JP2003255759A - Electrophotographic photoreceptor - Google Patents
Electrophotographic photoreceptorInfo
- Publication number
- JP2003255759A JP2003255759A JP2002053272A JP2002053272A JP2003255759A JP 2003255759 A JP2003255759 A JP 2003255759A JP 2002053272 A JP2002053272 A JP 2002053272A JP 2002053272 A JP2002053272 A JP 2002053272A JP 2003255759 A JP2003255759 A JP 2003255759A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- flange
- fitting
- adhesive
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は円筒状支持基体の外
周面に有機材料を主成分とする感光層が形成され、その
開口端部にギヤ付き樹脂フランジを備えた電子写真感光
体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotographic photosensitive member having a cylindrical support base on which a photosensitive layer containing an organic material as a main component is formed, and a resin flange with a gear provided at an opening end thereof.
【０００２】[0002]
【従来の技術】電子写真感光体は円筒状の導電性支持基
体上に光導電性を有する感光層を備えた感光ドラムとこ
のドラムの両端にそれぞれ合成樹脂を主材料とするギヤ
無しフランジ、平歯ギヤまたは斜歯ギヤ付きフランジ等
のいずれかを強固に結合させたものからなる。2. Description of the Related Art An electrophotographic photosensitive member includes a photosensitive drum having a photoconductive layer having photoconductivity on a cylindrical conductive support substrate, and a gearless flange and a flat plate made of synthetic resin as main materials at both ends of the drum. It is formed by firmly connecting either a toothed gear or a flange with a helical gear.
【０００３】この電子写真感光体は、複写機、プリン
タ、ファクシミリなどの電子写真装置またはこれらの装
置に搭載されるプロセスカートリッジに装着されて画像
形成を行う際には、前記ギヤ（歯車）を介して装置側の
回転駆動力を感光ドラムに安定して確実に繰り返し伝達
する必要があるため、ギヤの脱落または結合のゆるみ等
がないように一体成形されたギヤ付き樹脂フランジは感
光ドラムの両端に嵌合されて強固に結合される。This electrophotographic photosensitive member is mounted on an electrophotographic apparatus such as a copying machine, a printer or a facsimile or a process cartridge mounted on these apparatuses to form an image through the gear (gear). Since it is necessary to stably and reliably transmit the rotational driving force of the device side to the photosensitive drum repeatedly, the resin flanges with gears integrally molded to prevent the gears from falling off or the couplings from loosening are attached to both ends of the photosensitive drum. It is fitted and firmly connected.
【０００４】この電子写真感光体は円滑な回転を可能に
するために、回転軸を前記樹脂フランジに設けられた中
心孔により支持して回転可能な構成にして装置に装着さ
れる。また、感光ドラムの両端に結合された樹脂フラン
ジのいずれか一方を図４の斜視図に示すような斜歯ギヤ
付きフランジ１８とすることにより、回転駆動力と共
に、一方の軸方向へ働く力のモーメントを発生させ、回
転時に感光体が軸方向にブレることを防いでいる。In order to enable smooth rotation of the electrophotographic photosensitive member, the rotating shaft is supported by a central hole provided in the resin flange and is rotatably mounted on the apparatus. Further, by using either one of the resin flanges connected to both ends of the photosensitive drum as a flange 18 with a bevel gear as shown in the perspective view of FIG. 4, the rotational driving force and the force acting in one axial direction can be reduced. A moment is generated to prevent the photoconductor from shaking in the axial direction during rotation.
【０００５】電子写真装置における画像形成機能は電子
写真感光体を回転させながら、その外周面近傍上に設け
られる電子写真プロセス部材による機能、すなわち、感
光体表面の帯電、露光、現像、転写、（定着）、クリー
ニング、除電等を１サイクルとする電子写真プロセス機
能を順に奏することにより実行される。さらにこれらの
電子写真プロセス機能が正常に実行されるには、アルミ
ニウム合金などからなる感光体ドラムの支持基体をステ
ンレス鋼などからなる回転軸を介して前記装置側のアー
ス電位に落とす必要がある。そのために前記樹脂フラン
ジは導電性を備える必要がある。The image forming function in the electrophotographic apparatus is a function of an electrophotographic process member provided near the outer peripheral surface of the electrophotographic photosensitive member while rotating the electrophotographic photosensitive member, that is, charging, exposure, development, transfer of the photosensitive member surface, ( (Fixing), cleaning, charge removal, etc. are performed by sequentially performing electrophotographic process functions in one cycle. Further, in order for these electrophotographic process functions to be executed normally, it is necessary to drop the support base of the photosensitive drum made of aluminum alloy or the like to the ground potential on the side of the apparatus through the rotary shaft made of stainless steel or the like. Therefore, the resin flange needs to have conductivity.
【０００６】さらに、前記各電子写真プロセスは１サイ
クルが終了すると、最初の帯電プロセスに戻るので、感
光体を連続的に回転させることにより、繰り返し連続し
て画像を形成することができる。この画像形成プロセス
が繰り返し良好に行われるには装置側の回転駆動力が繰
り返し良好に感光体に伝達されることが肝要である。Further, in each of the electrophotographic processes, when one cycle is completed, the process returns to the initial charging process. Therefore, by continuously rotating the photoconductor, images can be continuously formed repeatedly. In order for this image forming process to be repeatedly and favorably performed, it is essential that the rotational driving force on the apparatus side be repeatedly and favorably transmitted to the photoconductor.
【０００７】たとえば、感光ドラムに結合されている前
記樹脂フランジがドラムから脱落またはゆるみなどによ
って結合異常の状態になると、回転停止および装置の機
能停止もしくはジッタなどの画像障害発生という重大事
故となるので、フランジと感光ドラムの結合状態の異常
事態は装置の長期信頼性を確保する上で、あってはなら
ない重要な技術的課題である。[0007] For example, if the resin flange connected to the photosensitive drum is dropped or loosened from the drum to cause an abnormal connection, it causes a serious accident such as rotation stop, device stoppage, or image failure such as jitter. The abnormal state of the connection between the flange and the photosensitive drum is an important technical issue that must not be solved in order to ensure long-term reliability of the device.
【０００８】[0008]
【発明が解決しようとする課題】一方、電子写真装置や
電子写真感光体のコストダウンへの要望から、従来フラ
ンジの材料として多く採用されていたアルミニウム合金
材料から、前述のように安価な樹脂材料へ切り替えられ
るようになってきている。On the other hand, from the demand for cost reduction of electrophotographic devices and electrophotographic photoreceptors, aluminum alloy materials, which have been widely adopted as materials for flanges, have been replaced by inexpensive resin materials as described above. It is becoming possible to switch to.
