JPH0344689A - Electrophotographic photosensitive drum - Google Patents
Electrophotographic photosensitive drumInfo
- Publication number
- JPH0344689A JPH0344689A JP18117789A JP18117789A JPH0344689A JP H0344689 A JPH0344689 A JP H0344689A JP 18117789 A JP18117789 A JP 18117789A JP 18117789 A JP18117789 A JP 18117789A JP H0344689 A JPH0344689 A JP H0344689A
- Authority
- JP
- Japan
- Prior art keywords
- photosensitive drum
- electrophotographic photosensitive
- sound
- resonance
- drum
- 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
- 239000006096 absorbing agent Substances 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 abstract description 8
- 229920006311 Urethane elastomer Polymers 0.000 abstract description 4
- 239000006260 foam Substances 0.000 abstract description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 abstract 2
- 239000000463 material Substances 0.000 description 3
- 229920006328 Styrofoam Polymers 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920006248 expandable polystyrene Polymers 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000008261 styrofoam Substances 0.000 description 2
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 239000004033 plastic Substances 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、特に複写機のプ
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 copiers, 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
勇気感光体（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イン（ａ−
８ｔ）も使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. Among photosensitive drums, optical photoconductors (OPC), which are non-polluting and mass-producible, are rapidly gaining popularity compared to inorganic photoconductors such as selenium and cadmium sulfide. In addition, we have developed amorphous silicon insulators (a-
8t) has also begun to be used, and drum-shaped photoreceptors are widely used because of their 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、イレーズの各プロセスが
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とすこと
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。Further, in the process of using a photosensitive drum for electrophotography, the processes of exposure, development, transfer, cleaning, and erasing are usually repeated. This 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、管の材質と径お
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 varies somewhat depending on the material, diameter, wall thickness, etc. of the tube, but is inversely proportional to its length.
例えば、筒径φ６０．長さ２５０間のアルミ素管感光ド
ラムは基音として約６００Ｈｚの共鳴音と、その複数の
倍音とがある。これらの倍音としては、２倍音（７）１
．２ＫＨ２，４倍音の２．４ＫＨｚ、３倍音の４．８Ｋ
Ｈｚなどが出やすい倍音である。For example, cylinder diameter φ60. An aluminum tube photosensitive drum with a length of 250 mm has a resonance tone of about 600 Hz as a fundamental tone and a plurality of overtones thereof. These overtones include the 2nd overtone (7) 1
．． 2KH 2.4KHz for 2nd and 4th overtones, 4.8K for 3rd overtones
Hz 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
音を安価な手段により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。SUMMARY OF THE INVENTION An object of the present invention is to provide an electrophotographic photosensitive drum that can eliminate the resonance sound generated during cleaning using inexpensive means.
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音吸収体を充填して構成
される。The electrophotographic photosensitive drum of the present invention has a cylindrical interior filled with a sound absorber that prevents resonance due to a frequency specific to its length.
すなわち、本発明のドラムは管の両端をフランジ等によ
り蓋をしており、その中は空間となっている。この空間
か共鳴空間となり、共鳴しやすい状態になっている。本
発明はこの空間に音吸収体を充填させて共鳴音を無くす
ものであり、音吸収体としては選択性が広く、紙、プラ
スティック等の物質でもよいが、特に発泡スチロール、
ウレタンホーム等が軽量、安価、音吸収性の点で優れて
いる。That is, in the drum of the present invention, both ends of the tube are covered with flanges or the like, and there is a space inside. This space becomes a resonant space and is in a state where it is easy to resonate. The present invention eliminates resonance by filling this space with a sound absorber.The sound absorber has a wide range of selectivity and may be made of paper, plastic, or other materials, but in particular, foamed polystyrene,
Urethane foam etc. are lightweight, inexpensive, and have excellent sound absorption properties.
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、本実施例は径がφ６０゜長さ２５
０ ＋＋ｎのアルミ素管で形成した感光ドラム１の表面
の残トナーを擦り落すのにウレタンゴム等からなるクリ
ーニングブレード２を用いている。また、管の両端はフ
ラング３および４で蓋されている。本実施例はこの感光
ドラム１の内に音吸収体としての発泡スチロール片５を
充填している。As shown in Fig. 1, this embodiment has a diameter of 60° and a length of 25°.
A cleaning blade 2 made of urethane rubber or the like is used to scrape off residual toner on the surface of the photosensitive drum 1 made of a 0++n aluminum tube. Further, both ends of the tube are covered with flanges 3 and 4. In this embodiment, the photosensitive drum 1 is filled with foamed polystyrene pieces 5 as sound absorbers.
このような感光ドラム１とすることにより、６００Ｈｚ
に基音の共鳴周波数をもち、６００ト１ ｚ 、 １
、２ Ｋ Ｈｚ 、 ４ 、８ Ｋ Ｈｚの共鳴音を発
生しても、充填された発泡スチロール片５により共鳴音
を完全に無くすことができる。By using such a photosensitive drum 1, 600Hz
It has a fundamental resonant frequency of 600 to 1 z, 1
, 2 KHz, 4 KHz, 8 KHz, the filled Styrofoam pieces 5 can completely eliminate the resonance.
以上説明したように、本発明の電子写真用感光ドラムは
、筒状内部に音吸収体を入れることにより、電子写真の
プリンターや複写機の騒音、すなわ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 of electrophotographic printers and copying machines, that is, the resonance sound generated by the rubbing of cleaning blades, by inserting a sound absorber into the cylindrical interior. It has the effect that it can be eliminated.
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。
１・・・感光ドラム、２・・・クリーニングブレード、
３．４・・・フラング、５・・・発泡スチロール片。FIG. 1 is a partially cutaway diagram of an electrophotographic photosensitive drum showing an embodiment of the present invention. 1... Photosensitive drum, 2... Cleaning blade,
3.4... Flang, 5... Styrofoam piece.
Claims (1)
収体を充填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 its cylindrical interior is filled with a sound absorber that prevents resonance due to a frequency specific to its length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18117789A JPH0344689A (en) | 1989-07-12 | 1989-07-12 | Electrophotographic photosensitive drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18117789A JPH0344689A (en) | 1989-07-12 | 1989-07-12 | Electrophotographic photosensitive drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0344689A true JPH0344689A (en) | 1991-02-26 |
Family
ID=16096230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18117789A Pending JPH0344689A (en) | 1989-07-12 | 1989-07-12 | Electrophotographic photosensitive drum |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0344689A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07281556A (en) * | 1994-04-11 | 1995-10-27 | Nec Corp | Photoreceptor drum |
| KR100797452B1 (en) * | 2007-11-09 | 2008-01-24 | 이텍산업 주식회사 | Road cleaning dust prevention device |
-
1989
- 1989-07-12 JP JP18117789A patent/JPH0344689A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07281556A (en) * | 1994-04-11 | 1995-10-27 | Nec Corp | Photoreceptor drum |
| KR100797452B1 (en) * | 2007-11-09 | 2008-01-24 | 이텍산업 주식회사 | Road cleaning dust prevention device |
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