JP3568229B2 - Aluminum alloy tube for photoconductor substrate - Google Patents
Aluminum alloy tube for photoconductor substrate Download PDFInfo
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- JP3568229B2 JP3568229B2 JP09113594A JP9113594A JP3568229B2 JP 3568229 B2 JP3568229 B2 JP 3568229B2 JP 09113594 A JP09113594 A JP 09113594A JP 9113594 A JP9113594 A JP 9113594A JP 3568229 B2 JP3568229 B2 JP 3568229B2
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- Prior art keywords
- aluminum alloy
- tube
- alloy tube
- photoreceptor
- intermetallic compound
- Prior art date
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- 229910000838 Al alloy Inorganic materials 0.000 title claims description 36
- 239000000758 substrate Substances 0.000 title claims description 19
- 229910000765 intermetallic Inorganic materials 0.000 claims description 28
- 108091008695 photoreceptors Proteins 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 18
- 238000007743 anodising Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 9
- 230000003647 oxidation Effects 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- 238000005266 casting Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000010407 anodic oxide Substances 0.000 description 4
- 238000002791 soaking Methods 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910018084 Al-Fe Inorganic materials 0.000 description 1
- 229910018131 Al-Mn Inorganic materials 0.000 description 1
- 229910018192 Al—Fe Inorganic materials 0.000 description 1
- 229910018191 Al—Fe—Si Inorganic materials 0.000 description 1
- 229910018461 Al—Mn Inorganic materials 0.000 description 1
- 229910018507 Al—Ni Inorganic materials 0.000 description 1
- 229910018580 Al—Zr Inorganic materials 0.000 description 1
- 229910002551 Fe-Mn Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910019064 Mg-Si Inorganic materials 0.000 description 1
- 229910019406 Mg—Si Inorganic materials 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- QQHSIRTYSFLSRM-UHFFFAOYSA-N alumanylidynechromium Chemical compound [Al].[Cr] QQHSIRTYSFLSRM-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- Photoreceptors In Electrophotography (AREA)
Description