【０００９】安価なフランジとしては、樹脂材料に価
格、機械的強度、寸法精度などの点から、ポリカーボネ
ート（ＰＣ）樹脂またはポリオキシメチレン（ＰＯＭ）
樹脂などの絶縁樹脂を用い、金属板等の導電性材料を組
み合わせて導電性機能を確保したものまたは樹脂に導電
性粉末材料を添加した導電性樹脂からなるフランジが多
く採用される。As an inexpensive flange, polycarbonate (PC) resin or polyoxymethylene (POM) is used as a resin material in view of price, mechanical strength, dimensional accuracy and the like.
A flange made of an insulating resin such as a resin and a conductive material such as a metal plate that has a conductive function or a conductive resin obtained by adding a conductive powder material to the resin is often used.
【００１０】感光ドラムと前記樹脂フランジの結合は、
前記アルミニウム製支持基体の両端部の内径とフランジ
嵌合部の外径との関係をしまりばめの関係になるように
設計すると共に、接着剤による接着力を有効にすべくフ
ランジの嵌合部４に、図４に示すように接着剤溜りとも
言うべき溝１７を形成することにより接着力を高めたも
のが多く用いられる。The connection between the photosensitive drum and the resin flange is
The flange supporting portion is designed so that the inner diameter of both ends of the aluminum support base and the outer diameter of the flange fitting portion are in a tight fit relationship, and the adhesive force of the adhesive is effective. In FIG. 4, a groove 17 which is also called an adhesive reservoir as shown in FIG.
【００１１】しかしながら、このようなしまりばめと接
着剤による結合には以下のような問題がある。しまりば
めの関係を有するフランジは支持基体の開口端部に嵌め
難く組み立て時の作業性が悪い。接着剤による接着力は
接着剤の偏在等によるバラツキ防止のために接着剤溜り
とも言うべき溝１７が形成されていてもなお、バラツキ
が避けられない。特に膨張係数の関係から低温低湿の温
度環境における繰り返し印字等の長期信頼性に問題が発
生し易い。感光ドラムの両端には、そのいずれか一方の
端部にギヤ無しフランジまたは平歯ギヤ付きフランジが
嵌合され、他端部には斜歯ギヤ付きフランジ１８が嵌合
される。斜歯ギヤには前述のように回転駆動力と軸方向
モーメント応力とが加えられるので、特に斜歯ギヤ付き
フランジ１８では平歯ギヤ付きフランジよりも感光ドラ
ムとの結合部において前述のような問題が発生し易い。However, there are the following problems in the connection by such an interference fit and an adhesive. A flange having a tight fit is difficult to fit into the open end of the supporting base and the workability during assembly is poor. Even if the groove 17 which should be called an adhesive reservoir is formed in order to prevent the adhesive strength due to the adhesive from being unevenly distributed due to uneven distribution of the adhesive, the unevenness cannot be avoided. In particular, due to the expansion coefficient, long-term reliability such as repeated printing in a low temperature and low humidity environment is likely to occur. A flange without a gear or a flange with a spur gear is fitted to either end of the photosensitive drum, and a flange 18 with a helical gear is fitted to the other end. Since the rotational driving force and the axial moment stress are applied to the bevel gear as described above, the above-mentioned problem is more likely to occur in the flange 18 with the bevel gear than in the flange with the spur gear, at the joint with the photosensitive drum. Is likely to occur.
【００１２】以上説明した問題点に鑑み、本発明の目的
は、フランジの導電性円筒状支持基体への嵌合等の作業
性がよく、接着剤による接着力が高く、繰り返し印刷後
においても斜歯ギヤ付きフランジが結合された感光ドラ
ムからフランジの脱落や結合のゆるみの発生しにくい長
期信頼性の高い電子写真感光体の提供である。In view of the above-mentioned problems, the object of the present invention is that the workability such as fitting of the flange to the conductive cylindrical support base is good, the adhesive strength by the adhesive is high, and the slant can be obtained even after repeated printing. (EN) Provided is a long-term highly reliable electrophotographic photosensitive member in which the flange does not drop off or the connection is loosened from the photosensitive drum to which the flange with a toothed gear is connected.
【００１３】[0013]
【課題を解決するための手段】請求項１記載の本発明に
よれば、前記目的は、導電性円筒状支持基体の外周面に
光導電性材料を含む感光層が形成された感光ドラムと、
この感光ドラムの開口端部内に嵌合される嵌合部と回転
軸を支持する中心孔を有する円形壁部と前記開口端部外
に位置し回転駆動力と回転軸方向応力を前記ドラムに伝
達する斜歯ギヤ部とを一体成形してなる樹脂フランジを
備える電子写真感光体において、前記樹脂フランジの嵌
合部の平均表面粗さＲａが２．５μｍ以上である電子写
真感光体とすることにより、達成される。According to a first aspect of the present invention, there is provided a photosensitive drum, wherein a photosensitive layer containing a photoconductive material is formed on an outer peripheral surface of a conductive cylindrical supporting base,
A fitting portion fitted into the opening end of the photosensitive drum, a circular wall portion having a central hole for supporting the rotation shaft, and a rotation driving force and a stress in the rotation axis direction, which are located outside the opening end, are transmitted to the drum. In an electrophotographic photosensitive member including a resin flange integrally formed with a helical gear portion, the average surface roughness Ra of the fitting portion of the resin flange is 2.5 μm or more. Is achieved.
【００１４】請求項２記載の本発明によれば、嵌合部
が、導電性円筒状支持基体の開口端部内径としまりばめ
の関係になる嵌合外径部と接着後に接着剤の層を形成す
る溝部が複数形成された接着部を備える請求項１記載の
電子写真感光体とすることが好ましい。According to the second aspect of the present invention, the fitting portion has a layer of an adhesive after being bonded to the fitting outer diameter portion which has a tight fit relationship with the inner diameter of the opening end portion of the conductive cylindrical support base. It is preferable that the electrophotographic photosensitive member according to claim 1 is provided with an adhesive portion in which a plurality of groove portions that form is formed.
【００１５】請求項３記載の本発明によれば、接着部の
最大外径が嵌合外径部の外径より小径である請求項２記
載の電子写真感光体とすることがより好ましい。According to the present invention of claim 3, it is more preferable that the electrophotographic photosensitive member according to claim 2 has a maximum outer diameter of the adhesive portion smaller than an outer diameter of the fitting outer diameter portion.
【００１６】請求項４記載の本発明によれば、樹脂フラ
ンジがポリカーボネート樹脂またはポリオキシメチレン
樹脂を主成分とする請求項１乃至３のいずれか一項に記
載の電子写真感光体とすることがよりいっそう好まし
い。According to a fourth aspect of the present invention, the electrophotographic photosensitive member according to any one of the first to third aspects, in which the resin flange contains a polycarbonate resin or a polyoxymethylene resin as a main component. Even more preferable.
【００１７】請求項５記載の本発明によれば、感光ドラ
ムと樹脂フランジ嵌合部がシアノアクリレート系接着剤
により接着嵌合されている請求項１乃至４のいずれか一
項に記載の電子写真感光体とすることが望ましい。According to a fifth aspect of the present invention, the electrophotography according to any one of the first to fourth aspects, wherein the photosensitive drum and the resin flange fitting portion are adhesively fitted with a cyanoacrylate adhesive. It is desirable to use a photoreceptor.
