JP2595897B2 - Photoconductive drum anti-vibration device - Google Patents
Photoconductive drum anti-vibration deviceInfo
- Publication number
- JP2595897B2 JP2595897B2 JP6116382A JP11638294A JP2595897B2 JP 2595897 B2 JP2595897 B2 JP 2595897B2 JP 6116382 A JP6116382 A JP 6116382A JP 11638294 A JP11638294 A JP 11638294A JP 2595897 B2 JP2595897 B2 JP 2595897B2
- Authority
- JP
- Japan
- Prior art keywords
- drum
- vibration
- photosensitive drum
- cantilever
- vibration device
- 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
Landscapes
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
- Vibration Prevention Devices (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はプリンタ、複写機及びフ
ァクシミリ等の各種電子写真記録装置の感光体ドラムの
振動低減に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for reducing vibration of a photosensitive drum of various electrophotographic recording apparatuses such as a printer, a copying machine and a facsimile.
【０００２】[0002]
【従来の技術】従来、感光体ドラムの防振装置として
は、ドラム内部に鉄等の質量のある物を入れたりしてド
ラム自体の固有振動数を変化されることによって共振す
るのを防いでいる。2. Description of the Related Art Conventionally, a vibration damping device for a photosensitive drum has been used to prevent resonance by changing the natural frequency of the drum itself by putting a heavy object such as iron inside the drum. I have.
【０００３】[0003]
【発明が解決しようとする課題】上述した従来の技術で
は振動を効果的に抑制する為にドラムの重さが著しく重
くなってしまい、変化させられる重さにも限度がある。In the prior art described above, the weight of the drum becomes extremely heavy in order to effectively suppress vibration, and the weight that can be changed is limited.
【０００４】また、特開平４−１２０５８２号公報に
は、感光体ドラムの回転軸の一端に円板状動吸振器を備
えた防振装置が開示されている。しかし、この防振装置
は感光体ドラム外に固定されるため、スペースが必要と
なってしまう。Japanese Patent Application Laid-Open No. 4-120582 discloses a vibration damping device having a disk-shaped dynamic vibration absorber at one end of a rotating shaft of a photosensitive drum. However, since the vibration isolator is fixed outside the photosensitive drum, a space is required.
【０００５】本発明の目的は、ドラムの重さを変化させ
て共振を防ごうとするものではなく、また感光体ドラム
外に固定されるものでなく、ドラムにかかる振動をドラ
ム内部にもうけた片持梁に吸収してもらい、ドラム振動
を低減させる感光体ドラム防振装置を提供することにあ
る。An object of the present invention is not to prevent resonance by changing the weight of the drum, nor to fix vibration outside the photosensitive drum but to generate vibration applied to the drum inside the drum. An object of the present invention is to provide a photosensitive drum anti-vibration device that has a cantilever to absorb light and reduces drum vibration.
【０００６】[0006]
【課題を解決するための手段】本発明では、ドラム内部
に充填するのはドラム質量を増やす為の物ではなく振動
を吸収する為の片持梁なので、重さは必要ない。According to the present invention, since the inside of the drum is not a thing for increasing the drum mass but a cantilever for absorbing vibration, no weight is required.
【０００７】片持梁に必要なのはドラムと同等の固有振
動数を持っていることであり、その為にドラムに加えら
れる振動は全て片持梁に吸収される。What is required for the cantilever is that it has a natural frequency equivalent to that of the drum, so that all vibrations applied to the drum are absorbed by the cantilever.
【０００８】[0008]
【実施例】次に本発明の好ましい実施例について図面を
参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will now be described with reference to the drawings.
