JP2009288492A - Electrophotographic photoreceptor - Google Patents

Electrophotographic photoreceptor Download PDF

Info

Publication number
JP2009288492A
JP2009288492A JP2008140590A JP2008140590A JP2009288492A JP 2009288492 A JP2009288492 A JP 2009288492A JP 2008140590 A JP2008140590 A JP 2008140590A JP 2008140590 A JP2008140590 A JP 2008140590A JP 2009288492 A JP2009288492 A JP 2009288492A
Authority
JP
Japan
Prior art keywords
photosensitive drum
peripheral surface
flange gear
fitting portion
outer peripheral
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.)
Granted
Application number
JP2008140590A
Other languages
Japanese (ja)
Other versions
JP5214334B2 (en
Inventor
Kiyofumi Hiroi
清文 廣井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tigers Polymer Corp
Original Assignee
Tigers Polymer Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tigers Polymer Corp filed Critical Tigers Polymer Corp
Priority to JP2008140590A priority Critical patent/JP5214334B2/en
Publication of JP2009288492A publication Critical patent/JP2009288492A/en
Application granted granted Critical
Publication of JP5214334B2 publication Critical patent/JP5214334B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an adhesive from protruding to a surface of a photoreceptor drum while enhancing the precision of an electrophotographic photoreceptor wherein a flange gear provided with a gear for driving is integrally fixed to an end part of the cylindrical photoreceptor drum having a photosensitive layer formed on the surface thereof. <P>SOLUTION: The flange gear is configured so as to have a boss portion allowing a center shaft to be fitted thereto, a disk-shaped web portion, a cylindrical external fitting portion extending from an outer peripheral part of the web portion toward the photoreceptor drum, and a gear portion provided to be integrated with the outer peripheral part of the web portion, and a groove is formed in an inner peripheral surface of the external fitting portion, and the inner peripheral surface of the external fitting portion is externally fitted to an outer peripheral surface of the photoreceptor drum. Furthermore, in the case that an earth plate is attached in the photoreceptor drum, the earth plate is attached so as to come into contact with the inner peripheral surface of the photoreceptor drum in a section wherein the external fitting portion of the flange gear is externally fitted to the outer peripheral surface of the photoreceptor drum. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は電子写真印刷装置に使用される電子写真感光体に関する。特に円筒状の感光ドラムの端部に、合成樹脂製のフランジギアを高精度に取り付けた電子写真感光体に関する。 The present invention relates to an electrophotographic photosensitive member used in an electrophotographic printing apparatus. In particular, the present invention relates to an electrophotographic photosensitive member in which a synthetic resin flange gear is attached to an end portion of a cylindrical photosensitive drum with high accuracy.

近年、電子写真技術が各種プリンターやファクシミリ、コピー装置などに広く利用されている。そして、電子写真技術の中核となる電子写真感光体としては、その表面に感光層を形成した円筒状の感光ドラムの端部に、駆動用の歯車を設けたフランジギアを一体に固定したものが使用される。ここでいうフランジギアとは、ボスやウェブ、リム、歯部などにより構成される歯車の外周部に、円筒状のドラム嵌合部（フランジと俗称される）が一体に設けられたギアのことである。 In recent years, electrophotographic technology has been widely used for various printers, facsimiles, copiers and the like. The electrophotographic photosensitive member that is the core of the electrophotographic technology is one in which a flange gear provided with a driving gear is integrally fixed to the end of a cylindrical photosensitive drum having a photosensitive layer formed on the surface thereof. used. The flange gear here is a gear in which a cylindrical drum fitting portion (commonly called a flange) is integrally provided on the outer peripheral portion of a gear constituted by a boss, a web, a rim, a tooth portion, and the like. It is.

特許文献１には、合成樹脂製のフランジギアのドラム嵌合部を、感光ドラムの内周に嵌合（内嵌）させて、そのような電子写真感光体とすることが開示されている。また、これら電子写真感光体には、高い精度が要求されているために、特許文献１に開示された技術においては、フランジギアのドラム嵌合部とギア部の間にスリットを設けて、ドラム嵌合部の圧入によるギア部の変形を未然に防止し、精度を高めることが記載されている。
特開２０００−８９６０８号公報 Patent Document 1 discloses that an electrophotographic photosensitive member is obtained by fitting (internally fitting) a drum fitting portion of a synthetic resin flange gear to the inner periphery of a photosensitive drum. In addition, since these electrophotographic photosensitive members are required to have high accuracy, in the technique disclosed in Patent Document 1, a slit is provided between the drum fitting portion and the gear portion of the flange gear, and the drum It is described that the deformation of the gear portion due to the press-fitting of the fitting portion is prevented in advance and the accuracy is improved.
JP 2000-89608 A