【００１８】[0018]
【発明の実施の形態】以下、本発明の電子写真感光体に
関し、図を用いて詳細に説明する。本発明はその要旨を
超えない限り、以下に説明する実施例に限定されるもの
ではない。BEST MODE FOR CARRYING OUT THE INVENTION The electrophotographic photosensitive member of the present invention will be described below in detail with reference to the drawings. The present invention is not limited to the examples described below as long as the gist thereof is not exceeded.
【００１９】図１は本発明にかかる電子写真感光体１０
の一部を破断した斜視図を示す。図２は本発明にかかる
電子写真感光体１０のいずれか一方の開口端部に圧入さ
れる斜歯ギヤ付きフランジ１５の断面図を示す。（ａ）
は軸方向に直角の方向から見たフランジであって、感光
ドラム１１に嵌合したことを示す断面図、（ｂ）は軸方
向の感光ドラム１１内部側から見たフランジの平面図で
ある。図３は本発明にかかる斜歯ギヤ付きフランジ１５
の斜視図である。FIG. 1 shows an electrophotographic photoreceptor 10 according to the present invention.
The perspective view which fractured | ruptured a part of FIG. FIG. 2 is a cross-sectional view of the flange 15 with the helical gear which is press-fitted into one of the opening ends of the electrophotographic photosensitive member 10 according to the present invention. (A)
4B is a cross-sectional view showing the flange as seen from the direction perpendicular to the axial direction, and showing the fitting into the photosensitive drum 11, and FIG. 6B is a plan view of the flange seen from the inside of the photosensitive drum 11 in the axial direction. FIG. 3 is a flange 15 with a bevel gear according to the present invention.
FIG.
【００２０】図１に示す電子写真感光体１０において、
破断線１２により囲まれる破断部では円筒状の導電性支
持基体１の外周面に感光層２を被覆した感光ドラム１１
の内部および断面を示し、この感光ドラム１１の両開口
端部にギヤ付き樹脂フランジ１５、３１を嵌合して結合
させたことを示している。In the electrophotographic photosensitive member 10 shown in FIG.
At the break portion surrounded by the break line 12, the photosensitive drum 11 in which the outer peripheral surface of the cylindrical conductive support substrate 1 is covered with the photosensitive layer 2
The inside and the cross-section of FIG. 3 show that the resin flanges 15 and 31 with gears are fitted and joined to both open ends of the photosensitive drum 11.
【００２１】この支持基体１は感光体の電極としての役
目と同時に感光層２の支持体となっており、アルミニウ
ム、ステンレス鋼、ニッケルなどの金属、あるいはガラ
ス、樹脂等に導電処理を施したものなどを採用すること
ができる。The supporting substrate 1 serves as an electrode of the photosensitive member and at the same time serves as a supporting member for the photosensitive layer 2. The supporting substrate 1 is made of a metal such as aluminum, stainless steel or nickel, or glass or resin which has been subjected to a conductive treatment. Can be adopted.
【００２２】この支持基体１の外周面に被覆される感光
層２としては、単層感光層または電荷発生層および電荷
輸送層などからなる積層感光層があるが、必要に応じ
て、支持基体１と感光層２の間には下引層を設けても良
い。この下引層は、支持基体１から感光層２への不要な
電荷の注入防止、支持基体表面の欠陥被覆、感光層の接
着性の向上等の目的で必要に応じて設けられる。下引層
の樹脂バインダーとして、環状エーテルまたは低級アル
コールに可溶な、ガゼイン、アクリル樹脂、酢酸ビニル
樹脂、ポリビニルホルマール樹脂、ポリウレタン樹脂、
エポキシ樹脂、ポリエステル樹脂、メラミン樹脂、ポリ
ブチラール樹脂、ポリビニルアセタール樹脂、ポリアミ
ド樹脂およびこれらの共重合体などを適宜組み合わせて
使用することが可能である。またこれらの樹脂中に分散
させる金属酸化物微粒子はそれ自体に導電性の無いもの
として、ＳｉＯ2、ＴｉＯ2、Ｉｎ2Ｏ3、ＺｒＯ2、Ａｌ2
Ｏ3等を用いることが可能である。またこれら金属酸化
物微粒子は分散安定性や感光特性向上のために、さらに
ポリシロキサンやアルコキシシランやシランカップリン
グ剤で表面処理を行った微粒子を用いることもできる。The photosensitive layer 2 coated on the outer peripheral surface of the supporting substrate 1 may be a single-layer photosensitive layer or a laminated photosensitive layer including a charge generating layer and a charge transporting layer. An undercoat layer may be provided between the photosensitive layer 2 and the photosensitive layer 2. This undercoat layer is provided as necessary for the purpose of preventing the injection of unnecessary charges from the supporting substrate 1 to the photosensitive layer 2, covering defects on the surface of the supporting substrate, and improving the adhesiveness of the photosensitive layer. As a resin binder for the undercoat layer, soluble in cyclic ether or lower alcohol, casein, acrylic resin, vinyl acetate resin, polyvinyl formal resin, polyurethane resin,
Epoxy resin, polyester resin, melamine resin, polybutyral resin, polyvinyl acetal resin, polyamide resin and copolymers thereof can be used in appropriate combination. In addition, the metal oxide fine particles dispersed in these resins are not electrically conductive by themselves, and SiO 2 , TiO 2 , In 2 O 3 , ZrO 2 , Al 2
It is possible to use O 3 or the like. Further, as these metal oxide fine particles, fine particles further surface-treated with polysiloxane, alkoxysilane or a silane coupling agent may be used for improving dispersion stability and photosensitivity.
【００２３】電荷発生層としては電荷発生物質を真空蒸
着した層または有機光導電性物質の粒子を樹脂バインダ
ー中に分散させた塗液を塗布して得られる層などがあ
る。電荷発生層の機能は光を受容し電荷を発生すること
である。また電荷発生層は電荷発生効率が高いことと同
時に発生した電荷の電荷輸送層への注入性に電界依存性
が少なく低電界でも注入効率の良いことが望まれ、電荷
発生物質を主体としてこれに電荷輸送物質などを添加し
て使用することもある。Examples of the charge generation layer include a layer in which a charge generation substance is vacuum-deposited or a layer obtained by applying a coating liquid in which particles of an organic photoconductive substance are dispersed in a resin binder. The function of the charge generation layer is to receive light and generate charges. In addition, it is desirable that the charge generation layer has high charge generation efficiency, and at the same time that the injection property of the generated charges into the charge transport layer has little electric field dependency and good injection efficiency even in a low electric field. A charge transport material or the like may be added for use.
