JPH0434442A - process cartridge - Google Patents
process cartridgeInfo
- Publication number
- JPH0434442A JPH0434442A JP2139648A JP13964890A JPH0434442A JP H0434442 A JPH0434442 A JP H0434442A JP 2139648 A JP2139648 A JP 2139648A JP 13964890 A JP13964890 A JP 13964890A JP H0434442 A JPH0434442 A JP H0434442A
- Authority
- JP
- Japan
- Prior art keywords
- tram
- gear
- image carrier
- transmission member
- force transmission
- 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
Links
Landscapes
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
- Electrophotography Configuration And Component (AREA)
- Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は複写機等の画像形成装置に着脱自在に配設され
るプロセスカートリッジに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a process cartridge that is removably installed in an image forming apparatus such as a copying machine.
（従来の技術）
複写機等の画像形成装置においては感光ドラム（像担持
体）、帯電器、現像器１クリーニング器といった画像形
成機器をカートリッジ容器内に一体的に組み付け、これ
等をプロセスカートリッジとして装置本体内に着脱自在
に配設して、メンテナンスの容易化か図られているもの
は多い。(Prior Art) In an image forming apparatus such as a copying machine, image forming equipment such as a photosensitive drum (image bearing member), a charger, and a developing device 1 cleaning device are integrally assembled in a cartridge container, and these are used as a process cartridge. Many devices are removably installed within the device body to facilitate maintenance.
そして、このプロセスカートリッジ内の感光ドラムはプ
ロセスカートリッジか装置本体内に装着されると、該装
置本体側の駆動源により回転されることとなるが、この
ために感光ドラムの端部には装置本体側の回転力を感光
ドラムに伝える回転力伝達部材か取り付けられている。When the photosensitive drum in the process cartridge is installed in the process cartridge or the apparatus main body, it will be rotated by the drive source of the apparatus main body. A rotational force transmission member is attached to transmit the rotational force from the side to the photosensitive drum.
この回転力伝達部材（以下トラムギヤと称す）と感光ド
ラムとの取り付は方法につき、第４図により説明すると
、ドラムギヤ１１０はその側面の突出部１１１を円筒状
の感光トラム１００の端部に差し込み、接着剤により感
光ドラム１００とトラムギヤ１１０とは結合されている
。The method of attaching this rotational force transmission member (hereinafter referred to as tram gear) and the photosensitive drum is explained with reference to FIG. The photosensitive drum 100 and the tram gear 110 are coupled with adhesive.
この場合、感光トラム１００とトラムギヤ１００の突部
１１１とをしまりばめ状態て嵌合させると、接着剤の入
り込む余裕か無くなり結合か不十分になると共に、中間
ばねやすき間ばめ状態で係合させると接着剤は十分に塗
布されるか組立時感光トラム１００に対しトラムギヤ１
１０に倒れや偏芯を生し妥当てない。In this case, if the photosensitive tram 100 and the protrusion 111 of the tram gear 100 are fitted in a tight fit, there will be no room for the adhesive to enter, resulting in insufficient bonding, and the intermediate spring or the protrusion 111 will not fit properly. If the adhesive is applied sufficiently, or if the tram gear 1 is
10 is not appropriate as it causes tilting and eccentricity.
このため、トラムギヤ１１０の突部１１と感光ドラム１
００とをしまりばめ状態て嵌合させると共に、トラムギ
ヤ１１０の突部１１１の周方向（感光ドラム１００の回
転方向）に接着剤溜りをなす溝１１２を形成し、該満１
１２等に接着剤を塗布して感光トラム１００とドラムギ
ヤ１１０とを結合したものも多い。Therefore, the protrusion 11 of the tram gear 110 and the photosensitive drum 1
00 in a tight fit state, and a groove 112 forming an adhesive reservoir is formed in the circumferential direction of the protrusion 111 of the tram gear 110 (rotation direction of the photosensitive drum 100),
In many cases, the photosensitive tram 100 and the drum gear 110 are connected by applying an adhesive to the tram 12 or the like.