【０００１】
【産業上の利用分野】
この発明は、電子写真複写機、レーザビームプリンタ等の印刷装置において感光体を支持する導電性支持体として用いられる感光体基盤用アルミニウム合金管に関する。
【０００２】
【従来の技術】
上記のような感光体基盤用アルミニウム合金管は、その表面に感光体が塗工されるが、良好な感光体層を形成するためには比較的鏡面に近い表面状態であることが望まれる。また、低価格の印刷装置の普及に伴い、量産性があって製造コストの低いアルミニウム合金管が求められている。そこで、近年、比較的良好な鏡面状態が低コストで得られることから、感光体基盤用アルミニウム合金管として、アルミニウム合金を管体に押出した後、この押出素管を引抜き加工したＥＤ管が多用されている。
【０００３】
【発明が解決しようとする課題】
ところで、アルミニウム合金管と感光体との密着性の向上等を目的として、感光体の塗工前に、アルミニウム合金管に下地処理としての陽極酸化処理を行い、合金管表面に酸化皮膜を被覆形成する場合がある。
【０００４】
しかし、従来では、陽極酸化処理によって形成された酸化皮膜が透明すぎるために、感光体層の塗工後も画像に干渉縞が現れて印刷品質を低下させるという問題点があった。
【０００５】
また、前述のようなＥＤ管の製造コストをさらに下げるには引抜速度は速い方が良いが、余り速く引抜くと焼付を生じるという問題点があった。
【０００６】
この発明は、前記問題点を解消することを目的として、画像品質が良く、しかも製造に際して速い速度で引抜くことができる感光体基盤用アルミニウム合金管を提供しようとするものである。
【０００７】
【課題を解決するための手段】
この発明の感光体基盤用アルミニウム合金管は、前記目的を達成するために、アルミニウム合金からなる押出素管を引抜率３５％以上に引抜いて形成され、かつ管表面に平均粒子径２〜１５μｍの金属間化合物が３０００〜１００００個／ｍｍ２ 存在することを特徴とするものである。
【０００８】
この発明にかかる感光体基盤用アルミニウム合金管の材質は特に限定されず、Ｍｎ、Ｆｅ、Ｓｉ、Ｎｉ、Ｃｒ、Ｍｇ、Ｃｕ、Ｚｒ等を含有する各種アルミニウム合金を使用できる。これらのうちでも、引抜時に焼付きにくいという点で、特にＭｎを含有するアルミニウム合金を推奨できる。
【０００９】
前記感光体基盤用アルミニウム合金管の表面には金属間化合物が存在する。この金属間化合物は、押出素管を引抜く時に焼付きを防ぐとともに、引抜後に行う陽極酸化処理によって脱落して酸化皮膜の表面を適度に荒らしたり、皮膜中にトラップされることにより、受けた光を乱反射させ、皮膜の透明性を失わせて白っぽく見せ、干渉縞を解消する効果がある。このような効果を得るためには、金属間化合物は、一定の大きさの粒子が所定の密度で存在している必要がある。
【００１０】
即ち、前記金属間化合物は、平均粒子径（１個の粒子の平均サイズ）が２μｍ未満では引抜時の焼付防止効果に乏しくなるとともに、陽極酸化処理によって粒子が脱落したりトラップされても酸化皮膜の透明性を失わせる効果に乏しい。一方、平均粒子径が１５μｍを超えると、引抜中に割れたり脱落して表面欠陥になるおそれがあり、また陽極酸化処理時の脱落の跡が大きくなり、却って画像欠陥の原因となるため好ましくない。したがって、金属間化合物の平均粒子径は２〜１５μｍとする必要がある。金属間化合物の平均粒子径の好ましい下限値は２μｍであり、好ましい上限値は１２μｍ、さらに好ましい上限値は８μｍである。また、前記金属間化合物の数は、１ｍｍ２ あたり３０００個未満では引抜時の焼付防止効果に乏しいうえ、陽極酸化皮膜があまり白っぽっくならず干渉縞を解消する効果にも乏しい。一方、１００００個を超えて多くなると、陽極酸化処理時の粒子の脱落などが極度に増えて欠陥となる。したがって、金属間化合物の数は３０００〜１００００個／ｍｍ２ とする必要がある。金属間化合物の数の好ましい下限値は５０００個／ｍｍ２ であり、好ましい上限値は８０００個／ｍｍ２ である。
【００１１】
感光体基盤用アルミニウム合金管に前記範囲の金属間化合物を生成させるには、押出素管の材料組成、ビレットを鋳造する際の凝固時の冷却速度、ビレット鋳造後の均熱処理の有無等が関与する。例えば、ビレット鋳造時に急冷すると金属間化合物の数が少なくなる傾向にあり、鋳造後の均熱処理が不十分であると金属間化合物粒子が大きい傾向にある。例えば、通常のＤＣ鋳造により急冷することなく冷却したビレットを５８０〜６２０℃で５時間以上保持して均熱処理し、これを引抜くことによって所定の金属間化合物を生じさせることができる。
【００１２】
なお、前述のような効果を生じさせる金属間化合物の種類は、特に限定されるものではない。生成される金属間化合物は使用するアルミニウム材料によって異なり、Ａｌ−Ｆｅ系、Ａｌ−Ｆｅ−Ｓｉ系、Ａｌ−Ｍｎ系、Ａｌ−Ｆｅ−Ｍｎ系、Ａｌ−Ｎｉ系、Ａｌ−Ｆｅ−Ｎｉ系、Ａｌ−Ｃｒ系、Ａｌ−Ｚｒ系、Ｍｇ−Ｓｉ系など、いずれの金属間化合物であっても引抜時の焼付きを防止するとともに、皮膜を白っぽくして干渉縞を解消することができる。また、引抜後、アルミニウム合金管に施す陽極酸化処理方法も従来の方法と何ら変わることなく、硫酸、しゅう酸、クロム酸等により従来と同じ処理条件に従って行えば良い。