【００２４】電荷発生物質としては無金属フタロシアニ
ン、チタニルフタロシアニン、スズフタロシアニン等の
フタロシアニン系顔料、アゾ顔料、アントアントロン顔
料、ペリレン顔料、ペリノン顔料、スクアリリウム顔
料、チアピリリウム顔料、キナクリドン顔料などを用い
ることができ、またこれらの顔料を組み合わせて用いて
もよい。As the charge generating substance, phthalocyanine-based pigments such as metal-free phthalocyanine, titanyl phthalocyanine, tin phthalocyanine, azo pigments, anthanthrone pigments, perylene pigments, perinone pigments, squarylium pigments, thiapyrylium pigments and quinacridone pigments can be used. Also, these pigments may be used in combination.
【００２５】樹脂バインダ−としては、ポリカ−ボネ−
ト樹脂、ポリエステル樹脂、ポリアミド樹脂、ポリウレ
タン樹脂、エポキシ樹脂、ポリビニルブチラール樹脂、
ポリビニルアセタール樹脂、塩化ビニル系樹脂、フェノ
キシ樹脂、シリコン樹脂、メタクリル酸エステル樹脂お
よびこれらの共重合体などを適宜組み合わせて使用する
ことが可能である。As the resin binder, polycarbonate is used.
Resin, polyester resin, polyamide resin, polyurethane resin, epoxy resin, polyvinyl butyral resin,
It is possible to use a polyvinyl acetal resin, a vinyl chloride resin, a phenoxy resin, a silicone resin, a methacrylic acid ester resin, a copolymer thereof, or the like in an appropriate combination.
【００２６】電荷輸送層は電荷輸送物質と樹脂バインダ
ーを溶剤に溶解させた塗布液をシールコート法もしくは
浸漬塗布法により成膜することで構成される。電荷輸送
物質の一例としては、ヒドラゾン化合物、スチリル化合
物、ピラゾリン化合物、ピラゾロン化合物、オキサジア
ゾール化合物、アリールアミン化合物、ベンジジン化合
物、スチルベン化合物、ブタジエン化合物及びポリビニ
ルカルバゾールなどがあり、その他に電荷輸送性ポリマ
ーおよび樹脂バインダーと電荷輸送物質の共重合体ポリ
マー等を使用することも可能である。The charge transport layer is formed by forming a coating solution in which a charge transport substance and a resin binder are dissolved in a solvent by a seal coating method or a dip coating method. Examples of the charge transport material include hydrazone compounds, styryl compounds, pyrazoline compounds, pyrazolone compounds, oxadiazole compounds, arylamine compounds, benzidine compounds, stilbene compounds, butadiene compounds and polyvinylcarbazole, and other charge transport polymers. It is also possible to use a copolymer of a resin binder and a charge transport material, or the like.
【００２７】また前記電荷輸送物質を分散させる樹脂バ
インダーとしては、ポリカーボネート樹脂、ポリエステ
ル樹脂、ポリスチレン樹脂、メタクリル酸エステルの重
合体および共重合体などを含んでもよい。樹脂バインダ
ーは電荷輸送物質との相溶性、分散性が良くなる組み合
わせとし、かつ電荷輸送層として機械的、化学的および
電気的安定性および電荷発生層との密着性が確保される
ように形成することが好ましい。また電荷輸送層の膜厚
は実用的に必要とされる表面電位を実現するために１０
〜５０μｍの範囲が好ましい。The resin binder in which the charge transport material is dispersed may include a polycarbonate resin, a polyester resin, a polystyrene resin, a methacrylic acid ester polymer and a copolymer. The resin binder is a combination that improves compatibility and dispersibility with the charge transport material, and is formed so as to secure mechanical, chemical and electrical stability as the charge transport layer and adhesion with the charge generation layer. It is preferable. The thickness of the charge transport layer is set to 10 in order to realize the surface potential practically required.
The range of ˜50 μm is preferable.
【００２８】この感光ドラム１１両端の開口端部には図
１、２に示すように、感光ドラムと中心孔５により支持
される回転軸（図示せず）との電気的導通を確保するた
めに、ドラム内面と回転軸とにそれぞれ接触部９，８に
て接触するアース板６が取り付けられた斜歯ギヤ付き樹
脂フランジ１５と、平歯ギヤ３１付き樹脂フランジがそ
れぞれ嵌合部４を円筒状支持基体１内部に圧入して強固
に接着されている。この斜歯ギヤ付きフランジ１５は斜
歯ギヤ部３と感光ドラムに挿入される嵌合部４と回転軸
を支持する中心孔５を備えており、嵌合部の表面は平均
表面粗さＲａが２．５μｍ以上に加工されている。In order to secure electrical connection between the photosensitive drum and the rotary shaft (not shown) supported by the central hole 5, as shown in FIGS. , A resin flange 15 with a bevel gear and a resin flange 15 with a spur gear 31 each having a grounding plate 6 in contact with the inner surface of the drum and the rotating shaft at the contact portions 9 and 8 and a spur gear 31 having a cylindrical fitting portion 4. It is press-fitted into the support base 1 and firmly adhered thereto. This bevel gear geared flange 15 is provided with a bevel gear portion 3, a fitting portion 4 to be inserted into the photosensitive drum, and a central hole 5 for supporting the rotating shaft, and the surface of the fitting portion has an average surface roughness Ra. It is processed to 2.5 μm or more.
【００２９】斜歯ギヤ付き樹脂フランジ１５としては、
成形性、成形精度、機械的強度、価格等を考慮するとポ
リオキシメチレン樹脂またはポリカーボネート樹脂の射
出成形による一体成形が好ましい。この樹脂フランジ１
５と組み合わされるアース板６はリン青銅板またはステ
ンレス鋼板等の打ち抜きにより成形され、樹脂フランジ
１５に固着される。このようにして作製された樹脂フラ
ンジ１５と前述した感光ドラム１１は、前述のようにフ
ランジの嵌合部４の平均表面粗さを２．５μｍ以上とし
たので、強固に接着圧入され、かつ電気的にもアース板
６により接続されているので、装置側の回転駆動力が斜
歯ギヤ部３に加えられると、確実に感光ドラム１１に伝
達され、また、感光ドラム１１の電位は回転軸を介して
装置側のアース電位に落とされる。特にフランジの嵌合
部を嵌合外径部と、より小径の接着部とに分けた斜歯ギ
ヤ付きフランジを用いた電子写真感光体ではフランジの
嵌合の作業性を向上させることができる。As the resin flange 15 with a bevel gear,
In consideration of moldability, molding accuracy, mechanical strength, price, etc., integral molding by injection molding of polyoxymethylene resin or polycarbonate resin is preferable. This resin flange 1
The ground plate 6 to be combined with 5 is formed by punching out a phosphor bronze plate, a stainless steel plate or the like, and is fixed to the resin flange 15. Since the resin flange 15 thus manufactured and the photosensitive drum 11 described above have the average surface roughness of the fitting portion 4 of the flange of 2.5 μm or more as described above, they are firmly bonded and press-fitted, and are electrically connected. Since the ground plate 6 is also connected, the rotational driving force on the device side is surely transmitted to the photosensitive drum 11 when applied to the bevel gear portion 3, and the potential of the photosensitive drum 11 is applied to the rotary shaft. It is dropped to the earth potential of the device side through. In particular, in an electrophotographic photosensitive member using a flange with a helical gear in which the fitting portion of the flange is divided into a fitting outer diameter portion and a smaller diameter bonding portion, workability of fitting the flange can be improved.