しかしながら、特許文献１に記載の電子写真感光体においては、図６に示すようにフランジギア７のドラム嵌合部７１を感光ドラム２の内周面に内嵌させてフランジギアを一体化することに起因して、以下のような問題があった。すなわち、電子写真感光体の支持シャフトから感光ドラム表面に至る間の寸法精度を高めるためには、フランジギア７そのものの精度を高めることが必要である他に、感光ドラム２の内外周両面の精度（それぞれの面単独の精度や互いの同心度などの相対的な精度）を高める必要があった。そのために、従来技術においては、感光ドラム２において、外周面の精度を高めるだけでなく、内周面にも切削加工を施すなどして精度を高める加工が必要であり、感光ドラムの製造が複雑で、コスト高なものとなっていた。また、得られる電子写真感光体の精度も、感光ドラムの内外周面の間の精度の影響を受けて精度が低下するため、より一層の精度向上が望まれていた。 However, in the electrophotographic photosensitive member described in Patent Document 1, the flange gear is integrated by fitting the drum fitting portion 71 of the flange gear 7 to the inner peripheral surface of the photosensitive drum 2 as shown in FIG. Due to this, there were the following problems. That is, in order to increase the dimensional accuracy between the support shaft of the electrophotographic photosensitive member and the surface of the photosensitive drum, it is necessary to increase the accuracy of the flange gear 7 itself, and the accuracy of both the inner and outer peripheral surfaces of the photosensitive drum 2. It was necessary to increase (accuracy of each surface alone and relative accuracy such as concentricity of each other). For this reason, in the prior art, not only the accuracy of the outer peripheral surface of the photosensitive drum 2 is increased, but also the inner peripheral surface needs to be processed to improve the accuracy, and the manufacturing of the photosensitive drum is complicated. The cost was high. Further, since the accuracy of the obtained electrophotographic photosensitive member is affected by the accuracy between the inner and outer peripheral surfaces of the photosensitive drum, the accuracy is further reduced.

また、フランジギアは感光ドラムに接着一体化されることが多いが、嵌合接着作業の際に、フランジギアのドラム嵌合部７１や感光ドラム２に塗布した接着剤が、感光ドラム外周面側にはみ出し、感光ドラムを汚染するおそれがある。 In many cases, the flange gear is bonded and integrated with the photosensitive drum, but the adhesive applied to the drum fitting portion 71 of the flange gear and the photosensitive drum 2 during the fitting and bonding operation is performed on the outer peripheral surface side of the photosensitive drum. It may stick out and contaminate the photosensitive drum.

本発明は、上記に鑑み、電子写真感光体全体の精度を高めながら、接着剤が感光ドラム表面にはみ出さない電子写真感光体を提供することを課題とするものである In view of the above, an object of the present invention is to provide an electrophotographic photosensitive member in which the adhesive does not protrude from the surface of the photosensitive drum while improving the accuracy of the entire electrophotographic photosensitive member.

本発明の発明者は、鋭意検討の結果、フランジギアを感光ドラムに外嵌して接着一体化するようにし、さらに、フランジギア外嵌部の内周面に溝を設けることにより、上記課題を解決できることを知見し、本発明を完成させた。 As a result of intensive studies, the inventor of the present invention externally fits the flange gear to the photosensitive drum and integrally integrates the flange gear, and further, by providing a groove on the inner peripheral surface of the flange gear outer fitting portion, As a result, the present invention has been completed.

本発明は、感光ドラムの端部に、合成樹脂製のフランジギアを一体に接着固定した電子写真感光体であって、フランジギアは、中心軸を嵌合可能なボス部と、ボス部を中央部に有する円盤状のウェブ部と、ウェブ部の外周部から感光ドラムの側に延設された円筒状の外嵌部と、ウェブ部の外周部と一体となるように設けられた歯部を有すると共に、前記外嵌部の内周面に溝が形成されると共に、感光ドラム外周面に対し外嵌部が外嵌されていることを特徴とする電子写真感光体である。 The present invention relates to an electrophotographic photosensitive member in which a synthetic resin flange gear is integrally bonded and fixed to an end portion of a photosensitive drum, and the flange gear includes a boss portion capable of fitting a central axis, and a boss portion in the center. A disc-shaped web portion, a cylindrical outer fitting portion extending from the outer peripheral portion of the web portion toward the photosensitive drum, and a tooth portion provided so as to be integrated with the outer peripheral portion of the web portion. The electrophotographic photosensitive member is characterized in that a groove is formed on the inner peripheral surface of the outer fitting portion and the outer fitting portion is fitted on the outer peripheral surface of the photosensitive drum.

さらに、本発明の電子写真感光体において、感光ドラムの内部にアース板が取り付けられる場合には、フランジギア外嵌部が感光ドラム外周に外嵌される区間において、アース板が感光ドラムの内周面に接触するように取り付けられていることが好ましい（請求項２）。 Further, in the electrophotographic photosensitive member of the present invention, when the ground plate is attached to the inside of the photosensitive drum, the ground plate is disposed on the inner periphery of the photosensitive drum in a section where the flange gear outer fitting portion is fitted on the outer periphery of the photosensitive drum. It is preferable that it is attached so as to contact the surface (Claim 2).

本発明の電子写真感光体によれば、感光ドラムの内周面の精度が電子写真感光体全体の精度に悪影響を及ぼすことがないので、感光ドラムの内周面の精度を向上させなくても、全体の精度を向上できるという効果が得られる。また、感光ドラム内周面の精度を向上させる工程を省略することができるので、製造コストを低減することができる。 According to the electrophotographic photosensitive member of the present invention, since the accuracy of the inner peripheral surface of the photosensitive drum does not adversely affect the accuracy of the entire electrophotographic photosensitive member, it is possible to improve the accuracy of the inner peripheral surface of the photosensitive drum. The effect that the whole precision can be improved is obtained. In addition, since the process of improving the accuracy of the inner peripheral surface of the photosensitive drum can be omitted, the manufacturing cost can be reduced.