【００１３】
ところで、金属間化合物は前述のとおり陽極酸化皮膜の透明性を失わせて干渉縞を解消する効果があるが、金属間化合物の存在のみでは完全ではない。このため、この発明では引抜による合金組織の転位を利用して、陽極酸化処理時にＡｌ素地を微細にかつ均一に荒らすものとする。このことを利用して、一定以上の引抜率で押出素管を引抜くことにより管表面に多数の転位を均一に生じさせ、陽極酸化処理における管表面のエッチングを均一にして酸化皮膜を形成させる。その結果、金属間化合物および転位により、Ａｌ素地を微細かつ均一にエッチングし、皮膜を白っぽく見せて画像に干渉縞を生じさせない。この発明において、引抜率とは次の（１）式で表し、この引抜き率が高いほど転位が増して微細かつ均一に荒れた皮膜を形成することができる。
引抜率（％）＝（Ｓ０−Ｓ）／Ｓ０×１００ ……（１）
但し、Ｓ０：押出素管断面積
Ｓ ：最終引抜管断面積
前記引抜率が３５％未満では転位数が少なく均一な酸化皮膜を形成することが困難であるため、３５％以上で引抜く必要があり、特に５０％以上が好ましい。また、前記引抜率は１回の引抜きで達成する必要はなく、２回以上の引抜によっても良い。
【００１４】
【作用】
この発明に係る感光体基盤用アルミニウム合金管は、管表面に平均粒子径２〜１５μｍの金属間化合物が３０００〜１００００個／ｍｍ２ 存在するために、該アルミニウム合金管製造の際して、押出素管の引抜時に焼付きが生じにくい。
また、前記感光体基盤用アルミニウム合金管を陽極酸化処理すると、前記金属間化合物の粒子が脱落したり陽極酸化皮膜にトラップされる。さらに、前記押出管の引抜きは３５％以上の高い引抜率で行われるために、管表面に多数の転位が生じて、陽極酸化処理においてエッチングされ易くなる。このように、管表面に金属間化合物が存在し、かつ高い引抜率で引抜いて形成されることにより、感光体基盤用アルミニウム合金管の表面には、透明性の失われた白っぽい陽極酸化皮膜が形成される。
【００１５】
【実施例】
次に、この発明にかかる感光体基盤用アルミニウム合金管の具体的実施例について説明する。
【００１６】
次の各実施例および各比較例において、感光体基盤用アルミニウム合金管の材料として、Ａｌ−０．２ｗｔ％Ｆｅ−０．１ｗｔ％Ｓｉ−０．０５ｗｔ％Ｃｕ−０．６ｗｔ％Ｍｎ合金を使用した。
前記合金を通常のＤＣ鋳造または急冷凝固によってビレットを形成し、後掲の表１に示す均熱処理を行った。次いで、各ビレットを表１に示す大きさの素管に押出し、さらに押出素管を冷間で１〜２回引抜いて感光体基盤用アルミニウム合金管を製作した。引抜は、焼付きが生じないない範囲で、可能な限り速い速度で行った。これらの感光体基盤用アルミニウム合金管について、表面の金属間化合物の粒子径および１ｍｍ２ あたりの個数を測定した。表１に、ビレットの鋳造法および均熱処理方法、押出素管の寸法、引抜管の寸法、前述の（１）式により算出した引抜き率、引抜速度、金属間化合物の粒子径および個数を示す。
【００１７】
【表１】
次に、各感光体基盤用アルミニウム合金管を、１５％Ｈ２Ｓ０４、２０℃、１．２Ａ／ｄｍ２ で１７分の条件で陽極酸化処理したのち、感光体を塗工して感光ドラムを形成した。そして、該感光ドラムを印刷装置に組み込んで印刷を行い、目視により画像特性を調べた。画像特性を表１に併せて示す。
【００１９】
表１の結果から明らかなように、実施例の感光体基盤用アルミニウム合金管は高い引抜速度でも焼付かず、画像特性も良好であることを確認しえた。
【００２０】
【発明の効果】
以上説明したように、この発明の感光体基盤用アルミニウム合金管は、アルミニウム合金からなる押出素管を引抜率３５％以上に引抜いて形成され、かつ管表面に平均粒子径２〜１５μｍの金属間化合物が３０００〜１００００個／ｍｍ２ 存在するために、引抜時に焼付きにくくなり、速い速度での引抜が可能となって製造コストを下げることができる。また、前記金属間化合物の存在および高い引抜率による多数の転位の存在により、陽極酸化処理において形成される皮膜を微細かつ均一に荒らして該皮膜の透明性を失わせることができるため、画像に干渉縞を生じさせず、印刷品質を向上させることができる。[0001]
[Industrial applications]
The present invention relates to an aluminum alloy tube for a photoconductor substrate used as a conductive support for supporting a photoconductor in a printing apparatus such as an electrophotographic copying machine or a laser beam printer.