【００３０】[0030]
【実施例】（感光ドラムの作製）ＪＩＳ６０６３に規定
されるアルミニウム合金からなり、外径３０ｍｍφ、内
径２８．５ｍｍφ、長さ２６０．５ｍｍの円筒状支持基
体の外周面に下引層として、アルコール可溶性ポリアミ
ド系樹脂（ＣＭ−８０００ 東レ（株）製）にアミノシ
ラン処理された酸化チタン微粒子をメタノール／ジクロ
ロメタン混合溶剤で分散させた塗布液からの浸漬塗布膜
を１００℃で３０分乾燥して１μｍ厚に形成した。EXAMPLES (Production of Photosensitive Drum) A cylindrical support base made of an aluminum alloy defined by JIS6063 and having an outer diameter of 30 mmφ, an inner diameter of 28.5 mmφ and a length of 260.5 mm is used as a subbing layer on the outer peripheral surface thereof, and is alcohol-soluble. A dip coating film from a coating liquid prepared by dispersing aminosilane-treated titanium oxide fine particles in a polyamide resin (CM-8000 Toray Co., Ltd.) with a methanol / dichloromethane mixed solvent was dried at 100 ° C. for 30 minutes to a thickness of 1 μm. Formed.
【００３１】電荷発生層は、チタニルフタロシアニンを
ポリビニルブチラール樹脂（積水化学製 ＢＸ−１）に
ジクロロメタン溶剤に分散させた塗布液から浸漬塗布に
より成膜し、８０℃で１５分乾燥して、０．２μｍ厚と
した。The charge generation layer is formed by dip coating from a coating solution in which titanyl phthalocyanine is dispersed in a polyvinyl butyral resin (BX-1 manufactured by Sekisui Chemical Co., Ltd.) in a dichloromethane solvent, dried at 80 ° C. for 15 minutes, and then dried. The thickness was 2 μm.
【００３２】電荷輸送層は、下記化学式（１）で示され
るスチリル化合物１重量部および下記化学式（２）（ｎ
は重合度を表し、１万〜１０万から適宜選ばれる）に示
されるポリカーボネート樹脂（パンライトＬ１２２５、
帝人化成（株）製）１重量部をジクロロメタン１０重量
部に溶解し、この溶液を上記電荷発生層上に塗布し、乾
燥することにより、電荷輸送層を形成した。乾燥後の膜
厚は２０μｍであった。The charge transport layer comprises 1 part by weight of a styryl compound represented by the following chemical formula (1) and the following chemical formula (2) (n).
Represents the degree of polymerization, and is a polycarbonate resin (Panlite L1225, which is appropriately selected from 10,000 to 100,000).
1 part by weight of Teijin Kasei Co., Ltd. was dissolved in 10 parts by weight of dichloromethane, and this solution was applied onto the charge generation layer and dried to form a charge transport layer. The film thickness after drying was 20 μm.
【００３３】[0033]
【化１】 [Chemical 1]
【００３４】[0034]
【化２】 [Chemical 2]
【００３５】なお、本発明では、支持基体と感光層の材
料については、感光体として求められる種々の電気特性
を満たすようにさまざまに変更することができ、上記の
材料に限定されるものではない。In the present invention, the materials for the supporting substrate and the photosensitive layer can be variously modified so as to satisfy various electric characteristics required for the photoconductor, and are not limited to the above materials. .
【００３６】（樹脂フランジの作製）ポリオキシメチレ
ン（ＰＯＭ）樹脂材料の射出成形により、図３の斜視図
に示す形状の斜歯ギヤ付き樹脂フランジ１５を一体成形
により作製した。この樹脂フランジ１５は嵌合部４内に
許容誤差を含めて外径２８．５６〜２８．６２ｍｍφの
嵌合外径部４１を有し、感光ドラムの嵌合内径（寸法範
囲２８．５０〜２８．５４ｍｍφ）とは、いわゆる、し
まりばめの関係にされている。嵌合部４のうち、前記嵌
合外径部以外の接着部４２は、その外径を許容誤差を含
めて２８．４６〜２８．５６ｍｍφのように、嵌合外径
部４１より少し小さくされているので、アース板６の感
光ドラム内面との接触部９による挿入抵抗はあるもの
の、嵌合部４の感光ドラム１１への挿入をし易くしてい
る。また接着部４２の表面上の接着剤も嵌合外径部４１
の表面よりは厚く付き易い。さらにこの接着部４２の外
周面にはさらに幅２ｍｍ、長さ７ｍｍ、深さ０．５ｍｍ
の接着剤溜りとなる溝部１７が複数設けられている。こ
のように接着部４２は外径を小さくされていることと前
記溝部１７による効果とが相俟って、この接着部４２に
は層状に形成された接着剤が嵌合外径部４１より多く付
着することになるので、フランジと感光ドラムの接着力
の向上または接着力のバラツキ防止に有効となる。この
嵌合部４はさらに下記実験例において詳細を説明するよ
うに、平均表面粗さＲａ２．５μｍ以上の表面粗さに処
理されている。この処理はギヤ部をマスクした状態で、
よく知られているサンドブラストを適宜施すことにより
得られる。(Production of Resin Flange) A resin flange 15 with a helical gear having the shape shown in the perspective view of FIG. 3 was integrally produced by injection molding of a polyoxymethylene (POM) resin material. The resin flange 15 has a fitting outer diameter portion 41 having an outer diameter of 28.56 to 28.62 mmφ in the fitting portion 4 including a tolerance, and a fitting inner diameter of the photosensitive drum (size range 28.50 to 28). .54 mmφ) has a so-called tight fit relationship. In the fitting portion 4, the adhesive portion 42 other than the fitting outer diameter portion has an outer diameter slightly smaller than the fitting outer diameter portion 41, such as 28.46 to 28.56 mmφ including an allowable error. Therefore, although there is an insertion resistance due to the contact portion 9 of the ground plate 6 with the inner surface of the photosensitive drum, the fitting portion 4 can be easily inserted into the photosensitive drum 11. In addition, the adhesive on the surface of the adhesive portion 42 is also used for the fitting outer diameter portion 41.
It is thicker and easier to stick than the surface of. Further, the outer peripheral surface of the adhesive portion 42 has a width of 2 mm, a length of 7 mm, and a depth of 0.5 mm.