また、本発明によれば、外嵌部内周面に溝が設けられているので、塗布された余剰な接着剤が感光ドラム外周面にはみ出すことが未然に防止される。 Further, according to the present invention, since the groove is provided on the inner peripheral surface of the outer fitting portion, it is possible to prevent the applied excessive adhesive from protruding to the outer peripheral surface of the photosensitive drum.

また、外嵌部が感光ドラムに外嵌される区間において、アース板を感光ドラム内周面に接触させるようにすれば、アース板からフランジギアにかけての長さを短縮でき、電子写真印刷装置の小型化や省スペース化に効果的である。 Further, if the ground plate is brought into contact with the inner peripheral surface of the photosensitive drum in the section where the outer fitting portion is fitted to the photosensitive drum, the length from the ground plate to the flange gear can be shortened. Effective for downsizing and space saving.

以下、図面に基づいて、本発明の実施形態を説明する。
図１は本発明の実施形態の電子写真感光体１を示す断面図である。図２は、電子写真感光体１に組み込まれるフランジギア３単体の正面図及び断面図であり、図３には、フランジギア３単体の斜視図を示す。電子写真感光体１は、感光ドラム２の端部外周面に、フランジギア３の外嵌部３１が外嵌されるように接着一体化されて構成されている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a sectional view showing an electrophotographic photoreceptor 1 according to an embodiment of the present invention. FIG. 2 is a front view and a cross-sectional view of a single flange gear 3 incorporated in the electrophotographic photosensitive member 1, and FIG. 3 is a perspective view of the single flange gear 3. The electrophotographic photosensitive member 1 is configured to be bonded and integrated on the outer peripheral surface of the end portion of the photosensitive drum 2 so that the outer fitting portion 31 of the flange gear 3 is fitted.

感光ドラム２は、アルミニウムなどにより形成された円筒状の基体の外周面に、電荷発生層や電荷輸送層などの感光層を形成した部材である。電子写真の画像形成の精度を高めるため、感光ドラムの表面は高い精度で円筒状に仕上げられている。 The photosensitive drum 2 is a member in which a photosensitive layer such as a charge generation layer or a charge transport layer is formed on the outer peripheral surface of a cylindrical base formed of aluminum or the like. In order to improve the accuracy of electrophotographic image formation, the surface of the photosensitive drum is finished into a cylindrical shape with high accuracy.

フランジギア３は、その外周部にギア部３３を有する歯車である。フランジギア３の中央部には、その内周面に図示しない中心軸（シャフト）を嵌着してフランジギア３や電子写真感光体１の軸部をなすボス３６が設けられている。ボス３６の外側には円盤状のウェブ３５が一体に設けられており、ウェブ３５の外周部から、円筒状の外嵌部３１がウェブ３５から突き出すように設けられている。さらに、ウェブ３５の外周に一体化するように、短円筒状のリム３４が設けられており、リム３４の外周面に複数の歯からなるギア部３３が設けられている。さらにボス３６と、ウェブ３５と、外嵌部３１を互いに連結するように、半径方向に延びる板状のリブ３７がウェブの一方の面に放射状に設けられ、他方の面には、ボス３６と、ウェブ３５を互いに連結するように、板状のリブ３８が放射状に設けられている。なお、これらの図においては、フランジギア３のギア部３３の詳細な歯形形状は省略している。 The flange gear 3 is a gear having a gear portion 33 on the outer peripheral portion thereof. A boss 36 that forms a shaft portion of the flange gear 3 and the electrophotographic photosensitive member 1 is provided at the center portion of the flange gear 3 by fitting a not-shown center shaft (shaft) to the inner peripheral surface thereof. A disc-shaped web 35 is integrally provided outside the boss 36, and a cylindrical outer fitting portion 31 is provided so as to protrude from the web 35 from the outer peripheral portion of the web 35. Further, a short cylindrical rim 34 is provided so as to be integrated with the outer periphery of the web 35, and a gear portion 33 including a plurality of teeth is provided on the outer peripheral surface of the rim 34. Further, radially extending plate-like ribs 37 are provided on one surface of the web so as to connect the boss 36, the web 35, and the outer fitting portion 31 to each other. The plate-like ribs 38 are provided radially so as to connect the webs 35 to each other. In these drawings, the detailed tooth profile of the gear portion 33 of the flange gear 3 is omitted.

ボス部３６、リム３４、ギア部３３、外嵌部３１、ウェブ３５は、互いに同心円状になるように、リブ３７、３８とともに、合成樹脂により一体に成形され、フランジギア３を構成している。更に、外嵌部３１の内周には、感光ドラム２外周面と当接・接着されるはめあい面３１ａが形成されると共に、はめあい面３１ａ上には、感光ドラム２の軸と平行な溝３２、３２が、本実施形態においては１２本、設けられている。 The boss portion 36, the rim 34, the gear portion 33, the outer fitting portion 31, and the web 35 are integrally formed with synthetic resin together with ribs 37 and 38 so as to be concentric with each other, thereby constituting the flange gear 3. . Further, a fitting surface 31a that is in contact with and bonded to the outer peripheral surface of the photosensitive drum 2 is formed on the inner periphery of the outer fitting portion 31, and a groove 32 that is parallel to the axis of the photosensitive drum 2 is formed on the fitting surface 31a. , 32 are provided in the present embodiment.