【０００９】図１は本発明の実施例を示す感光体ドラム
の断面図である。図において、感光体ドラム１内部の中
央に中心軸に垂直に設けた固定片１０に、感光体ドラム
と同等の固有振動数を持つ一対の片持梁２が固定されて
いる。片持梁２は固定片１０の表裏側に感光体ドラム１
の中心軸に対して対称になるよう固定される。FIG. 1 is a sectional view of a photosensitive drum showing an embodiment of the present invention. In the figure, a pair of cantilever beams 2 having a natural frequency equivalent to that of the photoconductor drum are fixed to a fixing piece 10 provided at the center inside the photoconductor drum 1 and perpendicular to the central axis. The cantilever 2 has the photosensitive drum 1 on the front and back sides of the fixed piece 10.
Is fixed so as to be symmetrical with respect to the central axis of.
【００１０】感光体ドラム１が回転軸３を中心に回転す
るときに振動エネルギーが感光体ドラム１に加わったと
しても、図１（ｂ）のように片持梁２が振動エネルギー
を吸収（感光体ドラムのかわりに片持梁が振動）するこ
とにより、ドラムの振動が低減される。Even if vibration energy is applied to the photosensitive drum 1 when the photosensitive drum 1 rotates about the rotation shaft 3, the cantilever 2 absorbs the vibration energy (photosensitive) as shown in FIG. Vibration of the cantilever beam instead of the body drum reduces vibration of the drum.
【００１１】図２は本発明の別の実施例を示す断面図で
ある。本実施例は、片持梁２が感光体ドラム１の両端の
開口を塞ぐ部材に固定されている。このように片持梁２
が固定される位置は感光体ドラム１の内部であれば、ど
こでもよい。片持梁２は、ドラムの中心あるいは中央に
対して対称な位置に固定されることが、振動エネルギー
の吸収バランスの関係ですぐれるが、必ずしも対称であ
る必要はない。また片持梁２は１つでもよい。FIG. 2 is a sectional view showing another embodiment of the present invention. In this embodiment, the cantilever 2 is fixed to a member that closes the openings at both ends of the photosensitive drum 1. Thus cantilever 2
The position at which is fixed may be anywhere within the photosensitive drum 1. It is preferable that the cantilever 2 is fixed at a symmetrical position with respect to the center or the center of the drum in terms of the balance of absorption of vibration energy, but it is not necessarily required to be symmetrical. The number of cantilevers 2 may be one.
【００１２】[0012]
【発明の効果】以上説明したように、本発明は感光体ド
ラムと同等の固有振動数をもつ片持梁をドラム内部に設
けて振動を減少することによって、感光体ドラムを特に
重くせずに画質の向上やドラム振動によって発生する音
を減少できる。As described above, according to the present invention, the cantilever having the same natural frequency as the photosensitive drum is provided inside the drum to reduce the vibration, so that the photosensitive drum is not particularly heavy. It is possible to improve the image quality and reduce the sound generated by the drum vibration.
【図１】本発明の実施例の感光体ドラムを示す断面図で
ある。FIG. 1 is a sectional view showing a photosensitive drum according to an embodiment of the present invention.
【図２】本発明の別の実施例の感光体ドラムを示す断面
図である。FIG. 2 is a sectional view showing a photosensitive drum according to another embodiment of the present invention.