[0002]
[Prior art]
A photoreceptor is coated on the surface of the above-described aluminum alloy tube for a photoreceptor substrate, but it is desired that the surface is relatively close to a mirror surface in order to form a good photoreceptor layer. Also, with the spread of low-priced printing apparatuses, there is a demand for aluminum alloy pipes that are mass-producible and have low manufacturing costs. In recent years, ED tubes obtained by extruding an aluminum alloy into a tubular body and then drawing out the extruded raw tube are often used as aluminum alloy tubes for a photoreceptor substrate, since a relatively good mirror surface state can be obtained at a low cost in recent years. Have been.
[0003]
[Problems to be solved by the invention]
By the way, in order to improve the adhesion between the aluminum alloy tube and the photoreceptor, etc., before coating the photoreceptor, the aluminum alloy tube is anodized as a base treatment, and an oxide film is formed on the surface of the alloy tube. May be.
[0004]
However, heretofore, since the oxide film formed by the anodic oxidation treatment is too transparent, there has been a problem that interference fringes appear on the image even after the photoreceptor layer is coated, thereby deteriorating the print quality.
[0005]
Further, in order to further reduce the manufacturing cost of the ED tube as described above, it is better that the drawing speed is high, but there is a problem that if the drawing is performed too fast, seizure may occur.
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to provide an aluminum alloy tube for a photoreceptor substrate, which has a high image quality and can be drawn at a high speed during manufacturing, for the purpose of solving the above problems.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the aluminum alloy tube for a photoreceptor substrate according to the present invention is formed by drawing an extruded raw tube made of an aluminum alloy to a drawing rate of 35% or more, and has an average particle diameter of 2 to 15 μm on the tube surface. It is characterized in that there are 3000 to 10000 intermetallic compounds / mm 2 .
[0008]
The material of the aluminum alloy tube for a photoreceptor substrate according to the present invention is not particularly limited, and various aluminum alloys containing Mn, Fe, Si, Ni, Cr, Mg, Cu, Zr and the like can be used. Among them, an aluminum alloy containing Mn can be particularly recommended because it is difficult to seize at the time of drawing.
[0009]
An intermetallic compound exists on the surface of the aluminum alloy tube for the photoconductor substrate. This intermetallic compound was prevented by seizure when the extruded raw tube was pulled out, and was dropped by the anodic oxidation treatment performed after drawing to moderately roughen the surface of the oxide film or trapped in the film. It has the effect of irregularly reflecting light, losing the transparency of the film, making it look whitish, and eliminating interference fringes. In order to obtain such an effect, it is necessary for the intermetallic compound to have particles of a certain size existing at a certain density.