フランジギア３は、ポリアセタール樹脂などのエンジニアリングプラスチックや、ポリアミド樹脂などの熱可塑性樹脂を用い、射出成形法により製造することができる。 The flange gear 3 can be manufactured by an injection molding method using an engineering plastic such as a polyacetal resin or a thermoplastic resin such as a polyamide resin.

フランジギア３は、その外嵌部３１内周のはめあい面３１ａが、感光ドラム２の外周面に外嵌され、接着一体化されるが、以下にその一体化工程の一例を説明する。まず、フランジギア３の外嵌部３１内周のはめあい面３１ａに接着剤を塗布する。そして、感光ドラム２を外嵌部３１に回転させながら内挿していく。この内挿操作により、接着剤が感光ドラム表面とはめあい面３１ａの間にいきわたる。所定の位置・姿勢まで感光ドラム２を挿入した後、接着剤を硬化させることにより、フランジギア３と感光ドラム２が一体化され、電子写真感光体１が得られる。 In the flange gear 3, the fitting surface 31a of the inner periphery of the outer fitting portion 31 is fitted onto the outer peripheral surface of the photosensitive drum 2 and bonded and integrated. An example of the integration process will be described below. First, an adhesive is applied to the fitting surface 31 a on the inner periphery of the outer fitting portion 31 of the flange gear 3. Then, the photosensitive drum 2 is inserted into the outer fitting portion 31 while being rotated. By this insertion operation, the adhesive spreads between the photosensitive drum surface and the fitting surface 31a. After the photosensitive drum 2 is inserted to a predetermined position and posture, the adhesive is cured, whereby the flange gear 3 and the photosensitive drum 2 are integrated, and the electrophotographic photosensitive member 1 is obtained.

本発明の作用効果を説明する。本発明においては、フランジギア３が感光ドラム２に対して外嵌されるように接着されているので、電子写真感光体１の精度が向上する。すなわち、本発明によれば、電子写真感光体１の精度（特にシャフトと感光ドラム表面の相対的な精度）が直接規定される感光ドラム外周面に対して、フランジギア３の外嵌部３１を直接外嵌したので、特許文献１に代表される従来技術のように感光ドラムの外周面と内周面の間の精度が電子写真感光体全体の精度に悪影響を及ぼす余地がなく、フランジギア３の精度を高めることによって、電子写真感光体１の精度を確実に高めることができる。 The function and effect of the present invention will be described. In the present invention, since the flange gear 3 is bonded so as to be fitted onto the photosensitive drum 2, the accuracy of the electrophotographic photosensitive member 1 is improved. That is, according to the present invention, the outer fitting portion 31 of the flange gear 3 is provided on the outer peripheral surface of the photosensitive drum in which the accuracy of the electrophotographic photosensitive member 1 (particularly the relative accuracy of the shaft and the photosensitive drum surface) is directly defined. Since it is directly fitted, there is no room for the accuracy between the outer peripheral surface and the inner peripheral surface of the photosensitive drum to adversely affect the accuracy of the entire electrophotographic photosensitive member as in the prior art represented by Patent Document 1, and the flange gear 3 By increasing the accuracy, the accuracy of the electrophotographic photosensitive member 1 can be reliably increased.

また、本発明によれば、感光ドラム２の内周面を切削加工などにより精度アップする必要がなくなり、その研削加工工程を省略でき、電子写真感光体１の製造コストを低減することができる。 Further, according to the present invention, it is not necessary to improve the accuracy of the inner peripheral surface of the photosensitive drum 2 by cutting or the like, the grinding process can be omitted, and the manufacturing cost of the electrophotographic photosensitive member 1 can be reduced.

また、本発明によれば、フランジギア３の外嵌部３１に溝３２を有するはめあい面３１ａが設けられ、当該外嵌部３１が感光ドラム２に対して外嵌されるように接着されているので、感光ドラム２の外周面に接着剤がはみ出すことを未然に防止できる。すなわち、余剰な接着剤が塗布されることがあろうとも、当該余剰分は、感光ドラム２の挿入操作の際に、感光ドラムの末端面によって拭い取られるように、フランジギア３の奥部すなわちウェブ３５の側へと押し込まれていき、フランジギアの外周側にはみ出してくるおそれがない。 Further, according to the present invention, the fitting surface 31 a having the groove 32 is provided in the outer fitting portion 31 of the flange gear 3, and the outer fitting portion 31 is bonded so as to be fitted to the photosensitive drum 2. Therefore, it is possible to prevent the adhesive from protruding from the outer peripheral surface of the photosensitive drum 2. That is, even if excess adhesive may be applied, the excess portion of the flange gear 3, that is, the excess portion is wiped off by the end surface of the photosensitive drum when the photosensitive drum 2 is inserted. There is no possibility of being pushed toward the web 35 and protruding to the outer peripheral side of the flange gear.

また、余剰な接着剤の一部は、はめあい面３１ａに設けられた溝３２に入り込んでいき、溝３２が接着剤だまりの働きをするので、接着剤が感光ドラム２の外周面にはみ出すことがより確実に防止される。 Further, a part of the surplus adhesive enters the groove 32 provided on the fitting surface 31a, and the groove 32 functions as an adhesive pool, so that the adhesive may protrude from the outer peripheral surface of the photosensitive drum 2. More reliably prevented.