（発明が解決しようとする課題）
しかしながら、ドラムギヤ１１０の突部１１１の周方向
に溝１１２を形成し、該溝１１２内の接着剤により感光
ドラムｌＯＯとドラムギヤ１１０とを係合した場合、該
保合部の強度は感光ドラム１００の回転方向の力に対し
ては十分に大きいが、感光ドラム１００の軸方向の力に
対しては小さいという欠点があった。(Problem to be Solved by the Invention) However, when the groove 112 is formed in the circumferential direction of the protrusion 111 of the drum gear 110 and the photosensitive drum lOO and the drum gear 110 are engaged with the adhesive in the groove 112, the The strength of the joint is sufficiently large against the force in the rotational direction of the photosensitive drum 100, but has a disadvantage in that it is small against the force in the axial direction of the photosensitive drum 100.
また、回転方向に直交する向きに、ドラムギヤ１１０の
突部１１１に複数の溝を形成することも考えられるが、
この場合結合部の強度は、感光ドラム１００の軸方向の
力に対しては十分に大きいが、感光トラム１００の回転
方向の力に対しては小さいという欠点かある。It is also conceivable to form a plurality of grooves in the protrusion 111 of the drum gear 110 in a direction perpendicular to the rotation direction;
In this case, the strength of the joint is sufficiently large against the force in the axial direction of the photosensitive drum 100, but is weak against the force in the rotational direction of the photosensitive tram 100, which is a drawback.
本発明は上記問題に鑑みてなされたものて、その目的と
する処は、カートリッジ容器内の像担持体と該像担持体
回転用の回転力伝達部材とを嵌合後接着剤により結合す
る場合においても、その結合部の強度か像担持体の軸方
向及び回転方向のいずれの力に対しても十分に大きいプ
ロセスカートリッジを提供するにある。The present invention has been made in view of the above problems, and its object is to connect an image carrier in a cartridge container and a rotational force transmission member for rotating the image carrier with an adhesive after fitting. Also, the object of the present invention is to provide a process cartridge in which the strength of the joint portion is sufficiently large to withstand forces in both the axial direction and the rotational direction of the image carrier.
（課題を解決するための手段）
上記目的を達成すべく本発明は、外部の駆動力伝達部材
を介して回転される像担持体回転用の回転力伝達部材が
、像担持体の端部と嵌合的に結合されているプロセスカ
ートリッジにおいて、前記回転力伝達部材と像担持体と
の嵌合周面に回転方向に対して斜状に接着剤溜りをなす
複数の溝を形成したことを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention provides that a rotational force transmission member for rotating an image carrier rotated via an external driving force transmission member is connected to an end of the image carrier. In the process cartridge that is fitted together, a plurality of grooves forming adhesive reservoirs are formed on the fitting peripheral surface of the rotational force transmitting member and the image carrier at an angle with respect to the rotational direction. shall be.
（作用）
像担持体回転用の回転力伝達部材が像担持体の端部と嵌
合的に結合されている場合、この回転伝達部材と像担持
体との嵌合周面に回転方向に対して斜状に接着剤溜りを
なす複数の溝を形成しているため、像担持体の回転方向
に対しても、軸方向に対しても、前記溝内の接着剤によ
り像担持体は回転力伝達部材と強固に結合される。(Function) When the rotational force transmission member for rotating the image carrier is coupled to the end of the image carrier in a fitting manner, there is a Since a plurality of grooves forming adhesive reservoirs are formed in a diagonal manner, the image bearing body receives rotational force due to the adhesive in the grooves, both in the rotational direction of the image bearing member and in the axial direction. It is firmly connected to the transmission member.
（実施例） 以下に本発明の実施例を添付図面に基づいて説明する。(Example) Embodiments of the present invention will be described below based on the accompanying drawings.