[0010]
That is, if the intermetallic compound has an average particle diameter (average size of one particle) of less than 2 μm, the effect of preventing seizure at the time of drawing is poor, and even if the particles fall off or are trapped by the anodic oxidation treatment, an oxide film is formed. The effect of losing transparency is poor. On the other hand, if the average particle diameter exceeds 15 μm, there is a possibility that the surface defects may be cracked or fall off during drawing, and the traces of fall-off during anodic oxidation treatment may be large, which may cause image defects. . Therefore, the average particle diameter of the intermetallic compound needs to be 2 to 15 μm. The preferred lower limit of the average particle size of the intermetallic compound is 2 μm, the preferred upper limit is 12 μm, and the more preferred upper limit is 8 μm. If the number of the intermetallic compounds is less than 3000 per 1 mm 2 , the effect of preventing seizure during drawing is poor, and the anodic oxide film is not so whitish that the effect of eliminating interference fringes is poor. On the other hand, when the number exceeds 10,000, dropout of particles during the anodizing treatment is extremely increased, resulting in a defect. Therefore, the number of intermetallic compounds needs to be 3000 to 10000 / mm 2 . A preferred lower limit of the number of intermetallic compounds is 5000 / mm 2 , and a preferred upper limit is 8000 / mm 2 .
[0011]
In order to produce the intermetallic compound in the above range in the aluminum alloy tube for the photoreceptor base, the material composition of the extruded raw tube, the cooling rate at the time of solidification when casting the billet, the presence / absence of soaking treatment after billet casting, etc. are involved. I do. For example, rapid cooling during billet casting tends to reduce the number of intermetallic compounds, and insufficient soaking after casting tends to increase intermetallic compound particles. For example, a billet cooled without quenching by ordinary DC casting is kept at 580 to 620 ° C. for 5 hours or more, soaked, and drawn out to produce a predetermined intermetallic compound.
[0012]
The type of the intermetallic compound that produces the above-described effects is not particularly limited. The generated intermetallic compound varies depending on the aluminum material used, and includes Al-Fe, Al-Fe-Si, Al-Mn, Al-Fe-Mn, Al-Ni, Al-Fe-Ni, Any intermetallic compound such as an Al-Cr-based, Al-Zr-based, or Mg-Si-based compound can prevent seizure at the time of drawing, and can make the film whitish to eliminate interference fringes. Further, the anodizing treatment applied to the aluminum alloy tube after drawing is not changed at all from the conventional method, and may be performed using sulfuric acid, oxalic acid, chromic acid or the like under the same processing conditions as the conventional method.
[0013]
As described above, the intermetallic compound has an effect of eliminating the interference fringes by losing the transparency of the anodic oxide film, but is not perfect only by the presence of the intermetallic compound. For this reason, in the present invention, the Al base is finely and uniformly roughened at the time of anodic oxidation treatment by utilizing dislocation of the alloy structure due to drawing. By utilizing this fact, a large number of dislocations are uniformly generated on the tube surface by drawing the extruded raw tube at a certain drawing rate or more, and the etching of the tube surface in the anodic oxidation treatment is made uniform to form an oxide film. . As a result, the Al base material is finely and uniformly etched by the intermetallic compound and the dislocation, so that the film looks whitish and does not cause interference fringes in the image. In the present invention, the drawing rate is represented by the following equation (1). The higher the drawing rate, the more dislocations increase and a fine and uniformly roughened film can be formed.
Drawing ratio (%) = (S 0 −S) / S 0 × 100 (1)
However, S 0 : cross-sectional area of the extruded raw pipe S: cross-sectional area of the final drawn pipe If the drawing rate is less than 35%, the number of dislocations is small and it is difficult to form a uniform oxide film. And particularly preferably 50% or more. The drawing rate does not need to be achieved by one drawing, but may be achieved by two or more drawing.
[0014]
[Action]
In the aluminum alloy tube for a photoreceptor substrate according to the present invention, since 3000 to 10,000 particles / mm 2 of an intermetallic compound having an average particle diameter of 2 to 15 μm are present on the tube surface, the aluminum alloy tube is extruded during the production of the aluminum alloy tube. Seizure is less likely to occur when pulling out the raw tube.
