JPH0745093Y2 - Electrophotographic photosensitive drum - Google Patents
Electrophotographic photosensitive drumInfo
- Publication number
- JPH0745093Y2 JPH0745093Y2 JP1988042491U JP4249188U JPH0745093Y2 JP H0745093 Y2 JPH0745093 Y2 JP H0745093Y2 JP 1988042491 U JP1988042491 U JP 1988042491U JP 4249188 U JP4249188 U JP 4249188U JP H0745093 Y2 JPH0745093 Y2 JP H0745093Y2
- Authority
- JP
- Japan
- Prior art keywords
- photosensitive drum
- drum tube
- tube
- cleaning blade
- electrophotographic
- 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 - Lifetime
Links
Landscapes
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は複写機やプリンタやファクシミリ等の電子写真
方式の印刷装置に用いる電子写真用感光ドラムに関す
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an electrophotographic photosensitive drum used in an electrophotographic printing apparatus such as a copying machine, a printer or a facsimile.
複写機やプリンタやファクシミリ等の電子写真方式の印
刷装置に用いる従来の感光ドラムは、電子写真方式の印
刷プロセスにおいて、用紙に転写後の感光ドラム管の表
面に残留するトナーを清掃するために、ウレタンゴム等
のクリーニングブレードによってトナーを擦り落してい
るが、この清掃動作のとき、感光ドラムに共振音が発生
する。A conventional photosensitive drum used in an electrophotographic printing apparatus such as a copying machine, a printer, or a facsimile is used in an electrophotographic printing process in order to remove toner remaining on the surface of a photosensitive drum tube after being transferred to a sheet. Although the toner is scraped off by a cleaning blade made of urethane rubber or the like, resonance noise is generated on the photosensitive drum during this cleaning operation.
上述のように、従来の電子写真方式の印刷装置に用いる
感光ドラムは、一般的な電子写真プロセスにおいて、用
紙に転写後の感光ドラム管の表面に残留するトナーを清
掃するために、ウレタンゴム等のクリーニングブレード
によってトナーを擦り落しており、感光ドラム管をクリ
ーニングブレードで擦るときに、感光ドラム管の長さに
反比例した周波数の共振音を発生する。この周波数ｆ
は、ｆ＝nc/2lHzで表わされ（ｎは正の整数、ｃは伝搬
速度、ｌは感光ドラム管の長さ）、感光ドラムを使用す
る複写機やプリンタやファクシミリ等の電子写真方式の
印刷装置の騒音の原因となっているという欠点を有して
いる。As described above, the photosensitive drum used in the conventional electrophotographic printing apparatus is made of urethane rubber or the like in order to clean the toner remaining on the surface of the photosensitive drum tube after being transferred to the paper in a general electrophotographic process. The toner is scraped off by the cleaning blade, and when the photosensitive drum tube is rubbed by the cleaning blade, a resonance sound having a frequency inversely proportional to the length of the photosensitive drum tube is generated. This frequency f
Is, f = is represented by nc / 2lH z (n is a positive integer, c is propagation velocity, l is the length of the photosensitive drum tube), a copying machine, a printer or a facsimile electrophotographic method that uses a photosensitive drum Has the drawback of causing noise in the printing device.
本考案の目的は、上述のような従来の電子写真用感光ド
ラムの欠点を解消して、簡単な構成で共振音が発生しな
いため静粛な印刷装置を得ることが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 solve the above-mentioned drawbacks of the conventional electrophotographic photosensitive drum, and to provide an electrophotographic photosensitive drum capable of obtaining a quiet printing device because resonance noise is not generated with a simple configuration. To do.
本考案の電子写真用感光ドラムは、感光ドラム管の内部
にゴム等の柔軟性のある材料で形成した防振用バンパー
を設け、これによってクリーニングブレードで擦ったと
きに生ずる振動を吸収すると共に、感光体の内部の空気
の振動の伝播も抑制することによって感光ドラムに共振
音を生じないようにしたものである。The electrophotographic photosensitive drum of the present invention is provided with an anti-vibration bumper made of a flexible material such as rubber inside the photosensitive drum tube to absorb the vibration generated when the cleaning blade rubs it. By suppressing the propagation of vibration of air inside the photoconductor, resonance noise is not generated on the photoconductor drum.
すなわち、本考案の電子写真用感光ドラムは、円筒形の
中空の感光ドラム管と、前記感光ドラム管の外側に長方
形の一方の長辺を接触させて配設したクリーニングブレ
ードと、前記感光ドラム管の内周に対向する２辺を接触
させて前記感光ドラムのほぼ全長に亘って配設した柔軟
性のある材料によって形成した長方形の板状の１個のバ
ンパーとを備えている。That is, the photosensitive drum for electrophotography of the present invention comprises a hollow cylindrical photosensitive drum tube, a cleaning blade disposed on the outside of the photosensitive drum tube so that one long side of a rectangle is in contact with the photosensitive drum tube, and the photosensitive drum tube. And one rectangular plate-shaped bumper made of a flexible material, which is disposed over substantially the entire length of the photosensitive drum so that two sides facing the inner periphery of the photosensitive drum are in contact with each other.
次に本考案の実施例について図面を参照して説明する。 Next, an embodiment of the present invention will be described with reference to the drawings.
