JPH0345981A - Photosensitive drum for electrophotography - Google Patents
Photosensitive drum for electrophotographyInfo
- Publication number
- JPH0345981A JPH0345981A JP18174189A JP18174189A JPH0345981A JP H0345981 A JPH0345981 A JP H0345981A JP 18174189 A JP18174189 A JP 18174189A JP 18174189 A JP18174189 A JP 18174189A JP H0345981 A JPH0345981 A JP H0345981A
- Authority
- JP
- Japan
- Prior art keywords
- drum
- resonance
- photosensitive drum
- oscillation
- adhered
- 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
- 239000000853 adhesive Substances 0.000 claims abstract description 3
- 230000001070 adhesive effect Effects 0.000 claims abstract description 3
- 239000003112 inhibitor Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract description 7
- 239000002390 adhesive tape Substances 0.000 abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- 230000010355 oscillation Effects 0.000 abstract 3
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920006311 Urethane elastomer Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 229960005265 selenium sulfide Drugs 0.000 description 1
Landscapes
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は電子写真用感光ドラムに関し、特に複写機、プ
リンター、ファクシミリ−等で採用されている電子写真
に用いられる感光ドラムに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a photosensitive drum for electrophotography, and particularly to a photosensitive drum used for electrophotography employed in copying machines, printers, facsimile machines, and the like.
かかる電子写真用の感光ドラムは複写機、プリンター、
ファクシミリ−等広範囲に使用されるようになってきて
いる。この感光ドラムにおいて、セレン、硫化カドミウ
ム等の無機感光体に対し無公害であり且つ量産性のある
有機感光体（ＯＰＣ）が急速に伸びている。また、最近
の真空技術を利用したアモロファスシリコン（ａ−８ｉ
） モ採用されはじめており、使用用紙サイズの自由度
の大きいドラム形状の感光体が広く用いられている。Such photosensitive drums for electrophotography are used in copiers, printers,
Facsimile machines have come to be widely used. In photosensitive drums, organic photoconductors (OPC), which are non-polluting and can be mass-produced, are rapidly increasing in contrast to inorganic photoconductors such as selenium and cadmium sulfide. In addition, we have developed amorphous silicon (A-8i) using the latest vacuum technology.
), and drum-shaped photoreceptors are now widely used, as they allow for greater flexibility in paper size.
また、電子写真の感光ドラムの使用プロセスは、通常、
露光、現像、転写、クリーニング、イレースの各プロセ
スが繰り返されている。ここでのクリーニングは用紙に
転写しきれずにドラム表面に残ったトナーをかき落すこ
とによりクリーニングしているが、これは一般的にウレ
タンゴム等の柔軟性のあるものでしごくことにより行な
われる。In addition, the process of using photosensitive drums for electrophotography is usually
The processes of exposure, development, transfer, cleaning, and erasing are repeated. The cleaning is performed by scraping off the toner remaining on the drum surface without being completely transferred to the paper, and this is generally done by squeezing with a flexible material such as urethane rubber.
一方、感光ドラムは管状となっており、管の材質の径お
よび肉厚等により多少異なるが、長さに反比例した固有
の周波数の共鳴音をもっている。On the other hand, the photosensitive drum has a tubular shape, and has a resonance sound with a unique frequency that is inversely proportional to its length, although it varies somewhat depending on the diameter and wall thickness of the material of the tube.
第２図はかかる従来の一例を説明するためのドラム長お
よび共鳴周波数を示す図である。FIG. 2 is a diagram showing drum lengths and resonance frequencies for explaining an example of such a conventional drum.
第２図において、例えば、（１）に示すようにφ６０゜
長さ２５０ｍｍのアルミ素管感光ドラムは基音として（
２）に示す約６００Ｈｚの共鳴音と、（３）〜（５）に
示すように、その複数の倍音とがある。これらの倍音と
しては、２倍音の１．２ＫＨｚ、４倍音の２．４ＫＨｚ
、８倍音の４．８ＫＨｚなどが出やすい倍音である。In Fig. 2, for example, as shown in (1), an aluminum photosensitive drum with a diameter of 60° and a length of 250 mm is used as the fundamental tone (
There is a resonance tone of approximately 600 Hz shown in 2) and its multiple overtones as shown in (3) to (5). These overtones include the second overtone at 1.2KHz and the fourth overtone at 2.4KHz.