When the aluminum alloy tube for a photoreceptor substrate is anodized, particles of the intermetallic compound fall off or are trapped in the anodic oxide film. Further, since the extruded tube is drawn at a high drawing rate of 35% or more, a large number of dislocations are generated on the tube surface, and the tube is easily etched in the anodic oxidation treatment. As described above, since the intermetallic compound is present on the tube surface and formed by drawing at a high drawing rate, a whitish anodic oxide film having lost transparency is formed on the surface of the aluminum alloy tube for the photoconductor substrate. It is formed.
[0015]
【Example】
Next, specific examples of the aluminum alloy tube for a photoreceptor substrate according to the present invention will be described.
[0016]
In each of the following Examples and Comparative Examples, an Al-0.2 wt% Fe-0.1 wt% Si-0.05 wt% Cu-0.6 wt% Mn alloy was used as the material of the aluminum alloy tube for the photoconductor substrate. did.
The alloy was formed into a billet by ordinary DC casting or rapid solidification, and was subjected to a soaking treatment shown in Table 1 below. Next, each billet was extruded into a base tube having the size shown in Table 1, and the extruded base tube was drawn out once or twice in a cold state to produce an aluminum alloy tube for a photoreceptor substrate. The drawing was performed at a speed as fast as possible without causing seizure. With respect to these aluminum alloy tubes for a photoreceptor substrate, the particle diameter and the number per 1 mm 2 of the intermetallic compound on the surface were measured. Table 1 shows the billet casting method and the soaking method, the dimensions of the extruded raw tube, the dimensions of the drawn tube, the drawing rate, the drawing speed, and the particle diameter and the number of intermetallic compounds calculated by the above formula (1).
[0017]
[Table 1]
Next, the aluminum alloy tube for each photoconductor substrate was subjected to anodizing treatment under the conditions of 15% H 2 SO 4 , 20 ° C. and 1.2 A / dm 2 for 17 minutes, and then the photoconductor was coated and the photosensitive drum was coated. Was formed. Then, printing was performed by incorporating the photosensitive drum into a printing apparatus, and the image characteristics were visually inspected. The image characteristics are also shown in Table 1.
[0019]
As is clear from the results in Table 1, it was confirmed that the aluminum alloy tube for a photoreceptor substrate of the example did not seize even at a high drawing speed and had good image characteristics.
[0020]
【The invention's effect】
As described above, the aluminum alloy tube for a photoreceptor substrate of the present invention is formed by drawing an extruded raw tube made of an aluminum alloy at a drawing rate of 35% or more, and has a metal surface having an average particle diameter of 2 to 15 μm on the tube surface. Since there are 3000 to 10000 compounds / mm 2 of the compound, seizure becomes difficult at the time of drawing, and drawing can be performed at a high speed, so that manufacturing cost can be reduced. In addition, due to the presence of the intermetallic compound and the presence of a large number of dislocations due to a high drawing rate, the film formed in the anodic oxidation treatment can be finely and uniformly roughened, and the transparency of the film can be lost. Printing quality can be improved without causing interference fringes.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09113594A JP3568229B2 (en) | 1994-04-28 | 1994-04-28 | Aluminum alloy tube for photoconductor substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09113594A JP3568229B2 (en) | 1994-04-28 | 1994-04-28 | Aluminum alloy tube for photoconductor substrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07300645A JPH07300645A (en) | 1995-11-14 |
| JP3568229B2 true JP3568229B2 (en) | 2004-09-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09113594A Expired - Lifetime JP3568229B2 (en) | 1994-04-28 | 1994-04-28 | Aluminum alloy tube for photoconductor substrate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3568229B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7608372B2 (en) | 2004-12-13 | 2009-10-27 | Konica Minolta Business Technologies, Inc | Electrophotographic photoreceptor, electrophotographic image forming method, electrophotographic image forming apparatus, and processing cartridge |
-
1994
- 1994-04-28 JP JP09113594A patent/JP3568229B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07300645A (en) | 1995-11-14 |
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