なお、本実施形態のように溝３２が感光ドラムの軸と略平行に設けられている場合には特に、感光ドラム２を軸周りに回転させながら外嵌部３１のはめあい面に挿入することが好ましい。この回転操作によって、余分な接着剤が、はめあい面３１ａに設けられた溝３２によって吸収されるとともに、一方では、溝３２が接着剤だまりとなって、再び感光ドラム２の外周面とフランジギア３のはめあい面との間に供給され、両者を確実に接着することができる。 Note that, especially when the groove 32 is provided substantially parallel to the axis of the photosensitive drum as in the present embodiment, the photosensitive drum 2 can be inserted into the fitting surface of the outer fitting portion 31 while rotating around the axis. preferable. By this rotation operation, excess adhesive is absorbed by the groove 32 provided on the fitting surface 31 a, and on the other hand, the groove 32 becomes a pool of adhesive, and again the outer peripheral surface of the photosensitive drum 2 and the flange gear 3. It is supplied between the fitting surfaces and can be securely bonded to each other.

本発明は上記実施形態に限定されるものではなく、さまざまな改変を加えて実施することができる。以下に他の実施の形態を例示する。以下の説明においては、上記実施形態と異なる部分を中心に説明し、同様な部分についてはその詳細な説明を省略する。図４に示した実施形態においては、フランジギア３’には、ウェブ３５から突出する複数のピン３９が設けられると共に、ピン３９の先端部には、リン青銅版などからなるアース板４が取り付けられ、アース板４が感光ドラム２の内周面と金属製のシャフト５とを互いに導通している。 The present invention is not limited to the above embodiment, and can be implemented with various modifications. Other embodiments are illustrated below. In the following description, different parts from the above-described embodiment will be mainly described, and detailed description of similar parts will be omitted. In the embodiment shown in FIG. 4, the flange gear 3 ′ is provided with a plurality of pins 39 protruding from the web 35, and a ground plate 4 made of a phosphor bronze plate or the like is attached to the tip of the pin 39. Thus, the ground plate 4 electrically connects the inner peripheral surface of the photosensitive drum 2 and the metal shaft 5 to each other.

本実施形態によれば、感光ドラム２とフランジギアが外嵌する部分（部分Ａ）と、感光ドラム２とアース板４が接触・導通する部分（部分Ｂ）とが、感光ドラムの長さ方向において互いに重なり合う関係となる、即ち、フランジギア外嵌部が感光ドラム外周に外嵌される区間において、アース板が感光ドラムの内周面に接触するように取り付けられており、特許文献１に示されるような従来技術に比べると、フランジギア３からアース板４までが占めるスペースを短くすることができ、装置の小型化・省スペース化をさらに進めることができる。 According to the present embodiment, the part (part A) where the photosensitive drum 2 and the flange gear are fitted externally and the part (part B) where the photosensitive drum 2 and the ground plate 4 are in contact with each other (part B) are in the longitudinal direction of the photosensitive drum. In the section where the flange gear outer fitting portion is fitted on the outer periphery of the photosensitive drum, the ground plate is attached so as to contact the inner peripheral surface of the photosensitive drum. Compared to such a conventional technique, the space occupied by the flange gear 3 to the ground plate 4 can be shortened, and the apparatus can be further reduced in size and space.

図５には、上記実施形態に使用されるフランジギア３’の断面図を示すが、本実施形態においては、外嵌部３１内周のはめあい面には、リング状の溝３２’が設けられており、はめあい面は、外嵌部先端側のはめあい面３１ｂと外嵌部奥側（ウェブ側）のはめあい面３１ｃとに分かれている。フランジギア３’の外嵌部、特にその溝の形状は、このような形態としても良い。その他、ドラムの軸に対し斜めの溝としたり、これら種々の形態の溝を組み合わせた溝としても良い。 FIG. 5 shows a cross-sectional view of the flange gear 3 ′ used in the above embodiment. In this embodiment, a ring-shaped groove 32 ′ is provided on the fitting surface of the inner periphery of the outer fitting portion 31. The fitting surface is divided into a fitting surface 31b on the front end side of the outer fitting portion and a fitting surface 31c on the back side (web side) of the outer fitting portion. The outer fitting portion of the flange gear 3 ′, particularly the shape of the groove thereof, may have such a form. In addition, it is good also as a groove | channel inclined with respect to the axis | shaft of a drum, or a groove | channel which combined the groove | channel of these various forms.

図５に示したような、リング状の溝３２’を外嵌部はめあい面に設けた場合には、以下のようにして、感光ドラム２とフランジギアを接着することが好ましい。すなわち、準備したフランジギア３’に対し、ウェブ側のはめあい面３１ｃと溝３２’に接着剤を塗布する。外嵌部先端のはめあい面３１ｂには接着剤を塗布しない。そして、感光ドラム２をフランジギアの外嵌部に挿入して、所定の位置姿勢まで押し込んだ状態で接着剤を硬化させて電子写真感光体を完成させる。 When the ring-shaped groove 32 'as shown in FIG. 5 is provided on the fitting surface of the outer fitting portion, it is preferable to bond the photosensitive drum 2 and the flange gear as follows. That is, an adhesive is applied to the web-side fitting surface 31c and the groove 32 'for the prepared flange gear 3'. No adhesive is applied to the fitting surface 31b at the tip of the outer fitting portion. Then, the photosensitive drum 2 is inserted into the outer fitting portion of the flange gear, and the adhesive is cured in a state where the photosensitive drum 2 is pushed to a predetermined position and posture to complete the electrophotographic photosensitive member.