A plurality of groove portions 17 serving as the adhesive reservoir are provided. Thus, the adhesive portion 42 has a smaller outer diameter, and the effect of the groove portion 17 is combined, so that the adhesive portion 42 has more layered adhesive than the fitting outer diameter portion 41. Since they adhere to each other, they are effective in improving the adhesive force between the flange and the photosensitive drum or preventing the adhesive force from varying. The fitting portion 4 is further processed to have a surface roughness with an average surface roughness Ra of 2.5 μm or more, as will be described in detail in the following experimental example. In this process, with the gear part masked,
It can be obtained by appropriately performing well-known sandblasting.
【００３７】さらに外径が３０．０ｍｍφ、軸方向長さ
１０ｍｍの斜歯ギヤ部３と外径５ｍｍφの回転軸が通る
中心孔５を備え、円形壁部１６が斜歯ギヤ部の中間に形
成されている。Further, a helical gear portion 3 having an outer diameter of 30.0 mmφ and a length in the axial direction of 10 mm and a central hole 5 through which a rotary shaft having an outer diameter of 5 mmφ passes are provided, and a circular wall portion 16 is formed in the middle of the helical gear portion. Has been done.
【００３８】前記嵌合部４の感光ドラム側の端面には図
２、３に示すようなアース板６が固着されている。この
アース板６は、別途作製されたリン青銅を主成分とする
弾性材料が用いられ、アース板６に形成されている固定
用孔７に、予め前記各樹脂フランジ１５に形成されてい
る樹脂突起を挿入し、熱圧着することによりアース板６
と樹脂フランジ１５を固定する。この固定部は必要に応
じて、その位置や数を変えてもよい。A ground plate 6 as shown in FIGS. 2 and 3 is fixed to the end surface of the fitting portion 4 on the photosensitive drum side. The ground plate 6 is made of a separately prepared elastic material containing phosphor bronze as a main component, and has resin protrusions previously formed on the resin flanges 15 in the fixing holes 7 formed in the ground plate 6. Ground plate 6 by inserting and thermocompression bonding
And the resin flange 15 are fixed. The position and the number of the fixing portions may be changed as needed.
【００３９】前記アース板６は０．２ｍｍ厚のバネ弾性
を有するリン青銅板を材料として、打ち抜きにより作製
した。アース板６の材料としては、リン青銅板の他にス
テンレス鋼板を用いてもよい。The earth plate 6 was made by punching out a 0.2 mm thick phosphor bronze plate having spring elasticity. As the material of the ground plate 6, a stainless steel plate may be used instead of the phosphor bronze plate.
【００４０】樹脂フランジ１５の樹脂材料としては、前
述のＰＯＭ樹脂の他に、ポリカーボネート樹脂を用いる
こともできる。ポリカーボネート樹脂は前記ＰＯＭ樹脂
より熱膨張係数が小さく、強度も大きいので、同じ内径
の感光ドラムであっても、しまりばめの関係となる嵌合
外径部の外径は異なる。ポリカーボネート樹脂はＰＯＭ
樹脂より高価であるので、コスト的にはＰＯＭ樹脂が多
く用いられる。As the resin material of the resin flange 15, a polycarbonate resin can be used in addition to the POM resin described above. Since the polycarbonate resin has a smaller coefficient of thermal expansion and a larger strength than the POM resin, the outer diameters of the fitting outer diameter portions having a tight fit relationship are different even if the photosensitive drums have the same inner diameter. Polycarbonate resin is POM
Since it is more expensive than resin, POM resin is often used in terms of cost.
【００４１】（実験例１〜６）画像形成装置の実機内で
実使用上必要な回転駆動トルクは３．８Ｎ・ｍである。
実使用上想定される環境条件に対し、下記のような常温
常湿、低温低湿、高温高湿の３環境条件について、嵌合
部の表面粗さを変えて種々のフランジの結合状態とした
場合について、各最大回転駆動トルク値を測定し、前記
実使用上必要な回転駆動トルクの３．８Ｎ・ｍとの関係
を調べた。(Experimental Examples 1 to 6) The rotational drive torque required for practical use in the actual machine of the image forming apparatus is 3.8 N · m.
When the various flanges are connected by changing the surface roughness of the mating part under the following three environmental conditions of normal temperature and normal humidity, low temperature and low humidity, and high temperature and high humidity, in comparison with the environmental conditions assumed in actual use. For each of the above, the maximum rotational drive torque value was measured, and the relationship with the rotational drive torque of 3.8 N · m necessary for the actual use was examined.
【００４２】嵌合部の平均表面粗さＲａが０．５μｍ、
１．０μｍ、１．５μｍ、２．０μｍ、２．５μｍ、
３．０μｍとなる６種類の斜歯ギヤ付きフランジを各３
０個づつ計１８０個用意し、感光ドラムの開口端部の内
面にシアノアクリレート系接着剤（ロックタイト４０３
日本ロックタイト社製）をそれぞれ同量塗布し、各フ
ランジをそれぞれ嵌めて接着した。接着後２４時間常温
常湿（２５℃、４０％）で放置した後、常温常湿（２５
℃、４０％）、低温低湿（１０℃、２０％）、高温高湿
（３５℃、８０％）の３環境で、初期の最大回転駆動ト
ルク値を測定した。The average surface roughness Ra of the fitting portion is 0.5 μm,
1.0 μm, 1.5 μm, 2.0 μm, 2.5 μm,
3 types of flanges with 6 types of bevel gears with 3.0 μm each
A total of 180 pieces of 0 pieces were prepared, and a cyanoacrylate adhesive (Loctite 403 was formed on the inner surface of the opening end of the photosensitive drum.
Nihon Loctite Co., Ltd.) was applied in the same amount, and each flange was fitted and bonded. After the adhesive is left at room temperature and normal humidity (25 ° C, 40%) for 24 hours, the normal temperature and normal humidity (25%
The initial maximum rotational drive torque value was measured in three environments of low temperature and low humidity (10 ° C, 20%) and high temperature and high humidity (35 ° C, 80%).
【００４３】実験結果として、表１に前記嵌合部表面粗
さの６種類と３環境条件の場合について、各１０本毎の
平均の最大回転駆動トルク値を示す。なお、平均表面粗
さの測定には、東京精密（株）製のＳＵＲＦＣＯＭ５５
３Ａを用いた。As an experimental result, Table 1 shows the average maximum rotational drive torque value for each of the 10 types of surface roughness of the fitting portion and 3 environmental conditions. For the measurement of the average surface roughness, SURFCOM55 manufactured by Tokyo Seimitsu Co., Ltd.
3A was used.
【００４４】さらに表１の結果に基き、嵌合部の平均表
面粗さＲａが２．０以下のフランジは実際の画像形成装
置における実使用で必要な感光ドラムの回転駆動トルク
値である３．８Ｎ・ｍに達しないことが判明したので、
初期の回転駆動トルク値が３．８Ｎ・ｍ以上である平均
表面粗さＲａが２．１μｍ以上の場合に付いて長期的信
頼性を確かめるために、下記実験を行った。Further, based on the results of Table 1, the flange having the average surface roughness Ra of the fitting portion of 2.0 or less is the rotational driving torque value of the photosensitive drum required for actual use in the actual image forming apparatus. Since it was determined that it would not reach 8 Nm,
The following experiment was conducted in order to confirm the long-term reliability in the case where the initial rotational driving torque value is 3.8 N · m or more and the average surface roughness Ra is 2.1 μm or more.