, the 8th overtone of 4.8KHz, etc. are the overtones that tend to appear.
上述した従来の電子写真用感光ドラムは、クリーニング
時にウレタンゴム等により感光ドラム表面をしごくため
、しばしばこの共鳴音が発生し、複写機やプリンター等
の装置の騒音として大きな問題となっている。In the conventional electrophotographic photosensitive drum described above, the surface of the photosensitive drum is squeezed with urethane rubber or the like during cleaning, and this resonance noise often occurs, which is a major problem as noise in devices such as copying machines and printers.
本発明の目的は、かかるクリーニング時に発生する共鳴
音を無くすことのできる電子写真用感光ドラムを提供す
ることにある。An object of the present invention is to provide an electrophotographic photosensitive drum that can eliminate resonance sounds generated during cleaning.
本発明の電子写真用感光ドラムは、筒状内部に長さ固有
の周波数による共振を防止する複数の振動阻害物を接着
材により接着して構成される。The electrophotographic photosensitive drum of the present invention is constructed by bonding a plurality of vibration inhibiting members inside the cylinder with an adhesive to prevent resonance due to a frequency specific to the length.
次に、本発明の実施例について図面を参照して説明する
。Next, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例を示す電子写真用感光ドラム
の一部を切欠いた状態図である。FIG. 1 is a partially cutaway diagram of an electrophotographic photosensitive drum showing an embodiment of the present invention.
第１図に示すように、本実施例の感光ドラム１は管の両
端をフランジ等により蓋をされている。As shown in FIG. 1, the photosensitive drum 1 of this embodiment has a tube whose both ends are covered with flanges or the like.
そのドラム１の中は空間となっており、ここが共鳴空間
となって共鳴しやすい状態にある。第２図で説明したと
おり、共鳴音はクリーニングブレードによりドラム自体
が長さ固有の周波数で振動し、それがドラム中の空間で
共鳴するのである。本実施例はドラム１の内部に長さ固
有の振動阻害物としての鉛の重り２を両面接着テープ３
を介して張り付けることにより、共鳴音を完全に無くす
ものである。かかる振動阻害物を張り付ける点は振幅最
大点に張ることが基音（６００Ｈｚ）を防止するには最
も有効であるが、１．２ＫＨｚ等の倍音防止にはならな
いため、内部に複数個張り付ける。The inside of the drum 1 is a space, which becomes a resonant space and is in a state where resonance is likely to occur. As explained in FIG. 2, the resonance sound is caused by the cleaning blade causing the drum itself to vibrate at a frequency specific to its length, which resonates in the space inside the drum. In this embodiment, a double-sided adhesive tape 3 is attached with a lead weight 2 as a length-specific vibration inhibitor inside the drum 1.
By attaching the material through the material, resonant sound is completely eliminated. The most effective way to prevent the fundamental tone (600 Hz) is to attach such vibration inhibitors at the point of maximum amplitude, but since it does not prevent overtones such as 1.2 KHz, a plurality of them are attached inside.
特に、共鳴周波数の３分割点、９分割点等に張るのが倍
音防止にも有効である。また、振動阻害物としては、共
鳴振動を乱せば良いので、船尾外の比較的重量のあるも
のであればよい。In particular, it is effective to prevent overtones by applying it at the 3rd division point, 9th division point, etc. of the resonant frequency. Further, as the vibration inhibiting object, it is sufficient to disturb the resonance vibration, so it is sufficient to use a relatively heavy object located outside the stern.
