser beam using a rotary scanning device between side plates of a main body structure. In the image forming apparatus, the optical housing accommodating the optical components and the write bottom plate are pressed and fixed by an elastic member.
【０００７】請求項２に記載の本発明は、請求項１に記
載の画像形成装置において、弾性押圧部材形状を樹脂製
オプティカルハウジングにて一体的に設けていることを
特徴とする画像形成装置とする。According to a second aspect of the present invention, there is provided an image forming apparatus according to the first aspect, wherein the shape of the elastic pressing member is integrally provided by a resin optical housing. I do.
【０００８】請求項３に記載の本発明は、請求項１に記
載の画像形成装置において、オプティカルハウジングと
書込底板とを押圧固定する弾性部材を熱伝導性部材で設
け、かつレーザービームを偏向走査する偏向走査装置の
軸受け部近傍に設置することを特徴とする画像形成装置
とする。According to a third aspect of the present invention, in the image forming apparatus of the first aspect, an elastic member for pressing and fixing the optical housing and the writing bottom plate is provided by a heat conductive member, and the laser beam is deflected. An image forming apparatus is provided near a bearing of a deflection scanning device for scanning.
【０００９】[0009]
【発明の実施の形態】本発明の実施の形態について説明
する。図１は本発明における書込光学装置の概略図であ
る。側板前部（１）と側板後部（２）に挟まれた配置で
書込底板（３）が設置されており、書込底板（３）に書
込ユニット（４）のオプティカルハウジング底部が概略
４隅を固定用ネジ（５）によって固定されている。Embodiments of the present invention will be described. FIG. 1 is a schematic diagram of a writing optical device according to the present invention. A write bottom plate (3) is provided in an arrangement sandwiched between the side plate front portion (1) and the side plate rear portion (2), and the optical housing bottom of the writing unit (4) is substantially four in the write bottom plate (3). The corners are fixed by fixing screws (5).
【００１０】図２は本発明の請求項１を説明する図であ
り、書込底板と書込ユニットを示す概略図である。書込
ユニット（４）のオプティカルハウジング底部の中央部
に弾性押圧部材（６）を固定している。書込底板（３）
は鋼板製で、立ち上がった両側面部にて側板前部（１）
と側板後部（２）とに固定されている。書込底板（３）
には弾性押圧部材（６）をセットするための開口部
（７）が設けられている。弾性押圧部材（６）に固定さ
れた書込ユニット（４）を書込底板（３）の開口部
（７）にあわせて乗せ、所定の位置までスライドさせる
ことによって弾性押圧部材（６）は書込底板（３）と書
込ユニット（４）を押圧固定する。FIG. 2 is a view for explaining claim 1 of the present invention, and is a schematic view showing a write bottom plate and a write unit. An elastic pressing member (6) is fixed to the center of the bottom of the optical housing of the writing unit (4). Writing bottom plate (3)
Is made of steel plate, and the side plate front part (1)
And the rear part (2) of the side plate. Writing bottom plate (3)
Is provided with an opening (7) for setting an elastic pressing member (6). The writing unit (4) fixed to the elastic pressing member (6) is mounted on the opening (7) of the writing bottom plate (3), and is slid to a predetermined position. The bottom plate (3) and the writing unit (4) are pressed and fixed.
【００１１】書込ユニット（４）のオプティカルハウジ
ング底部は両端部を固定用ネジ（５）で書込底板（３）
に固定されているため、振動を受けた場合は中央部の振
幅が一番大きくなるが、樹脂部材のオプティカルハウジ
ングに対してはるかに剛性が高い鋼板製の書込底板
（３）に書込ユニット（４）中央部が支持されるため、
書込ユニット（４）の振幅は書込底板（３）の振幅に近
いところまで低減される。The bottom of the optical housing of the writing unit (4) is fixed at both ends with fixing screws (5).
When it is subjected to vibration, the amplitude of the central portion becomes the largest when it is subjected to vibration. However, the writing unit is mounted on a steel plate writing bottom plate (3) having much higher rigidity with respect to the optical housing made of a resin member. (4) Since the center is supported,
The amplitude of the writing unit (4) is reduced to a point close to the amplitude of the writing bottom plate (3).
【００１２】図３は本発明の請求項２を説明する図であ
り、書込ユニットと書込底板を示す概略図である。書込
ユニット（４）のオプティカルハウジング底部には押圧
形状部（８）が設けられており、書込底板（３）の開口
部（７）にセットした後所定の位置まで書込ユニット
（４）をスライドさせることにより、押圧形状部（８）
によって書込底板（３）と書込ユニット（４）は押圧固
定され、書込ユニット（４）の振幅は書込底板（３）の
振幅に近いところまで低減される。FIG. 3 is a view for explaining claim 2 of the present invention, and is a schematic view showing a writing unit and a writing bottom plate. A pressing portion (8) is provided at the bottom of the optical housing of the writing unit (4), and after setting in the opening (7) of the writing bottom plate (3), the writing unit (4) reaches a predetermined position. By sliding the pressing part (8)
Thus, the writing bottom plate (3) and the writing unit (4) are pressed and fixed, and the amplitude of the writing unit (4) is reduced to a position close to the amplitude of the writing bottom plate (3).