【００４５】嵌合部の平均表面粗さＲａが２．１μｍ、
２．２μｍ、２．３μｍ、２．４μｍ、２．５μｍ、
３．０μｍとなる６種類の斜歯ギヤ付きフランジを各３
０個づつ計１８０個用意し、感光ドラムの開口端部の内
面にシアノアクリレート系接着剤（ロックタイト４０３
日本ロックタイト社製）をそれぞれ同量塗布し、各フ
ランジをそれぞれ嵌めて接着した。長期信頼性試験にお
いては、常温常湿（２５℃、４０％）の環境で２４時間
放置後、支持基体とフランジの嵌合が各材料の熱膨張係
数の観点から最も厳しいと思われる低温低湿（１０℃、
２０％）の環境における初期と、同環境中において市販
のプリンタにより３万枚連続印字（または印刷）後の最
大回転駆動トルク値を測定した。その結果を表２に示
す。The average surface roughness Ra of the fitting portion is 2.1 μm,
2.2 μm, 2.3 μm, 2.4 μm, 2.5 μm,
3 types of flanges with 6 types of bevel gears with 3.0 μm each
A total of 180 pieces of 0 pieces were prepared, and a cyanoacrylate adhesive (Loctite 403 was formed on the inner surface of the opening end of the photosensitive drum.
Nihon Loctite Co., Ltd.) was applied in the same amount, and each flange was fitted and bonded. In the long-term reliability test, after being left for 24 hours in an environment of normal temperature and normal humidity (25 ° C, 40%), the fitting of the supporting base and the flange is considered to be the most severe from the viewpoint of the thermal expansion coefficient of each material. 10 ℃,
20%), and the maximum rotational drive torque value was measured after the continuous printing (or printing) of 30,000 sheets by a commercially available printer in the same environment. The results are shown in Table 2.
【００４６】[0046]
【表１】 [Table 1]
【００４７】[0047]
【表２】 [Table 2]
【００４８】表１の結果より、前記実験例において作製
した電子写真感光体では、斜歯ギヤ付きフランジの嵌合
部の平均表面粗さＲａを２．５μｍ以上とした場合に、
前記３環境のいずれの環境にもよらず、初期的には３．
８Ｎ・ｍ以上の最大回転駆動トルクが得られるが、同Ｒ
ａを２．０μｍ以下とした場合は初期的にも最大回転駆
動トルク３．８Ｎ・ｍを得られないことがわかる。From the results shown in Table 1, in the electrophotographic photosensitive member manufactured in the above-mentioned experimental example, when the average surface roughness Ra of the fitting portion of the flange with the helical gear was 2.5 μm or more,
Initially, regardless of any of the above three environments, 3.
Maximum rotational drive torque of 8 N ・ m or more can be obtained.
It can be seen that when a is 2.0 μm or less, the maximum rotational drive torque of 3.8 N · m cannot be obtained even in the initial stage.
【００４９】表２の結果から、前記実験例において作製
した電子写真感光体では、斜歯ギヤ付きフランジの嵌合
部の平均表面粗さＲａを２．１μｍ以上とした場合に、
初期的には３．８Ｎ・ｍ以上の最大回転駆動トルクの得
られることがわかるが、３万枚連続印字後の長期信頼性
試験でも、３．８Ｎ・ｍ以上の最大回転駆動トルクを得
るには平均表面粗さＲａを２．５μｍとする必要のある
ことが分かる。From the results shown in Table 2, in the electrophotographic photosensitive member manufactured in the above experimental example, when the average surface roughness Ra of the fitting portion of the flange with the helical gear was 2.1 μm or more,
Initially, it was found that the maximum rotational drive torque of 3.8 Nm or more was obtained, but even in the long-term reliability test after continuous printing of 30,000 sheets, the maximum rotational drive torque of 3.8 Nm or more was obtained. Shows that the average surface roughness Ra needs to be 2.5 μm.
【００５０】上記実験例では樹脂材料として、ＰＯＭ樹
脂を用いたが、ポリカーボネート樹脂を用いた場合で
も、平均表面粗さＲａとの関係では、同様の結果が得ら
れることを別途確認した。Although the POM resin was used as the resin material in the above experimental example, it was separately confirmed that the same result was obtained in relation to the average surface roughness Ra even when the polycarbonate resin was used.
【００５１】[0051]
【発明の効果】本発明によれば、導電性円筒状支持基体
の外周面に光導電性材料を含む感光層が形成された感光
ドラムと、この感光ドラムの開口端部内に嵌合される嵌
合部と回転軸を支持する中心孔を有する円形壁部と前記
開口端部外に位置し回転駆動力と回転軸方向応力を前記
ドラムに伝達する斜歯ギヤ部とを一体成形してなる樹脂
フランジを備える電子写真感光体において、前記樹脂フ
ランジの嵌合部の平均表面粗さＲａが２．５μｍ以上で
ある電子写真感光体としたので、フランジの導電性円筒
状支持基体への嵌合等の作業性がよく、接着剤との接着
力が高く、繰り返し印刷後においても斜歯ギヤ付きフラ
ンジが結合された感光ドラムからフランジの脱落や結合
のゆるみの発生しにくい長期信頼性の高い電子写真感光
体を提供することができる。According to the present invention, a photosensitive drum in which a photosensitive layer containing a photoconductive material is formed on the outer peripheral surface of a conductive cylindrical supporting substrate, and a fitting fit in the opening end of the photosensitive drum. A resin formed by integrally molding a circular wall portion having a central hole for supporting a joint portion and a rotating shaft, and a bevel gear portion located outside the opening end portion and transmitting a rotational driving force and a stress in the rotating shaft direction to the drum. In the electrophotographic photosensitive member having a flange, the fitting surface of the resin flange is an electrophotographic photosensitive member having an average surface roughness Ra of 2.5 μm or more, so that the flange is fitted to the conductive cylindrical supporting substrate. The workability is high, the adhesive strength with the adhesive is high, and even after repeated printing, the flange does not come off from the photosensitive drum to which the flange with the bevel gear is attached, or the attachment is not loosened. Providing a photoconductor It can be.
【図１】本発明にかかる電子写真感光体の一部破断斜視
図FIG. 1 is a partially cutaway perspective view of an electrophotographic photosensitive member according to the present invention.
【図２】本発明にかかる電子写真感光体に嵌合される斜
歯ギヤ付きフランジの断面図FIG. 2 is a cross-sectional view of a flange with a helical gear fitted to an electrophotographic photosensitive member according to the present invention.