第１図はプロセスカートリッジｌの断面図を示すもので
、ｌＯは一定方向に回転される像担持体としての感光ド
ラムである。該感光ドラム１０の周りには帯電器１１、
現像器１２、クリーニング器１３といった画像形成機器
が配設され、これ等の機器かカートリッジ容器ｌａ内に
一体的に組み込まれてプロセスカートリッジｌを形成し
ている。FIG. 1 shows a cross-sectional view of a process cartridge 1, in which 10 is a photosensitive drum as an image carrier that is rotated in a fixed direction. A charger 11 is provided around the photosensitive drum 10,
Image forming devices such as a developing device 12 and a cleaning device 13 are provided, and these devices are integrated into the cartridge container la to form the process cartridge l.
プロセスカートリッジｌは内部の機器が寿命に達したり
、現像器１２内のトナーＴが使い尽くされた場合、この
プロセスカートリッジｌ全体を画像形成装置の装置本体
に対して交換し、メンテナンスの容易化を図るためのも
のである。従って、プロセスカートリッジｌは容易に装
置本体に対して着脱できるようになっている。When the internal equipment reaches the end of its life or the toner T in the developing device 12 is used up, the entire process cartridge L can be replaced in the main body of the image forming apparatus to facilitate maintenance. This is for the purpose of achieving this goal. Therefore, the process cartridge 1 can be easily attached to and detached from the main body of the apparatus.
ここで、このプロセスカートリッジｌ内の機器の作用を
説明すると、帯電器１１により一様帯電された感光ドラ
ムｌＯに不図示のスキャナユニットより画像光りか露光
されると、感光トラム１゜上には静電潜像か形成される
。該静電潜像は感光トラムｌＯの回転とともに現像器１
２の方へ向けられ、該現像器１２によってトナーか供給
されてトナー像として顕像化される。該トナー像は感光
ドラム１０の回転とともに不図示の転写帯電器の方へ向
けられ、該転写帯電器により転写紙上に転写される。転
写の終了した感光ドラム１０はその残留トナーを有する
部分かクリーニング器１３よりクリーニングされ、つぎ
の画像形成のために備えられる。Here, to explain the operation of the equipment in this process cartridge 1, when the photosensitive drum 10, which is uniformly charged by the charger 11, is exposed to image light from a scanner unit (not shown), a light beam on the photosensitive tram 1° is exposed. An electrostatic latent image is formed. The electrostatic latent image is transferred to the developing device 1 as the photosensitive tram 1O rotates.
2, and toner is supplied by the developing device 12 to be visualized as a toner image. As the photosensitive drum 10 rotates, the toner image is directed toward a transfer charger (not shown), and is transferred onto a transfer paper by the transfer charger. After the transfer, the portion of the photosensitive drum 10 having residual toner is cleaned by a cleaning device 13, and the photosensitive drum 10 is prepared for the next image formation.
尚、１４はドラムシャッターてあり、プロセスカートリ
ッジｌが装置本体外にある場合、感光トラムｌＯのカー
トリッジ容器１ａからの露出部の保護をするためのもの
である。A drum shutter 14 is used to protect the exposed portion of the photosensitive tram 10 from the cartridge container 1a when the process cartridge 1 is outside the main body of the apparatus.
さて、プロセスカートリッジ１内の感光トラムｌＯは回
転力伝達部材であるトラムギヤ２０を介して装置本体側
の駆動ギヤ３０により回転されるが、以下プロセスカー
トリッジ１の上記トラムギヤ２０周りについて第２図を
参照しつつ説明する。Now, the photosensitive tram lO in the process cartridge 1 is rotated by a drive gear 30 on the apparatus main body side via a tram gear 20 which is a rotational force transmitting member, and below, regarding the tram gear 20 and its surroundings in the process cartridge 1, see FIG. I will explain as I go along.