第１図は本考案の一実施例を示す斜視図、第２図は第１
図の実施例のＸ−Ｘ線断面図である。FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG.
It is the XX sectional view taken on the line of the Example of a figure.
第１図および第２図において、１は直径60mm長さ250mm
のアルミ素管で形成した円筒状で中空の感光ドラム管で
ある。クリーニングブレード２は、長方形の形状を有し
その一方の長辺が感光ドラム管１の外周とその軸線と平
行に接触するように配設されており、感光ドラム管１が
回転することによってその上に残留しているトナーを擦
り落す役目を受持っている。1 and 2, 1 is 60 mm in diameter and 250 mm in length
It is a cylindrical and hollow photosensitive drum tube formed by the aluminum element tube. The cleaning blade 2 has a rectangular shape and is arranged such that one long side thereof is in contact with the outer circumference of the photosensitive drum tube 1 and in parallel with the axis thereof, and the cleaning blade 2 is further rotated by the rotation of the photosensitive drum tube 1. It is responsible for scraping off the residual toner.
この感光ドラム管１の内部には、長方形の板状のウレタ
ンゴム製の防振用の１個のバンパー３がおおむねその直
径の位置に設けられている。バンパー３は、感光ドラム
管１のほぼ全長に亘って配設されている。バンパー３
は、柔軟性のあるゴム等を使用し、その両長辺が感光ド
ラム管１の内周に接触するように固着されている。これ
によってクリーニングブレード２によって擦られるとき
に発生する感光ドラム管１の振動が吸収されると共に、
感光ドラム管内の空気の振動の伝播も抑制するため、感
光ドラム管１における共振音の発生を防止することがで
きる。Inside the photosensitive drum tube 1, a rectangular plate-shaped urethane rubber bumper 3 for vibration isolation is provided at a position approximately the diameter thereof. The bumper 3 is arranged over substantially the entire length of the photosensitive drum tube 1. Bumper 3
Is made of a flexible rubber or the like and is fixed so that both long sides thereof come into contact with the inner circumference of the photosensitive drum tube 1. This absorbs the vibration of the photosensitive drum tube 1 that occurs when the cleaning blade 2 rubs it, and
Since the propagation of the vibration of the air in the photosensitive drum tube is also suppressed, it is possible to prevent the generation of resonance sound in the photosensitive drum tube 1.
以上説明したように、本考案の感光ドラムは、感光ドラ
ム管の内部に、柔軟性のある材料で形成した長方形の板
状の１個のバンパーを、感光ドラム管のほぼ全長に亘っ
て設けることにより、電子写真プロセスにおける転写後
の清掃のとき、クリーニングブレードが感光ドラム管を
擦ることによって共振音を発生するのを、簡単な構成に
よってほぼ完全に防止することができるという効果があ
り、従って、コストを殆ど上昇させずに騒音の発生がな
いため静粛な電子写真方式の印刷装置が得られるという
効果がある。As described above, in the photosensitive drum of the present invention, one rectangular plate-shaped bumper made of a flexible material is provided inside the photosensitive drum tube over substantially the entire length of the photosensitive drum tube. Thus, at the time of cleaning after transfer in the electrophotographic process, it is possible to almost completely prevent the resonance noise from being generated by the cleaning blade rubbing the photosensitive drum tube with a simple configuration. There is an effect that a quiet electrophotographic printing apparatus can be obtained because the cost is hardly increased and no noise is generated.
第１図は本考案の一実施例を示す斜視図、第２図は第１
図の実施例のＸ−Ｘ線断面図である。 １…感光ドラム管、２…クリーニングブレード、３…バ
ンパー。FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG.
It is the XX sectional view taken on the line of the Example of a figure. 1 ... Photosensitive drum tube, 2 ... Cleaning blade, 3 ... Bumper.
Claims (1)
ドラム管の外側に長方形の一方の長辺を接触させて配設
したクリーニングブレードと、前記感光ドラム管の内周
に対向する２辺を接触させて前記感光ドラムのほぼ全長
に亘って配設した柔軟性のある材料によって形成した長
方形の板状の１個のバンパーとを備えることを特徴とす
る電子写真用感光ドラム。1. A cylindrical hollow photosensitive drum tube, a cleaning blade disposed on the outside of the photosensitive drum tube so that one long side of a rectangle is in contact with the photosensitive drum tube, and 2 facing the inner circumference of the photosensitive drum tube. An electrophotographic photosensitive drum, comprising: a rectangular plate-shaped bumper formed of a flexible material, which is disposed along substantially the entire length of the photosensitive drum so as to be in contact with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988042491U JPH0745093Y2 (en) | 1988-03-29 | 1988-03-29 | Electrophotographic photosensitive drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988042491U JPH0745093Y2 (en) | 1988-03-29 | 1988-03-29 | Electrophotographic photosensitive drum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01146264U JPH01146264U (en) | 1989-10-09 |
| JPH0745093Y2 true JPH0745093Y2 (en) | 1995-10-11 |
Family
ID=31268902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988042491U Expired - Lifetime JPH0745093Y2 (en) | 1988-03-29 | 1988-03-29 | Electrophotographic photosensitive drum |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0745093Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62127567U (en) * | 1986-02-05 | 1987-08-13 |
-
1988
- 1988-03-29 JP JP1988042491U patent/JPH0745093Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01146264U (en) | 1989-10-09 |
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