このような取り付け方法とすれば、感光ドラム２の外表面への接着剤のはみ出しをより確実に予防できると共に、溝３２’に塗布された接着剤が接着剤だまりとなり、押し込まれてくる感光ドラム２の表面に接着剤を供給することができるので、ウェブ側のはめあい面３１ｃの領域において接着剤を十分にいきわたらせて、感光ドラムとフランジギアをしっかりと接着一体化することができる。 With such an attachment method, it is possible to more reliably prevent the adhesive from protruding to the outer surface of the photosensitive drum 2, and the adhesive applied to the groove 32 'becomes a pool of adhesive and is pushed in. Since the adhesive can be supplied to the surface 2, the photosensitive drum and the flange gear can be firmly bonded and integrated by sufficiently spreading the adhesive in the area of the web-side fitting surface 31 c.

なお、このような実施形態においては、特に、外嵌部先端のはめあい面３１ｂが、感光ドラム２の外周面と緊密に接触するように、はめあいの設定を行うことが好ましく、それに対し、ウェブ側のはめあい面３１ｃは、接着剤が十分にいきわたるように、それよりもゆるめにはめあいの設定を行うことが好ましい。このような設定とすることにより、接着剤の感光ドラム表面へのはみ出しをより確実に防止することができ、かつその接着をより確実なものとできる。また、外嵌部先端のはめあい面３１ｂが感光ドラム外周面と直接接触するので、当該部分をフランジギア３’の寸法の基準面としてフランジギアを製造すれば、電子写真感光体がより高い精度を確保できるようになる。 In such an embodiment, it is particularly preferable to set the fitting so that the fitting surface 31b at the tip of the outer fitting portion is in intimate contact with the outer peripheral surface of the photosensitive drum 2. It is preferable that the fitting surface 31c is set to be looser so that the adhesive spreads sufficiently. By setting it as such, it is possible to more reliably prevent the adhesive from sticking out to the surface of the photosensitive drum, and to make the bonding more reliable. Further, since the fitting surface 31b at the front end of the outer fitting portion is in direct contact with the outer peripheral surface of the photosensitive drum, if the flange gear is manufactured using the portion as a reference surface of the dimension of the flange gear 3 ′, the electrophotographic photosensitive member has higher accuracy. It can be secured.

なお、本実施形態においては、感光ドラムの外周面には接着剤は塗らずに挿入・接着作業を行うことが好ましい。前記した第１の実施形態においては、感光ドラムの外周面に接着剤を塗布しても良いが、塗布量は極力少なくすることが好ましい。 In the present embodiment, it is preferable to perform the insertion / bonding operation without applying an adhesive to the outer peripheral surface of the photosensitive drum. In the first embodiment described above, an adhesive may be applied to the outer peripheral surface of the photosensitive drum, but it is preferable to reduce the application amount as much as possible.

なお、上記実施形態の説明においては、ウェブ３５の外周に隣接して設けられた短円筒状のリム３４の外周にギア部３３を設けた実施形態を示したが、本発明はこれに限定されず、リム３４は必須ではない。即ち、ギア部３３は、外嵌部３１の外周や、ウェブの外周、リムの外周、あるいは、これらにまたがるように設けることができる。 In the description of the above embodiment, the embodiment has been described in which the gear portion 33 is provided on the outer periphery of the short cylindrical rim 34 provided adjacent to the outer periphery of the web 35. However, the present invention is not limited to this. The rim 34 is not essential. That is, the gear part 33 can be provided so that it may straddle the outer periphery of the outer fitting part 31, the outer periphery of a web, the outer periphery of a rim, or these.

また、上記実施形態においてはリブ、３７、３８が設けられた形態について説明したが、当該リブは、フランジギア３が必要な強度・剛性及び精度を備えるように、その形状及び数を適宜設定すれば良く。場合によっては、リブ３７、３８を設けなくても良い。 In the above embodiment, the ribs 37 and 38 have been described. However, the shape and number of the ribs are appropriately set so that the flange gear 3 has the necessary strength, rigidity and accuracy. Just do it. In some cases, the ribs 37 and 38 may not be provided.

本発明によれば、電子写真技術の中核である電子写真感光体を、高い精度を持たせながら比較的低コストで、かつ、感光ドラム表面に接着剤がはみ出すことなく製造することができる。 According to the present invention, an electrophotographic photosensitive member, which is the core of electrophotographic technology, can be manufactured at a relatively low cost while having high accuracy and without any adhesive protruding on the surface of the photosensitive drum.

本発明の電子写真感光体の第１の実施の形態を示す断面図。1 is a cross-sectional view showing a first embodiment of an electrophotographic photosensitive member of the present invention. フランジギア３の正面図およびそのＸ−Ｘ断面図。The front view of the flange gear 3, and its XX sectional drawing. フランジギア３の斜視図。The perspective view of the flange gear 3. FIG. 本発明の電子写真感光体の第２の実施の形態を示す断面図。Sectional drawing which shows 2nd Embodiment of the electrophotographic photoreceptor of this invention. フランジギア３’の断面図。Sectional drawing of the flange gear 3 '. 電子写真感光体の従来の実施形態を示す断面図。Sectional drawing which shows conventional embodiment of an electrophotographic photoreceptor.