１ 感光体ドラム ２ 振動吸収の為の片持梁 ３ 回転軸 DESCRIPTION OF SYMBOLS 1 Photoreceptor drum 2 Cantilever for absorbing vibration 3 Rotation axis
フロントページの続き (56)参考文献 特開 平３−45981（ＪＰ，Ａ) 特開 平３−140989（ＪＰ，Ａ) 特開 平２−118684（ＪＰ，Ａ) 特開 平６−133122（ＪＰ，Ａ) 特開 平６−95561（ＪＰ，Ａ) 特開 平５−35167（ＪＰ，Ａ) 特開 平５−35166（ＪＰ，Ａ) 特開 平５−34936（ＪＰ，Ａ) 特開 平４−120582（ＪＰ，Ａ) 特開 平４−56885（ＪＰ，Ａ) 特開 平７−199731（ＪＰ，Ａ) 実開 平１−146265（ＪＰ，Ｕ) 実開 昭63−92355（ＪＰ，Ｕ) 実開 平５−69768（ＪＰ，Ｕ) 実開 昭62−127567（ＪＰ，Ｕ)Continuation of front page (56) References JP-A-3-45981 (JP, A) JP-A-3-140899 (JP, A) JP-A-2-118684 (JP, A) JP-A-6-133122 (JP) JP-A-6-95561 (JP, A) JP-A-5-35167 (JP, A) JP-A-5-35166 (JP, A) JP-A-5-34936 (JP, A) 4-120582 (JP, A) JP-A-4-56885 (JP, A) JP-A-7-199731 (JP, A) JP-A-1-146265 (JP, U) JP-A-63-92355 (JP, A) U) Japanese Utility Model Hei 5-69768 (JP, U) Japanese Utility Model Sho 62-127567 (JP, U)
Claims (1)
において、感光体ドラムの両端を塞ぐ部材に前記感光体
ドラムの中心に対して対象な位置に１対の片持梁を固定
し、前記片持梁で前記感光体ドラムの振動エネルギーを
吸収することを特徴とする感光体ドラムの防振装置。In a vibration damping device for a photosensitive drum of an electrophotographic apparatus, a member for closing both ends of the photosensitive drum is provided with the photosensitive member.
A pair of cantilever beams are fixed at the target position with respect to the center of the drum
And the vibration energy of the photosensitive drum is reduced by the cantilever.
A vibration damping device for a photosensitive drum, which absorbs light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6116382A JP2595897B2 (en) | 1994-05-30 | 1994-05-30 | Photoconductive drum anti-vibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6116382A JP2595897B2 (en) | 1994-05-30 | 1994-05-30 | Photoconductive drum anti-vibration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07319328A JPH07319328A (en) | 1995-12-08 |
| JP2595897B2 true JP2595897B2 (en) | 1997-04-02 |
Family
ID=14685629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6116382A Expired - Fee Related JP2595897B2 (en) | 1994-05-30 | 1994-05-30 | Photoconductive drum anti-vibration device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2595897B2 (en) |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61127567U (en) * | 1985-01-30 | 1986-08-11 | ||
| JPS6392355U (en) * | 1986-12-05 | 1988-06-15 | ||
| JPH01146265U (en) * | 1988-03-29 | 1989-10-09 | ||
| JPH02118684A (en) * | 1988-10-28 | 1990-05-02 | Nec Corp | Process cartridge |
| JPH0345981A (en) * | 1989-07-13 | 1991-02-27 | Nec Corp | Photosensitive drum for electrophotography |
| JPH03140989A (en) * | 1989-10-27 | 1991-06-14 | Toshiba Corp | Image forming device |
| JPH0456885A (en) * | 1990-06-22 | 1992-02-24 | Mita Ind Co Ltd | Photosensitive drum |
| JPH04120582A (en) * | 1990-09-11 | 1992-04-21 | Fuji Xerox Co Ltd | Vibrationproofing device for photosensitive drum |
| JPH0534936A (en) * | 1991-07-31 | 1993-02-12 | Canon Inc | Production of electrophotographic sensitive body |
| JPH0535167A (en) * | 1991-08-03 | 1993-02-12 | Canon Inc | Image holding member and process cartridge formed by using this member and image forming device |
| JPH0569768U (en) * | 1992-02-24 | 1993-09-21 | 株式会社リコー | Electrophotographic photoconductor drum |
| JP3258719B2 (en) * | 1992-09-11 | 2002-02-18 | コニカ株式会社 | Image output equipment |
| JPH06133122A (en) * | 1992-10-21 | 1994-05-13 | Konica Corp | Image forming output device |
| JP2671792B2 (en) * | 1993-12-28 | 1997-10-29 | 日本電気株式会社 | Electrophotographic printer |
-
1994
- 1994-05-30 JP JP6116382A patent/JP2595897B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07319328A (en) | 1995-12-08 |
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Legal Events
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|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19961105 |
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| S111 | Request for change of ownership or part of ownership |
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| LAPS | Cancellation because of no payment of annual fees |