JP2000066427A - Aluminum non-shaped tube for photosensitive drum base body - Google Patents
Aluminum non-shaped tube for photosensitive drum base bodyInfo
- Publication number
- JP2000066427A JP2000066427A JP10237489A JP23748998A JP2000066427A JP 2000066427 A JP2000066427 A JP 2000066427A JP 10237489 A JP10237489 A JP 10237489A JP 23748998 A JP23748998 A JP 23748998A JP 2000066427 A JP2000066427 A JP 2000066427A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- length
- photosensitive drum
- cutting
- aluminum
- 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
Landscapes
- Photoreceptors In Electrophotography (AREA)
- Metal Extraction Processes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、複写機、レーザ
ビームプリンタ、ファクシミリ等の電子写真方式の出力
機器の感光ドラム基体として用いられるアルミニウム無
切削管に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aluminum non-cutting tube used as a photosensitive drum base for an electrophotographic output device such as a copying machine, a laser beam printer, and a facsimile.
【０００２】なお、この明細書において、アルミニウム
の語はアルミニウムおよびその合金の両方を含む意味で
用いる。[0002] In this specification, the term aluminum is used to include both aluminum and its alloys.
【０００３】[0003]
【従来の技術】電子写真装置における感光ドラムは、基
体となる薄肉のアルミニウム円筒管の外周面にＯＰＣ等
の感光体層を設けて形成される。かかる感光ドラム用基
体においては、優れた画像品質を得るために前記感光体
層を薄くかつ均一な厚さに形成する必要があり、そのた
め基体表面の高い平滑性が要求される。また、感光ドラ
ムは、管の撓みによって生じる回転軸方向の振れについ
ても可及的に小さいことが要求される。この振れは、管
長が長くなるほど顕著に現れる傾向がある。2. Description of the Related Art A photosensitive drum in an electrophotographic apparatus is formed by providing a photosensitive layer such as OPC on an outer peripheral surface of a thin aluminum cylindrical tube as a base. In such a photosensitive drum substrate, it is necessary to form the photoreceptor layer in a thin and uniform thickness in order to obtain excellent image quality. Therefore, a high smoothness of the substrate surface is required. In addition, the photosensitive drum is required to have as small a deflection as possible in the rotation axis direction caused by the bending of the tube. This runout tends to be more pronounced as the tube length increases.
【０００４】また、近年、画質についても従来の３６０
ｄｐｉから６００ｄｐｉ以上の高い分解能が要求され、
かつ出力の高速化が望まれている。さらに、インクジェ
ット方式やバブルジェット方式の安価なプリンタが主と
して個人ユーザーからの需要が多いのに対して、電子写
真装置は業務用出力機器としての需要が多く、Ｂ４判、
Ａ３判などの大型紙への出力も可能な長尺の感光ドラム
の需要が増大している。[0004] In recent years, the image quality of the conventional 360
High resolution from dpi to 600 dpi or more is required,
In addition, high-speed output is desired. Furthermore, while inexpensive printers of the ink jet type or bubble jet type are mainly in demand from individual users, electrophotographic apparatuses are in great demand as business output devices, and B4 size,
There is an increasing demand for long photosensitive drums that can output to large paper such as A3 size.
【０００５】このような技術背景にあって、特に長尺の
感光ドラムにおいては、高画質化ならびに高速化を達成
するために、上述した振れの低減が極めて重要になる。
具体的には、管の長さ（Ｌ）が３００mm以上のとき、振
れが（Ｌ／１０）μｍ以下のものが要求される。In such a technical background, particularly in the case of a long photosensitive drum, the reduction of the above-mentioned shake becomes extremely important in order to achieve high image quality and high speed.
Specifically, when the length (L) of the tube is 300 mm or more, a tube having a runout of (L / 10) μm or less is required.