【００１３】図４は請求項３を説明する図であり、偏向
走査装置と書き込みユニットと書込底板とを示す概略図
である。書込ユニット（４）を書込底板（３）に押圧固
定するための弾性押圧部材（１１）は熱伝導性部材にて
設けられており、これを書込ユニット（４）内部に設け
られている偏向走査装置（９）の軸受け部（１０）に近
接して設けることによって、軸受け部（１０）にて発生
した熱を書込底板（３）に逃がすことができる。また、
偏向走査装置（９）は書込ユニット（４）の概略中央に
設けられているため、ここに熱伝導性弾性押圧部材（１
１）を設ければ、書込ユニット（４）のオプティカルハ
ウジング自体の振幅も押さえ込むことが可能となる。FIG. 4 is a view for explaining claim 3 and is a schematic view showing a deflection scanning device, a writing unit, and a writing bottom plate. An elastic pressing member (11) for pressing and fixing the writing unit (4) to the writing bottom plate (3) is provided by a heat conductive member, and is provided inside the writing unit (4). The heat generated in the bearing (10) can be dissipated to the writing bottom plate (3) by providing the bearing near the bearing (10) of the deflection scanning device (9). Also,
Since the deflection scanning device (9) is provided at the approximate center of the writing unit (4), the deflection scanning device (9) is provided here with the heat conductive elastic pressing member (1).
If 1) is provided, the amplitude of the optical housing itself of the writing unit (4) can be suppressed.
【００１４】[0014]
【発明の効果】以上説明したように、本発明の請求項１
に記載の画像形成装置においては、オプティカルハウジ
ング底部の概略中央部に書込底板とオプティカルハウジ
ングを押圧固定する弾性部材を設けているため、オプテ
ィカルハウジング中央部の振動を低減した画像形成装置
を提供することができる。As described above, according to the first aspect of the present invention,
In the image forming apparatus described in (1), since the write bottom plate and the elastic member for pressing and fixing the optical housing are provided at the approximate center of the bottom of the optical housing, an image forming apparatus with reduced vibration of the center of the optical housing is provided. be able to.
【００１５】請求項２に記載の画像形成装置において
は、弾性押圧部材をオプティカルハウジングと一体で設
けているため、部品数の削減やコストダウンを図った画
像形成装置を提供することができる。In the image forming apparatus according to the second aspect, since the elastic pressing member is provided integrally with the optical housing, it is possible to provide an image forming apparatus in which the number of parts is reduced and the cost is reduced.
【００１６】請求項３に記載の画像形成装置において
は、弾性押圧部材を熱伝導性部材で設け、かつ偏向走査
装置軸受け部近傍に設置されているため、オプティカル
ハウジング中央部の振動を低減するとともに、偏向走査
装置軸受け部の冷却をも行うことが可能な画像形成装置
を提供することができる。In the image forming apparatus according to the third aspect, since the elastic pressing member is provided by a heat conductive member and is disposed near the bearing of the deflection scanning device, the vibration of the central portion of the optical housing can be reduced. In addition, it is possible to provide an image forming apparatus capable of also cooling the deflection scanning device bearing.
【図１】本発明における書込光学装置の概略図である。FIG. 1 is a schematic view of a writing optical device according to the present invention.
【図２】本発明における請求項１の説明図であり、書込
底板と書込ユニットを示す概略図である。FIG. 2 is an explanatory view of claim 1 of the present invention, and is a schematic view showing a writing bottom plate and a writing unit.
【図３】本発明における請求項２の説明図であり、書込
ユニットと書込底板を示す概略図である。FIG. 3 is an explanatory view of claim 2 of the present invention, and is a schematic view showing a writing unit and a writing bottom plate.
【図４】本発明における請求項３の説明図であり、偏向
走査装置と書き込みユニットと書込底板とを示す概略図
である。FIG. 4 is an explanatory view of claim 3 of the present invention, and is a schematic view showing a deflection scanning device, a writing unit, and a writing bottom plate.
１ 側板前部 ２ 側板後部 ３ 書込底板 ４ 書込ユニット ５ 固定用ネジ ６ 弾性押圧部材 ７ 開口部 ８ 押圧形状部 ９ 偏向走査装置 １０ 軸受け部 １１ 熱伝導性弾性押圧部材 DESCRIPTION OF SYMBOLS 1 Side plate front part 2 Side plate rear part 3 Writing bottom plate 4 Writing unit 5 Fixing screw 6 Elastic pressing member 7 Opening 8 Pressing shape part 9 Deflection scanning device 10 Bearing part 11 Heat conductive elastic pressing member
Claims (3)
偏向走査する書込光学装置を本体構造体の側板間に設け
た書込底板に取り付ける構成である画像形成装置におい
て、 光学部品を収納するオプティカルハウジングと書込底板
とを弾性部材にて押圧固定する ことを特徴とする画像
形成装置。1. An image forming apparatus in which a writing optical device for deflecting and scanning a laser beam using a rotary scanning device is attached to a writing bottom plate provided between side plates of a main body structure. An image forming apparatus, wherein a housing and a writing bottom plate are pressed and fixed by an elastic member.
て、 弾性押圧部材形状を樹脂製オプティカルハウジングにて
一体的に設けていることを特徴とする画像形成装置。2. The image forming apparatus according to claim 1, wherein the shape of the elastic pressing member is integrally provided by a resin optical housing.
て、 オプティカルハウジングと書込底板とを押圧固定する弾
性部材を熱伝導性部材で設け、かつレーザービームを偏
向走査する偏向走査装置の軸受け部近傍に設置する こ
とを特徴とする画像形成装置。3. The image forming apparatus according to claim 1, wherein an elastic member for pressing and fixing the optical housing and the write bottom plate is provided by a heat conductive member, and a bearing portion of the deflection scanning device for deflecting and scanning the laser beam. An image forming apparatus, which is installed in the vicinity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000367545A JP3889565B2 (en) | 2000-12-01 | 2000-12-01 | Image forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000367545A JP3889565B2 (en) | 2000-12-01 | 2000-12-01 | Image forming apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002169117A true JP2002169117A (en) | 2002-06-14 |
| JP3889565B2 JP3889565B2 (en) | 2007-03-07 |
Family
ID=18837948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000367545A Expired - Fee Related JP3889565B2 (en) | 2000-12-01 | 2000-12-01 | Image forming apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3889565B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005031584A (en) * | 2003-07-11 | 2005-02-03 | Toshiba Corp | Electrophotograph device |
| JP2006215267A (en) * | 2005-02-03 | 2006-08-17 | Ricoh Co Ltd | Optical scanner and image forming apparatus |
-
2000
- 2000-12-01 JP JP2000367545A patent/JP3889565B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005031584A (en) * | 2003-07-11 | 2005-02-03 | Toshiba Corp | Electrophotograph device |
| JP4669656B2 (en) * | 2003-07-11 | 2011-04-13 | 株式会社東芝 | Electrophotographic equipment |
| JP2006215267A (en) * | 2005-02-03 | 2006-08-17 | Ricoh Co Ltd | Optical scanner and image forming apparatus |
| JP4540494B2 (en) * | 2005-02-03 | 2010-09-08 | 株式会社リコー | Optical scanning apparatus and image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3889565B2 (en) | 2007-03-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6214153B2 (en) | Scanning optical apparatus and image forming apparatus | |
| JP5094513B2 (en) | Optical scanning apparatus and image forming apparatus | |
| EP1564577A2 (en) | Optical scanning apparatus and image forming apparatus | |
| JP4398289B2 (en) | Optical writing apparatus and image forming apparatus | |
| JP2002169117A (en) | Imaging device | |
| US8717640B2 (en) | Optical scanner and image forming apparatus including same | |
| JP6789666B2 (en) | Scanning optical device and image forming device | |
| CN110531514B (en) | Optical scanning device and image forming apparatus | |
| JP2001235699A (en) | Optical scanner and image forming device using same | |
| JPH082000A (en) | Electrophotographic apparatus | |
| JP4979081B2 (en) | Optical scanning device | |
| JP5320709B2 (en) | Image forming apparatus | |
| US11237385B2 (en) | Optical writing device and image forming apparatus | |
| JP4669656B2 (en) | Electrophotographic equipment | |
| JP7394590B2 (en) | Optical scanning device and image forming device equipped with the same | |
| JP2000002854A (en) | Light deflection scanning device and image forming device equipped therewith | |
| JP2001042241A (en) | Scanning optical device | |
| JPH1152270A (en) | Deflecting scanner | |
| JPH10253913A (en) | Deflection scanner | |
| JP2001166241A (en) | Deflecting and scanning device | |
| JP2006076250A (en) | Image forming device | |
| JPH11202252A (en) | Optical scanning device | |
| JPH10246864A (en) | Light deflection scanner | |
| JPH11202243A (en) | Optical scanning device and image forming device | |
| JPH11218717A (en) | Deflecting scanner and image forming device loaded with the scanner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20041208 |
|
| RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20041213 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20060413 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060725 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20060925 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20061107 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20061130 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101208 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101208 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111208 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111208 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121208 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131208 Year of fee payment: 7 |
|
| LAPS | Cancellation because of no payment of annual fees |