トラムギヤ２０はギヤ部２１と、該ギヤ部２１の内側面
側に設けられた断面円形の突部２２、及びギヤ部２１の
外側面側に設けられた軸受部２３とから構成され、前記
突部２２が円筒状の感光ドラム１０の端部にしまりばめ
状態て嵌合しており、前記軸受部２３かカートリッジ容
器１ａの側壁１ａ−１に枢支されている。そして、ドラ
ムギヤ２０のギヤ部２１が装置本体側の駆動ギヤ３０に
噛合しているため、該駆動ギヤ３０の回転によりドラム
ギヤ２０を介して感光トラム１０はカートリッジ容器１
ａに枢支されつつ図示矢印方向Ｐに一定速度で回転する
こととなる。The tram gear 20 is composed of a gear portion 21, a protrusion 22 with a circular cross section provided on the inner side of the gear portion 21, and a bearing portion 23 provided on the outer side of the gear portion 21. 22 is tightly fitted to the end of the cylindrical photosensitive drum 10, and the bearing portion 23 is pivotally supported on the side wall 1a-1 of the cartridge container 1a. Since the gear portion 21 of the drum gear 20 meshes with the drive gear 30 on the apparatus main body side, the rotation of the drive gear 30 causes the photosensitive tram 10 to move into the cartridge container 1 through the drum gear 20.
It rotates at a constant speed in the direction of the arrow P in the figure while being pivotally supported by the point a.
ドラムギヤ２０の前記突部２２は感光トラムｌＯの端部
にしまりばめ状態て嵌合しているが、感光ドラムｌＯを
介して感光ドラム表面を帯電させる帯電ローラ等を回転
する等、感光ドラムｌＯの回転負荷の上昇に対しても、
感光ドラム１０とトラムギヤ２０間の結合状態を十分に
保持すべく、トラムギヤ２０の突部２２と感光トラム１
０とは接着剤を介して結合されている。The protrusion 22 of the drum gear 20 is tightly fitted to the end of the photosensitive drum 1O, and the protrusion 22 of the drum gear 20 is tightly fitted to the end of the photosensitive drum 1O. Even when the rotational load increases,
In order to sufficiently maintain the connection between the photosensitive drum 10 and the tram gear 20, the protrusion 22 of the tram gear 20 and the photosensitive tram 1
0 through an adhesive.
この場合、接着剤を感光ドラム１０の内面とトラムギヤ
２０の突部２２の外面間に十分に保持すべく、ドラムギ
ヤ２０の突部２２の外周面に接着剤溜りとして機能する
輻Ａの複数の接着溝２４か形成されている。該接着溝２
４は感光トラム】０のドラム軸Ｑ方向に対して９０度よ
り小さい所定角θたけ傾斜した状態となっており、且つ
トラムギヤ２０の突部２２をビスと考えた場合、トラム
ギヤ２０の回転によりこのビスを締め込んでいく方向に
前記接着溝２４は傾斜されている。In this case, in order to sufficiently hold the adhesive between the inner surface of the photosensitive drum 10 and the outer surface of the protrusion 22 of the tram gear 20, a plurality of adhesive holes A are formed on the outer peripheral surface of the protrusion 22 of the drum gear 20 to serve as adhesive reservoirs. A groove 24 is also formed. The adhesive groove 2
4 is a photosensitive tram tilted at a predetermined angle θ smaller than 90 degrees with respect to the direction of the drum axis Q of 0, and if the protrusion 22 of the tram gear 20 is considered as a screw, the rotation of the tram gear 20 causes this The adhesive groove 24 is inclined in the direction in which the screw is tightened.
従って、接着溝２４内に十分な接着剤を保持させた状態
で、トラムギヤ２０の突部２２を感光トラム１０に嵌合
すれば、この接着溝２４内の接着剤等を介して感光ドラ
ムｌＯとトラムギヤ２０とは十分強固に結合されること
となる。Therefore, if the protrusion 22 of the tram gear 20 is fitted to the photosensitive tram 10 with sufficient adhesive held in the adhesive groove 24, the photosensitive drum lO will be connected to the photosensitive drum 10 through the adhesive in the adhesive groove 24. The tram gear 20 is sufficiently firmly connected to the tram gear 20.