【０００６】長尺の感光ドラム基体において高い振れ精
度を達成するために、従来は図２に示すように、回転さ
せたアルミニウム管(21)の外周面をバイト(22)で切削す
るのが一般的な方法であった。Conventionally, as shown in FIG. 2, in order to achieve high runout accuracy on a long photosensitive drum base, the outer peripheral surface of a rotated aluminum tube (21) is generally cut with a cutting tool (22). Was a typical way.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、上述の
切削による方法においては、アルミニウム管(21)の剛性
が不足していると、バイト(22)に押されて管(21)が撓ん
でしまうために、振れ精度を高めることが困難であっ
た。そこで、管(21)の剛性を高めるために厚肉の管を用
いると、切削による振れ精度の確保は容易になるが、そ
の反面感光ドラムが重くなって電子写真装置の駆動系に
負担がかかるという問題があった。However, in the above-described cutting method, if the rigidity of the aluminum pipe (21) is insufficient, the pipe (21) is bent by being pushed by the cutting tool (22). In addition, it has been difficult to increase the runout accuracy. Therefore, if a thick tube is used to increase the rigidity of the tube (21), it is easy to secure the runout accuracy by cutting, but on the other hand, the photosensitive drum becomes heavy and a load is applied to the drive system of the electrophotographic apparatus. There was a problem.
【０００８】この発明は、このような状況に鑑み、大型
紙に出力可能な長尺管であって、薄肉軽量にして振れ精
度の高い感光ドラム基体用アルミニウム無切削管を目的
とする。In view of such circumstances, an object of the present invention is to provide a long tube which can be output to a large-sized paper, and which is thin and lightweight, and has a high runout accuracy.
【０００９】[0009]
【課題を解決するための手段】前記目的を達成するため
に、この発明の感光ドラム基体用アルミニウム管は、押
出素管を引抜いた引抜管を所定長さに切断して製作され
たアルミニウム無切削管であって、切断後の管の長さ
（Ｌ）が３００mm以上であり、かつ管の長さ（Ｌ）（m
m）と肉厚（ｔ）（mm）とが、Ｌ／７００≦ｔ≦Ｌ／３
００を満足するようになされていることを特徴とする。In order to achieve the above-mentioned object, an aluminum tube for a photosensitive drum substrate according to the present invention is manufactured by cutting an extruded tube from which an extruded raw tube is drawn into a predetermined length and cutting the same. A pipe having a length (L) of 300 mm or more after cutting, and a length (L) (m
m) and thickness (t) (mm) are L / 700 ≦ t ≦ L / 3
00 is satisfied.
【００１０】この発明のアルミニウム無切削管は、図１
に示すように、押出素管(1) をダイス(11)とプラグ(13)
との間に通して先端を引抜用チャック(12)でつかみ、引
抜いて製作した引抜管(2) を３００mm以上の所要長さに
切断したものである。この方法では、その一端をダイス
(11)およびプラグ(13)によって拘束するとともに他端を
引抜用チャック(12)によって拘束し、軸方向に張力を加
えつつ成形するため、引抜管(2) は加工中に撓まず成形
され、所要長さに切断後の振れも小さくなる。引抜きの
リダクションおよび外径落とし量の設定により引抜管
(2) の肉厚を（ｔ）（mm）としたとき、引抜管(2) を長
さ（Ｌ）（mm）に切断して、Ｌ／７００≦ｔ≦Ｌ／３０
０を満足すれば、管の長さが３００mm以上になっても振
れを小さくすることができる。FIG.
Insert the extruded tube (1) into the die (11) and plug (13) as shown in
, The tip of which is gripped by a pulling chuck (12), and a drawn tube (2) manufactured by drawing is cut into a required length of 300 mm or more. In this method, one end is diced
(11) and the plug (13), and the other end is restrained by the drawing chuck (12), and formed while applying tension in the axial direction, so that the drawn tube (2) is formed without bending during processing, Runout after cutting to the required length is also reduced. Drawing tube by setting the reduction of drawing and the amount of outer diameter reduction
When the thickness of (2) is (t) (mm), the drawn tube (2) is cut into a length (L) (mm), and L / 700 ≦ t ≦ L / 30
If 0 is satisfied, the run-out can be reduced even if the length of the tube becomes 300 mm or more.
【００１１】なお、この発明は、アルミニウム無切削管
の肉厚（ｔ）を規定するものではないが、感光ドラムの
軽量化のために肉厚（ｔ）を０．６〜１．０mmの間に設
定することが好ましい。このような薄肉の管において
も、管の長さ（Ｌ）と肉厚（ｔ）との関係において上記
式を満たすようにすることにより、振れの小さい感光ド
ラム用基体用アルミニウム無切削管とすることができ
る。Although the present invention does not specify the thickness (t) of the aluminum non-cutting tube, the thickness (t) is set to 0.6 to 1.0 mm in order to reduce the weight of the photosensitive drum. It is preferable to set Even in such a thin-walled tube, by satisfying the above expression in the relationship between the length (L) and the wall thickness (t) of the tube, an aluminum non-cutting tube for a photosensitive drum base having a small deflection can be obtained. be able to.
【００１２】また、管を構成するアルミニウム材料の種
類も特に限定されるものではなく、強度、引抜加工性等
を考慮して各種アルミニウム材の中から適宜のものを選
択しようすることができる。一般的には、純アルミニウ
ム系、Ａ３０００系，Ａ６０００系等のアルミニウム展
伸材が好適に用いられる。The type of aluminum material constituting the tube is not particularly limited, either, and an appropriate one can be selected from various aluminum materials in consideration of strength, drawability, and the like. Generally, aluminum wrought materials such as pure aluminum, A3000 and A6000 are preferably used.
【００１３】上述した感光ドラム基体用アルミニウム無
切削管の製作に際し、押出素管を次の条件で引抜くこと
が好ましい。In producing the above-mentioned aluminum non-cutting tube for a photosensitive drum substrate, it is preferable to pull out the extruded raw tube under the following conditions.
【００１４】引抜速度は５〜５０ｍ／分が好ましい。５
ｍ／分未満では引抜き時の張力が小さいために引抜管
(2) の撓みを矯正する効果に乏しく、一方５０ｍ／分を
超えると、断管トラブルが増加するためである。また、
引抜管(2) の長さを２ｍ以上とすることが好ましい。引
抜時において管(2) の一端をダイス(11)およびプラグ(1
3)によって拘束するとともに他端を引抜用チャック(12)
で拘束しながら引抜くとにより管(2) に張力を与えてい
るが、２ｍ未満の引抜きでは十分な張力を与えることが
できない。The drawing speed is preferably 5 to 50 m / min. 5
If the flow rate is less than m / min, the tension at the time of drawing is small, so the drawing tube
This is because the effect of correcting the bending of (2) is poor, and if it exceeds 50 m / min, the trouble of disconnection increases. Also,
It is preferable that the length of the drawing tube (2) is 2 m or more. At the time of withdrawal, connect one end of the pipe (2) with the die (11) and plug (1).
Chuck for pulling out the other end while restrained by 3) (12)
When the tube (2) is pulled out while being restrained by the above, sufficient tension cannot be applied when the tube (2) is pulled out less than 2 m.
【００１５】この発明の感光ドラム基体用アルミニウム
無切削管は、管の長さ（Ｌ）（mm）と肉厚（ｔ）（mm）
とが、Ｌ／７００≦ｔ≦Ｌ／３００を満足するようにな
されているから、薄肉であっても撓みが少なく、回転時
の振れが小さい。The aluminum non-cutting tube for a photosensitive drum substrate of the present invention has a length (L) (mm) and a wall thickness (t) (mm) of the tube.
Are satisfied so as to satisfy L / 700 ≦ t ≦ L / 300. Therefore, even if the thickness is thin, the deflection is small, and the runout during rotation is small.
【００１６】[0016]
【実施例】図１に示すように、押出素管(1) をダイス(1
1)とプラグ(13)の間を通して管の先端を引抜用チャック
で(12)でつかみ、縮径するとともに引抜いて引抜管(2)
を製作した。前記押出素管(1) として、ＪＩＳ Ａ３０
０３−Ｈ１１２からなり、外径４０mm、肉厚１．５mmの
アルミニウム押出素管を用いて引抜き、表１に示す肉厚
（ｔ）（mm）の引抜管(2) を成形した。さらに各引抜管
(2) を表１に示す長さ（Ｌ）（mm）に切断して感光ドラ
ム用基体とした。感光ドラム用基体は、各条件について
多数製作した。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG.
Grab the tip of the pipe with the pulling chuck (12) through the gap between 1) and the plug (13), reduce the diameter and pull out the pipe (2)
Was made. The extrusion tube (1) is JIS A30
A drawn tube (2) having a wall thickness (t) (mm) shown in Table 1 was formed by using an extruded aluminum tube made of 03-H112 and having an outer diameter of 40 mm and a wall thickness of 1.5 mm. Furthermore each drawn tube
(2) was cut into the length (L) (mm) shown in Table 1 to obtain a photosensitive drum substrate. A large number of photosensitive drum substrates were manufactured for each condition.
【００１７】これらの各感光ドラム用基体について、管
の長さ（Ｌ）と肉厚（ｔ）の関係についてＬ／７００≦
ｔ≦Ｌ／３００に適合するか否かを調べるとともに、回
転時の振れを測定して振れがＬ／１０μｍ以下のものを
合格品とし、合格品の収率を求めた。これらの結果を表
１に併せて示す。Regarding the relationship between the length (L) and the thickness (t) of the tube for each of the photosensitive drum substrates, L / 700 ≦
In addition to examining whether or not t ≦ L / 300 was satisfied, the run-out during rotation was measured, and those having a run-out of L / 10 μm or less were regarded as acceptable products, and the yield of acceptable products was determined. The results are shown in Table 1.
【００１８】[0018]
【表１】 [Table 1]
【００１９】表１の結果から、Ｌ／７００≦ｔ≦Ｌ／３
００を満たす感光ドラム基体用アルミニウム無切削管
は、３００mm以上の長尺管であっても、振れが小さいこ
とを確認できた。From the results shown in Table 1, L / 700 ≦ t ≦ L / 3
It was confirmed that the aluminum non-cutting tube for a photosensitive drum substrate satisfying 00 has a small run-out even if it is a long tube of 300 mm or more.
【００２０】[0020]
【発明の効果】以上説明したように、この発明の感光ド
ラム基体用アルミニウム無切削管は、押出素管を引抜い
た引抜管を所定長さに切断して製作されたアルミニウム
管であって、切断後の管の長さ（Ｌ）が３００mm以上で
あり、かつ管の長さ（Ｌ）（mm）と肉厚（ｔ）（mm）と
が、Ｌ／７００≦ｔ≦Ｌ／３００を満足するようになさ
れているから、薄肉であっても撓みが少なく振れが小さ
い。そのため、Ｂ４判やＡ３判の大型紙へも、６００ｄ
ｐｉ以上の高画質で高速出力が可能となる。As described above, the aluminum non-cutting tube for a photosensitive drum substrate of the present invention is an aluminum tube manufactured by cutting a drawn tube from which an extruded raw tube is drawn to a predetermined length. The length (L) of the subsequent tube is 300 mm or more, and the length (L) (mm) and the thickness (t) (mm) of the tube satisfy L / 700 ≦ t ≦ L / 300. As a result, even if it is thin, there is little deflection and little run-out. For this reason, 600d paper can be used for B4 and A3 large paper.
High-speed output with high image quality of pi or more is possible.
【図１】この発明の感光ドラム基体用アルミニウム無切
削管の製造方法を示す縦断面図である。FIG. 1 is a longitudinal sectional view showing a method for manufacturing an aluminum non-cutting tube for a photosensitive drum substrate of the present invention.
【図２】従来の感光ドラム基体用アルミニウム管の振れ
を矯正する方法を示す斜視図である。FIG. 2 is a perspective view showing a conventional method for correcting deflection of an aluminum tube for a photosensitive drum substrate.
１…押出素管 ２…引抜管 11…ダイス 12…引抜用チャック 13…プラグ 1. Extruded raw tube 2. Drawing tube 11 ... Die 12 ... Drawing chuck 13 ... Plug
Claims (1)
切断して製作されたアルミニウム管であって、切断後の
管の長さ（Ｌ）が３００mm以上であり、かつ管の長さ
（Ｌ）（mm）と肉厚（ｔ）（mm）とが、Ｌ／７００≦ｔ
≦Ｌ／３００を満足するようになされていることを特徴
とする感光ドラム基体用アルミニウム無切削管。1. An aluminum tube manufactured by cutting a drawn tube from which an extruded raw tube is drawn into a predetermined length, wherein the length (L) of the cut tube is 300 mm or more, and (L) (mm) and wall thickness (t) (mm) are L / 700 ≦ t
An aluminum non-cutting tube for a photosensitive drum base, which satisfies ≦ L / 300.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10237489A JP2000066427A (en) | 1998-08-24 | 1998-08-24 | Aluminum non-shaped tube for photosensitive drum base body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10237489A JP2000066427A (en) | 1998-08-24 | 1998-08-24 | Aluminum non-shaped tube for photosensitive drum base body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000066427A true JP2000066427A (en) | 2000-03-03 |
Family
ID=17016090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10237489A Pending JP2000066427A (en) | 1998-08-24 | 1998-08-24 | Aluminum non-shaped tube for photosensitive drum base body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000066427A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008292882A (en) * | 2007-05-28 | 2008-12-04 | Ricoh Co Ltd | Base body for electrophotographic photoreceptor, method and apparatus for manufacturing the same and electrophotographic photoreceptor |
| JP2008292912A (en) * | 2007-05-28 | 2008-12-04 | Ricoh Co Ltd | Base body for electrophotographic photoreceptor, method and apparatus for manufacturing the same and electrophotographic photoreceptor |
| JP2012013929A (en) * | 2010-06-30 | 2012-01-19 | Ricoh Co Ltd | Electrophotographic photoreceptor and manufacturing method thereof |
| JP2014038137A (en) * | 2012-08-10 | 2014-02-27 | Fuji Xerox Co Ltd | Electrophotographic photoreceptor, image forming apparatus, and process cartridge |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0348255A (en) * | 1989-01-19 | 1991-03-01 | Fuji Xerox Co Ltd | Electrophotographic sensitive body |
| JPH03149180A (en) * | 1989-11-07 | 1991-06-25 | Furukawa Alum Co Ltd | Manufacture of thin aluminum pipe for copying machine drum |
| JPH07199505A (en) * | 1993-12-29 | 1995-08-04 | Showa Alum Corp | Production of aluminum pipe for photoreceptor substrate |
| JPH086281A (en) * | 1994-06-16 | 1996-01-12 | Mitsubishi Chem Corp | Production of base body for electrophotographic photoreceptor |
| JPH09319127A (en) * | 1996-05-29 | 1997-12-12 | Mitsubishi Chem Corp | Production of substrate for electrophotographic photoreceptor |
| JPH09319126A (en) * | 1996-05-29 | 1997-12-12 | Mitsubishi Chem Corp | Production of substrte for electrophotographic photoreceptor |
| JPH10123737A (en) * | 1996-10-25 | 1998-05-15 | Fuji Xerox Co Ltd | Production of electrophotographic photoreceptor, electrophotographic photoreceptor, apparatus for production of electrophotographic photoreceptor and image forming method |
-
1998
- 1998-08-24 JP JP10237489A patent/JP2000066427A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0348255A (en) * | 1989-01-19 | 1991-03-01 | Fuji Xerox Co Ltd | Electrophotographic sensitive body |
| JPH03149180A (en) * | 1989-11-07 | 1991-06-25 | Furukawa Alum Co Ltd | Manufacture of thin aluminum pipe for copying machine drum |
| JPH07199505A (en) * | 1993-12-29 | 1995-08-04 | Showa Alum Corp | Production of aluminum pipe for photoreceptor substrate |
| JPH086281A (en) * | 1994-06-16 | 1996-01-12 | Mitsubishi Chem Corp | Production of base body for electrophotographic photoreceptor |
| JPH09319127A (en) * | 1996-05-29 | 1997-12-12 | Mitsubishi Chem Corp | Production of substrate for electrophotographic photoreceptor |
| JPH09319126A (en) * | 1996-05-29 | 1997-12-12 | Mitsubishi Chem Corp | Production of substrte for electrophotographic photoreceptor |
| JPH10123737A (en) * | 1996-10-25 | 1998-05-15 | Fuji Xerox Co Ltd | Production of electrophotographic photoreceptor, electrophotographic photoreceptor, apparatus for production of electrophotographic photoreceptor and image forming method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008292882A (en) * | 2007-05-28 | 2008-12-04 | Ricoh Co Ltd | Base body for electrophotographic photoreceptor, method and apparatus for manufacturing the same and electrophotographic photoreceptor |
| JP2008292912A (en) * | 2007-05-28 | 2008-12-04 | Ricoh Co Ltd | Base body for electrophotographic photoreceptor, method and apparatus for manufacturing the same and electrophotographic photoreceptor |
| JP2012013929A (en) * | 2010-06-30 | 2012-01-19 | Ricoh Co Ltd | Electrophotographic photoreceptor and manufacturing method thereof |
| JP2014038137A (en) * | 2012-08-10 | 2014-02-27 | Fuji Xerox Co Ltd | Electrophotographic photoreceptor, image forming apparatus, and process cartridge |
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