【図３】本発明にかかる電子写真感光体に嵌合される斜
歯ギヤ付きフランジの斜視図FIG. 3 is a perspective view of a flange with helical gears fitted to the electrophotographic photosensitive member according to the present invention.
【図４】従来の電子写真感光体に嵌合される斜歯ギヤ付
きフランジの斜視図FIG. 4 is a perspective view of a flange with a helical gear fitted to a conventional electrophotographic photosensitive member.
１ 導電性円筒状支持基体 ２ 感光層 ３ 斜歯ギヤ部 ４ 嵌合部 ５ 中心孔 １０ 電子写真感光体 １１ 感光ドラム １５ 斜歯ギヤ付きフランジ １６ 円形壁部 １７ 溝部 ４１ 嵌合外径部 ４２ 接着部 1 Conductive cylindrical support substrate 2 Photosensitive layer 3 Bevel gear section 4 Fitting part 5 center hole 10 Electrophotographic photoreceptor 11 Photosensitive drum 15 Flange with helical gear 16 circular wall 17 Groove 41 Mating outer diameter part 42 Adhesive part
Claims (5)
性材料を含む感光層が形成された感光ドラムと、この感
光ドラムの開口端部内に嵌合される嵌合部と回転軸を支
持する中心孔を有する円形壁部と前記開口端部外に位置
し回転駆動力と回転軸方向応力を前記ドラムに伝達する
斜歯ギヤ部とを一体成形してなる樹脂フランジとを備え
る電子写真感光体において、前記樹脂フランジの嵌合部
の平均表面粗さＲａが２．５μｍ以上であることを特徴
とする電子写真感光体。1. A photosensitive drum in which a photosensitive layer containing a photoconductive material is formed on an outer peripheral surface of a conductive cylindrical supporting base, a fitting portion fitted in an opening end portion of the photosensitive drum, and a rotary shaft. An electronic photograph including a circular wall portion having a supporting central hole and a resin flange formed outside the opening end portion and integrally formed with a bevel gear portion for transmitting a rotational driving force and a stress in a rotational axis direction to the drum. In the photoconductor, the electrophotographic photoconductor characterized in that the fitting surface of the resin flange has an average surface roughness Ra of 2.5 μm or more.
端部内径としまりばめの関係になる嵌合外径部と接着後
に接着剤の層を形成する溝部が複数形成された接着部を
備えることを特徴とする請求項１記載の電子写真感光
体。2. A plurality of groove portions for forming a layer of an adhesive after bonding the fitting portion with the fitting outer diameter portion having a close fit relationship with the inner diameter of the opening end portion of the conductive cylindrical supporting base. The electrophotographic photosensitive member according to claim 1, further comprising an adhesive portion.
り小径であることを特徴とする請求項２記載の電子写真
感光体。3. The electrophotographic photosensitive member according to claim 2, wherein the maximum outer diameter of the adhesive portion is smaller than the outer diameter of the fitting outer diameter portion.
たはポリオキシメチレン樹脂を主成分とすることを特徴
とする請求項１乃至３のいずれか一項に記載の電子写真
感光体。4. The electrophotographic photosensitive member according to claim 1, wherein the resin flange contains a polycarbonate resin or a polyoxymethylene resin as a main component.
ノアクリレート系接着剤により接着嵌合されていること
を特徴とする請求項１乃至４のいずれか一項に記載の電
子写真感光体。5. The electrophotographic photosensitive member according to claim 1, wherein the photosensitive drum and the resin flange fitting portion are adhesively fitted with a cyanoacrylate adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002053272A JP2003255759A (en) | 2002-02-28 | 2002-02-28 | Electrophotographic photoreceptor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002053272A JP2003255759A (en) | 2002-02-28 | 2002-02-28 | Electrophotographic photoreceptor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003255759A true JP2003255759A (en) | 2003-09-10 |
Family
ID=28664742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002053272A Pending JP2003255759A (en) | 2002-02-28 | 2002-02-28 | Electrophotographic photoreceptor |
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| Country | Link |
|---|---|
| JP (1) | JP2003255759A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009155480A (en) * | 2007-12-27 | 2009-07-16 | Asahi Kasei Chemicals Corp | Conductive polyacetal resin composition, its manufacturing method, and molded body thereof |
| JP2009269996A (en) * | 2008-05-07 | 2009-11-19 | Asahi Kasei Chemicals Corp | Conductive polyacetal resin composition and molded product |
| US7680435B2 (en) | 2006-01-26 | 2010-03-16 | Ricoh Company, Ltd. | Flange, flange processing device, and method of processing flange |
| JP2010085649A (en) * | 2008-09-30 | 2010-04-15 | Canon Inc | Photosensitive drum unit and electrophotographic device |
| US20130287441A1 (en) * | 2012-04-27 | 2013-10-31 | Mitsubishi Chemical Corporation | Process for producing end member, process for producing photo conductor drum unit, end member, and photo conductor drum unit |
| JP2014006342A (en) * | 2012-06-22 | 2014-01-16 | Mitsubishi Chemicals Corp | Method of manufacturing photoreceptor unit and photoreceptor unit |
| JP7469988B2 (en) | 2020-08-07 | 2024-04-17 | シャープ株式会社 | Photoconductor drum, process unit and image forming apparatus |
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2002
- 2002-02-28 JP JP2002053272A patent/JP2003255759A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7680435B2 (en) | 2006-01-26 | 2010-03-16 | Ricoh Company, Ltd. | Flange, flange processing device, and method of processing flange |
| JP2009155480A (en) * | 2007-12-27 | 2009-07-16 | Asahi Kasei Chemicals Corp | Conductive polyacetal resin composition, its manufacturing method, and molded body thereof |
| JP2009269996A (en) * | 2008-05-07 | 2009-11-19 | Asahi Kasei Chemicals Corp | Conductive polyacetal resin composition and molded product |
| JP2010085649A (en) * | 2008-09-30 | 2010-04-15 | Canon Inc | Photosensitive drum unit and electrophotographic device |
| US20130287441A1 (en) * | 2012-04-27 | 2013-10-31 | Mitsubishi Chemical Corporation | Process for producing end member, process for producing photo conductor drum unit, end member, and photo conductor drum unit |
| JP2014029462A (en) * | 2012-04-27 | 2014-02-13 | Mitsubishi Chemicals Corp | Method for manufacturing end member, method for manufacturing photoreceptor drum unit, end member, and photoreceptor drum unit |
| US9092004B2 (en) | 2012-04-27 | 2015-07-28 | Mitsubishi Chemical Corporation | Process for producing end member, process for producing photo conductor drum unit, end member, and photo conductor drum unit |
| JP2014006342A (en) * | 2012-06-22 | 2014-01-16 | Mitsubishi Chemicals Corp | Method of manufacturing photoreceptor unit and photoreceptor unit |
| JP7469988B2 (en) | 2020-08-07 | 2024-04-17 | シャープ株式会社 | Photoconductor drum, process unit and image forming apparatus |
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