而して、感光ドラムｌＯとトラムギヤ２０とが接着溝２
４を介して斜状に結合されているため、該結合部の突部
２２の周方向幅Ｃは第３図て示される如（、Ｃ＝Ａ／ｃ
ｏｓθとなり、接着溝２４をドラム軸Ｑ方向に配設した
場合に比べ、Ｃ−Ａだけ結合部の長さか大きくなる。従
って、感光ドラムｌＯとドラムギヤ２０とは結合部の長
さか大きくなった分たけ、その周方向に強固に結合され
ることでなる。また、接着溝２４かドラムギヤ２０の回
転に対してその突部２２が感光ドラム１０の内部にくい
込むように形成されているため、ドラムギヤ２０の回転
に伴ないトラムギヤ２０と感光ドラムｌＯとの結合部に
ゆるみ等に生じにくく、ドラムギヤ２０と感光ドラムｌ
Ｏの結合はより強固になる。Thus, the photosensitive drum lO and the tram gear 20 are connected to the adhesive groove 2.
4, the circumferential width C of the protrusion 22 of the joint is as shown in FIG. 3 (C=A/c).
os θ, and the length of the joint is increased by CA compared to the case where the adhesive groove 24 is arranged in the direction of the drum axis Q. Therefore, the photosensitive drum IO and the drum gear 20 are more firmly connected in the circumferential direction as the length of the connecting portion increases. Further, since the protrusion 22 of the adhesive groove 24 is formed so as to sink into the inside of the photosensitive drum 10 when the drum gear 20 rotates, the joint between the tram gear 20 and the photosensitive drum 1O is formed as the drum gear 20 rotates. Drum gear 20 and photosensitive drum l
The O bond becomes stronger.
また、感光ドラムｌＯとドラムギヤ２０とが接着溝２４
を介して斜状に結合されているため、該結合部のドラム
軸Ｑ方向の長さも、接着溝２４を突部２２の周方向に配
設した場合に比べその結合部の長さを十分長くとること
かでき、感光トラム１０とドラムギヤ２０とはトラム軸
Ｑの方向に対しても強固に結合されることとなる。Further, the photosensitive drum IO and the drum gear 20 are connected to each other in the adhesive groove 24.
, the length of the joint in the direction of the drum axis Q is sufficiently longer than that in the case where the adhesive groove 24 is disposed in the circumferential direction of the protrusion 22. The photosensitive tram 10 and the drum gear 20 are also firmly coupled in the direction of the tram shaft Q.
従って、感光トラムｌＯとトラムギヤ２０との嵌合部に
感光トラムｌＯの軸方向又は周方向についての種々の力
か作用しても、前記嵌合部における感光トラムｌＯとト
ラムギヤ２０との結合状態は強固であり、接着剤か感光
トラムｌＯ又はドラムギヤ２０の突部２２から剥かれる
ことはない。Therefore, even if various forces act in the axial direction or circumferential direction of the photosensitive tram 10 on the fitting portion between the photosensitive tram 10 and the tram gear 20, the state of connection between the photosensitive tram 10 and the tram gear 20 at the fitting portion remains unchanged. It is strong and the adhesive will not peel off from the photosensitive tram lO or the protrusion 22 of the drum gear 20.
以上の如く、感光トラム１０とトラムギヤ２０との嵌合
部の周面に複数の接着溝２４を斜状に配設するだけの簡
単な手段により、感光トラムｌＯの軸方向又は周方向の
力に対しても、感光トラムｌＯとドラムギヤ２０とは強
固に結合され、該トラムギヤ２０て感光トラムｌＯを適
正に回転てきることとなる。As described above, the force in the axial or circumferential direction of the photosensitive tram 10 can be reduced by simply arranging a plurality of adhesive grooves 24 obliquely on the circumferential surface of the fitting portion between the photosensitive tram 10 and the tram gear 20. In contrast, the photosensitive tram 10 and the drum gear 20 are firmly coupled, and the tram gear 20 can properly rotate the photosensitive tram 10.