符号の説明Explanation of symbols

１ 電子写真感光体
２ 感光ドラム
３、３’ フランジギア
３１ 外嵌部
３１ａ はめあい面
３２ 溝
３３ ギア部
３４ リム
３５ ウェブ
３６ ボス
３７、３８ リブ
３９ ピン
４ アース板
５ シャフト DESCRIPTION OF SYMBOLS 1 Electrophotographic photoreceptor 2 Photosensitive drum 3, 3 'Flange gear 31 Outer fitting part 31a Fitting surface 32 Groove 33 Gear part 34 Rim 35 Web 36 Boss 37, 38 Rib 39 Pin 4 Ground plate 5 Shaft

Claims (2)

感光ドラムの端部に、合成樹脂製のフランジギアを一体に接着固定した電子写真感光体であって、
フランジギアは、中心軸を嵌合可能なボス部と、ボス部を中央部に有する円盤状のウェブ部と、ウェブ部の外周部から感光ドラムの側に延設された円筒状の外嵌部と、ウェブ部の外周部と一体となるように設けられた歯部を有すると共に、
前記外嵌部の内周面に溝が形成されると共に、感光ドラム外周面に対し外嵌部が外嵌されていることを特徴とする電子写真感光体。 An electrophotographic photosensitive member in which a synthetic resin flange gear is integrally bonded and fixed to the end of the photosensitive drum,
The flange gear includes a boss portion that can be fitted with a central shaft, a disc-shaped web portion having a boss portion at the center portion, and a cylindrical outer fitting portion that extends from the outer peripheral portion of the web portion toward the photosensitive drum. And having a tooth portion provided so as to be integrated with the outer peripheral portion of the web portion,
An electrophotographic photosensitive member, wherein a groove is formed on an inner peripheral surface of the outer fitting portion, and an outer fitting portion is fitted on the outer peripheral surface of the photosensitive drum. 請求項１に記載の電子写真感光体であって、
感光ドラムの内部にアース板が取り付けられると共に、
フランジギア外嵌部が感光ドラム外周に外嵌される区間において、アース板が感光ドラムの内周面に接触するように取り付けられていることを特徴とする電子写真感光体。 The electrophotographic photosensitive member according to claim 1,
A ground plate is attached inside the photosensitive drum,
An electrophotographic photosensitive member, wherein a ground plate is attached so as to contact an inner peripheral surface of a photosensitive drum in a section where the flange gear outer fitting portion is fitted on the outer periphery of the photosensitive drum.
JP2008140590A 2008-05-29 2008-05-29 Electrophotographic photoreceptor Expired - Fee Related JP5214334B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008140590A JP5214334B2 (en) 2008-05-29 2008-05-29 Electrophotographic photoreceptor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008140590A JP5214334B2 (en) 2008-05-29 2008-05-29 Electrophotographic photoreceptor

Publications (2)

Publication Number Publication Date
JP2009288492A true JP2009288492A (en) 2009-12-10
JP5214334B2 JP5214334B2 (en) 2013-06-19

Family

ID=41457768

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008140590A Expired - Fee Related JP5214334B2 (en) 2008-05-29 2008-05-29 Electrophotographic photoreceptor

Country Status (1)

Country Link
JP (1) JP5214334B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011002710A (en) * 2009-06-19 2011-01-06 Fuji Xerox Co Ltd Drive transmission component, drive transmission mechanism using the same, driven device and driving processing device
JP2012008533A (en) * 2010-05-21 2012-01-12 Canon Inc Photoreceptor drum, process cartridge, and flange attaching method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5970811B2 (en) 2011-12-28 2016-08-17 セイコーエプソン株式会社 LIGHT EMITTING ELEMENT, LIGHT EMITTING DEVICE, AND ELECTRONIC DEVICE
US11078209B2 (en) * 2017-07-21 2021-08-03 Sekisui Chemical Co., Ltd. Polycyclic aromatic hydrocarbon derivative, fluorescent material, phosphorescent material, and light-modulating material

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01319782A (en) * 1988-06-22 1989-12-26 Sony Corp Photosensitive drum device
JPH0479376U (en) * 1990-11-21 1992-07-10
JPH0588595A (en) * 1991-09-30 1993-04-09 Konica Corp Photosensitive drum
JPH0571858U (en) * 1992-02-28 1993-09-28 京セラ株式会社 Electrophotographic photoreceptor
JPH06241251A (en) * 1993-02-12 1994-08-30 Victor Co Of Japan Ltd Braking device of rotary drum
JPH08286563A (en) * 1995-04-19 1996-11-01 Konica Corp Color image forming device
JPH0962144A (en) * 1995-08-28 1997-03-07 Canon Inc Method for bonding cylindrical member and engaging member, assembled body of these, assembled body of photoreceptor and process cartridge
JPH0962143A (en) * 1995-08-29 1997-03-07 Konica Corp Drum-like image forming body
JPH10333494A (en) * 1997-05-30 1998-12-18 Seiko Epson Corp Image carrier unit
JPH10333493A (en) * 1997-06-03 1998-12-18 Ricoh Co Ltd Cylindrical member and fixing method therefor
JPH1124500A (en) * 1997-07-07 1999-01-29 Fuji Xerox Co Ltd Method for fixing cylindrical base substance
JP2000089608A (en) * 1998-09-09 2000-03-31 Mitsubishi Chemicals Corp Cylindrical electrophotographic photoreceptor
JP2001249574A (en) * 2000-03-02 2001-09-14 Fuji Denki Gazo Device Kk Resin flange and cylindrical electrophotographic sensitive body provided with it
JP2002351259A (en) * 2001-05-29 2002-12-06 Ricoh Co Ltd Electrophotographic photoreceptor drum and method for producing the same, amd electrophotographic image forming device mounting electrophotographic photoreceptor drum
JP2005036871A (en) * 2003-07-14 2005-02-10 Fuji Xerox Co Ltd Rotor
JP2007240897A (en) * 2006-03-09 2007-09-20 Fuji Xerox Co Ltd Flange for electrophotographic photoreceptor with bearing and electrophotographic photoreceptor with bearing
JP2008122552A (en) * 2006-11-10 2008-05-29 Murata Mach Ltd Photoreceptor drum and image forming apparatus

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01319782A (en) * 1988-06-22 1989-12-26 Sony Corp Photosensitive drum device
JPH0479376U (en) * 1990-11-21 1992-07-10
JPH0588595A (en) * 1991-09-30 1993-04-09 Konica Corp Photosensitive drum
JPH0571858U (en) * 1992-02-28 1993-09-28 京セラ株式会社 Electrophotographic photoreceptor
JPH06241251A (en) * 1993-02-12 1994-08-30 Victor Co Of Japan Ltd Braking device of rotary drum
JPH08286563A (en) * 1995-04-19 1996-11-01 Konica Corp Color image forming device
JPH0962144A (en) * 1995-08-28 1997-03-07 Canon Inc Method for bonding cylindrical member and engaging member, assembled body of these, assembled body of photoreceptor and process cartridge
JPH0962143A (en) * 1995-08-29 1997-03-07 Konica Corp Drum-like image forming body
JPH10333494A (en) * 1997-05-30 1998-12-18 Seiko Epson Corp Image carrier unit
JPH10333493A (en) * 1997-06-03 1998-12-18 Ricoh Co Ltd Cylindrical member and fixing method therefor
JPH1124500A (en) * 1997-07-07 1999-01-29 Fuji Xerox Co Ltd Method for fixing cylindrical base substance
JP2000089608A (en) * 1998-09-09 2000-03-31 Mitsubishi Chemicals Corp Cylindrical electrophotographic photoreceptor
JP2001249574A (en) * 2000-03-02 2001-09-14 Fuji Denki Gazo Device Kk Resin flange and cylindrical electrophotographic sensitive body provided with it
JP2002351259A (en) * 2001-05-29 2002-12-06 Ricoh Co Ltd Electrophotographic photoreceptor drum and method for producing the same, amd electrophotographic image forming device mounting electrophotographic photoreceptor drum
JP2005036871A (en) * 2003-07-14 2005-02-10 Fuji Xerox Co Ltd Rotor
JP2007240897A (en) * 2006-03-09 2007-09-20 Fuji Xerox Co Ltd Flange for electrophotographic photoreceptor with bearing and electrophotographic photoreceptor with bearing
JP2008122552A (en) * 2006-11-10 2008-05-29 Murata Mach Ltd Photoreceptor drum and image forming apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011002710A (en) * 2009-06-19 2011-01-06 Fuji Xerox Co Ltd Drive transmission component, drive transmission mechanism using the same, driven device and driving processing device
JP2012008533A (en) * 2010-05-21 2012-01-12 Canon Inc Photoreceptor drum, process cartridge, and flange attaching method

Also Published As

Publication number Publication date
JP5214334B2 (en) 2013-06-19

Similar Documents

Publication Publication Date Title
JP5214334B2 (en) Electrophotographic photoreceptor
JP6038961B2 (en) The camera module
JP5553599B2 (en) Electric motor
JP2007043845A (en) Stator structure and manufacturing method thereof
WO2014184832A1 (en) Joint structure, and joining method therefor
JP6254853B2 (en) Two-color molding method and two-color molding
JP2006288200A (en) Production and motor of permanent-magnet rotor
JP2000232744A (en) Rotor shape and shaft press fit structure for sr motor
JP2007124820A (en) Motor
JP7069833B2 (en) motor
JP2007300711A (en) Motor and manufacturing method therefor
US8615884B2 (en) Method of manufacturing rolling bearing device
JP2002209352A (en) Permanent magnet rotor of rotating electric machine and method for manufacturing the same
JPH07322576A (en) Manufacture of permanent magnet rotor
JP2006316979A (en) Fastening band caulking method for constant velocity joint
US8713743B2 (en) Hub flange for cast hub brush
JP2004347116A (en) Sliding bearing and its manufacturing method
JPS63117646A (en) Magnet yoke
JP2017102186A (en) Flange for magnet roll, and magnet roll and method of manufacturing the same
JP2004304904A (en) Stator and rotary electric machine
JP2004308767A (en) Torque limiter
JP4628068B2 (en) Writing instrument
JP2583037Y2 (en) Electrophotographic photoreceptor
JP6744067B2 (en) Speaker and manufacturing method thereof
JP2001295914A (en) Plastic molded gear

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20110202

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20121107

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20121113

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20130226

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20130227

R150 Certificate of patent or registration of utility model

Ref document number: 5214334

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20190308

Year of fee payment: 6

LAPS Cancellation because of no payment of annual fees