すなわち、感光ドラム１はφ６０，２５０ｍｍのアルミ
素管を用いており、このドラム１の内面に鉛の重り２を
両面接着テープ３で張りつけるが、重り２を張り付けた
点は、共鳴周波数に対応する長さの３分割点に２個、９
分割点に１個張り付けている。これにより共鳴音を完全
に無くすことができる。That is, the photosensitive drum 1 uses an aluminum tube with a diameter of 60,250 mm, and a lead weight 2 is attached to the inner surface of the drum 1 using double-sided adhesive tape 3, and the points where the weight 2 is attached correspond to the resonant frequency. 2 pieces at the third division point of the length, 9
One is pasted at the dividing point. This allows resonance to be completely eliminated.
以上説明したように、本発明の電子写真用感光ドラムは
、内部に重りをはり付けることにより、電子写真プリン
ターや複写機等の騒音、すわなちクリーニングブレード
の擦り付けによって発生する共鳴音を完全に無くすこと
ができるという効果がある。As explained above, the electrophotographic photosensitive drum of the present invention completely eliminates the noise generated by electrophotographic printers, copiers, etc., that is, the resonant sound generated by the rubbing of cleaning blades, by attaching a weight to the inside of the electrophotographic photosensitive drum. It has the effect of being able to eliminate it.
第１図は本発明の一実施例を示す電子写真用感光ドラム
の一部を切欠いた状態図、第２図は従来の一例を説明す
るためのドラム長および共鳴周波数を示す図である。
１・・
・・感光ドラム、
・・・・鉛の重り、
３・・・・・・両
面接着テープ。FIG. 1 is a partially cutaway diagram of an electrophotographic photosensitive drum according to an embodiment of the present invention, and FIG. 2 is a diagram showing a drum length and resonance frequency for explaining a conventional example. 1...Photosensitive drum,...Lead weight, 3...Double-sided adhesive tape.
Claims (1)
の振動阻害物を接着材により接着したことを特徴とする
電子写真用感光ドラム。A photosensitive drum for electrophotography, characterized in that a plurality of vibration inhibitors for preventing resonance due to a frequency specific to its length are bonded inside a cylindrical shape with an adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18174189A JPH0345981A (en) | 1989-07-13 | 1989-07-13 | Photosensitive drum for electrophotography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18174189A JPH0345981A (en) | 1989-07-13 | 1989-07-13 | Photosensitive drum for electrophotography |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0345981A true JPH0345981A (en) | 1991-02-27 |
Family
ID=16106077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18174189A Pending JPH0345981A (en) | 1989-07-13 | 1989-07-13 | Photosensitive drum for electrophotography |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0345981A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5272506A (en) * | 1991-07-31 | 1993-12-21 | Canon Kabushiki Kaisha | Contactable charging device for applying an oscillating voltage, process cartridge and image forming apparatus using the same |
| US5463450A (en) * | 1991-07-31 | 1995-10-31 | Canon Kabushiki Kaisha | Charging device for applying an oscillating voltage to a member to be charged |
| JPH07319328A (en) * | 1994-05-30 | 1995-12-08 | Nec Corp | Vibration proofing device for photoreceptor drum |
| JP2008203850A (en) * | 2007-02-21 | 2008-09-04 | Xerox Corp | Imaging drum with acoustic dampening material |
| JP5494878B1 (en) * | 2013-09-17 | 2014-05-21 | 富士ゼロックス株式会社 | Image forming unit and image forming apparatus |
-
1989
- 1989-07-13 JP JP18174189A patent/JPH0345981A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5272506A (en) * | 1991-07-31 | 1993-12-21 | Canon Kabushiki Kaisha | Contactable charging device for applying an oscillating voltage, process cartridge and image forming apparatus using the same |
| US5463450A (en) * | 1991-07-31 | 1995-10-31 | Canon Kabushiki Kaisha | Charging device for applying an oscillating voltage to a member to be charged |
| JPH07319328A (en) * | 1994-05-30 | 1995-12-08 | Nec Corp | Vibration proofing device for photoreceptor drum |
| JP2008203850A (en) * | 2007-02-21 | 2008-09-04 | Xerox Corp | Imaging drum with acoustic dampening material |
| JP5494878B1 (en) * | 2013-09-17 | 2014-05-21 | 富士ゼロックス株式会社 | Image forming unit and image forming apparatus |
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