（発明の効果） 以上の説明て明らかな如く本発明によれば。(Effect of the invention) As is clear from the above description, according to the present invention.
像担持体とその回転力伝達部材との嵌合周面に複数の接
着剤溜りをなす斜状の溝を配設するだけの簡単な手段に
より、像担持体と回転力伝達部材とを強固に結合するこ
とかてき、この回転力伝達部材により像担持体を適正に
回転てきることとなる。The image carrier and the rotational force transmission member can be firmly bonded together by a simple means of arranging a plurality of diagonal grooves forming a plurality of adhesive reservoirs on the fitting peripheral surface of the image carrier and the rotational force transmission member. By coupling, the image carrier can be properly rotated by this rotational force transmitting member.
第１図はプロセスカートリックの断面図、第２図はプロ
セスカートリッジの感光トラム端部周りの断面図、第３
図はドラムギヤに設けられた接着溝の説明図、第４図は
従来技術を説明するための図である。
１・・・プロセスカートリッジ、１０−・・感光ドラム
（像担持体）、２０−・・トラムギヤ（回転力伝達部材
）、２４−・・接着溝（溝）、３０−・・駆動ギヤ（駆
動力伝達部材）。
特許出願人 キャノン株式会社Figure 1 is a sectional view of the process cartridge, Figure 2 is a sectional view of the process cartridge around the end of the photosensitive tram, and Figure 3 is a sectional view of the process cartridge.
The figure is an explanatory diagram of adhesive grooves provided in a drum gear, and FIG. 4 is a diagram for explaining a conventional technique. DESCRIPTION OF SYMBOLS 1... Process cartridge, 10-... Photosensitive drum (image carrier), 20-... Tram gear (rotational force transmission member), 24-... Adhesive groove (groove), 30-... Drive gear (driving force) transmission member). Patent applicant Canon Co., Ltd.
Claims (1)
用の回転力伝達部材が、像担持体の端部と嵌合的に結合
されているプロセスカートリッジにおいて、前記回転力
伝達部材と像担持体との嵌合周面に回転方向に対して斜
状に接着剤溜りをなす複数の溝を形成したことを特徴と
するプロセスカートリッジ。In a process cartridge in which a rotational force transmission member for rotating an image carrier rotated via an external driving force transmission member is coupled to an end of the image carrier in a fit-fitting manner, the rotational force transmission member and the image A process cartridge characterized in that a plurality of grooves forming adhesive reservoirs are formed obliquely with respect to the rotational direction on a circumferential surface that fits into a carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2139648A JP2711012B2 (en) | 1990-05-31 | 1990-05-31 | Process cartridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2139648A JP2711012B2 (en) | 1990-05-31 | 1990-05-31 | Process cartridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0434442A true JPH0434442A (en) | 1992-02-05 |
| JP2711012B2 JP2711012B2 (en) | 1998-02-10 |
Family
ID=15250168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2139648A Expired - Fee Related JP2711012B2 (en) | 1990-05-31 | 1990-05-31 | Process cartridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2711012B2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS476282U (en) * | 1971-02-15 | 1972-09-21 | ||
| JPS62137713U (en) * | 1986-02-20 | 1987-08-31 | ||
| JPS62201772U (en) * | 1986-06-12 | 1987-12-23 | ||
| JPH0217765U (en) * | 1988-07-20 | 1990-02-06 |
-
1990
- 1990-05-31 JP JP2139648A patent/JP2711012B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS476282U (en) * | 1971-02-15 | 1972-09-21 | ||
| JPS62137713U (en) * | 1986-02-20 | 1987-08-31 | ||
| JPS62201772U (en) * | 1986-06-12 | 1987-12-23 | ||
| JPH0217765U (en) * | 1988-07-20 | 1990-02-06 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2711012B2 (en) | 1998-02-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |