JPS61140973A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPS61140973A JPS61140973A JP59262516A JP26251684A JPS61140973A JP S61140973 A JPS61140973 A JP S61140973A JP 59262516 A JP59262516 A JP 59262516A JP 26251684 A JP26251684 A JP 26251684A JP S61140973 A JPS61140973 A JP S61140973A
- Authority
- JP
- Japan
- Prior art keywords
- cleaner
- gear
- drum
- photosensitive drum
- upper unit
- 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
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 6
- 230000006866 deterioration Effects 0.000 abstract description 2
- 108091008695 photoreceptors Proteins 0.000 description 34
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
- G03G21/1604—Arrangement or disposition of the entire apparatus
- G03G21/1623—Means to access the interior of the apparatus
- G03G21/1628—Clamshell type
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
- G03G2221/1606—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the photosensitive element
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
- G03G2221/1678—Frame structures
- G03G2221/1687—Frame structures using opening shell type machines, e.g. pivoting assemblies
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は電子写真複写装置など粉体状現像剤（以下トナ
ーともいう）Ｋよる現像を利用した画像形成装置、特に
像担持体（電子写真複写装置では感光体）上の残留トナ
ーを除去するためのクリーナを装置本体に対して着脱自
在とした画像形成装置における改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to image forming apparatuses such as electrophotographic copying apparatuses that utilize development using a powdered developer (hereinafter also referred to as toner), and particularly to image bearing members (electrophotographic copying The present invention relates to an improvement in an image forming apparatus in which a cleaner for removing residual toner on a photoreceptor (in the apparatus) is removably attached to the main body of the apparatus.
電子写真装置などトナー利用の画像形成装置では、クリ
ーナを、更には場合によりては、像担持体に対設された
現像後、帯電器々ど他のプロセス部品と一緒になり九一
体のカートリップ式ユニットとしてクリーナを、像担持
体に対して着脱自在な構成とすることが近年性われてい
る。これは。In image forming apparatuses that use toner, such as electrophotographic apparatuses, the cleaner and, in some cases, the cart that is installed opposite the image carrier together with other process parts such as a charger after development. In recent years, it has become common to construct a cleaner as a lip-type unit so that it can be attached to and detached from an image carrier. this is.
部品の交換・修理その他のメンテナンスを楽に容易にす
る利点があること、また近年特に感光体の耐用寿命が長
くなりたため、寿命の来た他のプロセス部品と一緒のユ
ニットとしてとれを交換してしまうの沈下合理であるこ
と等の理由による。It has the advantage of making parts replacement, repair, and other maintenance easier, and in recent years, the useful life of photoreceptors has become particularly long, so it is now possible to replace them as a unit with other process parts that have reached the end of their service life. The reason is that the subsidence is reasonable.
しかしながら、感光体（像担持体）Ｋ対してクリーナの
着脱を行なうと、現像剤の飛散が生じ、装置本体内の諸
部分の汚れを招き、％に帯電器の汚れを生じた場合には
画像品質が著しく低下する恐れがある。この主原因社、
クリーナーを着脱するとき、クリーナに向い合う感光体
表面上の位置に未回収のトナーが残ってお〕、再びクリ
ーナを装着した場合にクリーナーと感光体との対面位置
がズして該未回収現像剤の一部が飛散するととくある。However, when the cleaner is attached to and removed from the photoreceptor (image carrier) K, developer scatters, causing stains on various parts of the apparatus body, and if the charger gets dirty, the image Quality may deteriorate significantly. This main cause company,
When the cleaner is attached and removed, uncollected toner remains on the surface of the photoconductor facing the cleaner, and when the cleaner is attached again, the facing position of the cleaner and the photoconductor shifts and the uncollected toner is removed. It is said that some of the agent may scatter.
この問題を解決するに杜、クリーナー取シ出し直前にク
リーナーが対面していた感光体面上の位置と、クリーナ
再装着時にクリーナーが対面する感光体面上の位置とを
寸分たがわず同じＫなるようにすればよいが、これ祉装
置本体およびカートリッジの機械的公差をゼセにするこ
とに等しく、実際上は不可能である。To solve this problem, make sure that the position on the photoconductor surface that the cleaner faced just before removing the cleaner is exactly the same as the position on the photoconductor surface that the cleaner faces when reinstalling the cleaner. However, this would be equivalent to reducing the mechanical tolerances of the main body of the mobile device and the cartridge, and is practically impossible.
前記問題は、特に、クリーナーが感光体表面に接触する
タイプの方式１例えばブレード方式やツアー！クシ方式
等である場合に生じ謳い。The above problem is particularly problematic when the cleaner comes into contact with the photoreceptor surface, such as the blade method or the Tour! method. This occurs when the comb method is used.
本発明の目的は、上記のような欠点を除去し。 The object of the present invention is to eliminate the above-mentioned drawbacks.
像担持体（例えば電子写真複写装置の感光体ドラム）Ｋ
対してクリーナーを着脱自在とした画像形成装置におい
て、クリーナーの着脱に起因する前述の如きトナーの飛
散を容易に防止し、以て長期に亘って画像品質の低下を
防止するととくある。Image carrier (for example, photosensitive drum of an electrophotographic copying device) K
On the other hand, in an image forming apparatus having a detachable cleaner, it is possible to easily prevent toner from scattering as described above due to attachment and detachment of the cleaner, thereby preventing deterioration of image quality over a long period of time.
本発明は、クリーナーを像担持体に対して着脱自在とし
た画像形成装置において、クリーナーの着脱動作と連携
して像担持体を画像形成時の移動方向とは反対の方向に
所定量だけ移動させる機構を具備し、辷れによシ、クリ
ーナー離脱前の像担持体のクリーナーとの当接部が、ク
リーナー再装着時におけるそれに較べて、像担持体の画
像形成時務動方向で見て上流側となるようにしたもので
ある。これによ）、クリーナー離脱前の像担持体上の残
留トナーが再装着後のクリーナーによりて、汚染の原因
となることなく、確実に除去される。The present invention provides an image forming apparatus in which a cleaner is detachably attached to an image carrier, in which the image carrier is moved by a predetermined amount in a direction opposite to the movement direction during image formation in conjunction with the attachment and detachment operation of the cleaner. Equipped with a mechanism to prevent slippage, the contact part of the image carrier with the cleaner before the cleaner is removed is on the upstream side when viewed from the direction of movement during image formation of the image carrier compared to when the cleaner is reinstalled. It was designed so that As a result, residual toner on the image carrier before the cleaner is removed is reliably removed by the cleaner after being reattached without causing contamination.
第１図は本発明の一実施例に係る電子写真複写装置１の
主要部断面図である。FIG. 1 is a sectional view of the main parts of an electrophotographic copying apparatus 1 according to an embodiment of the present invention.
図示のように、導電性ドラム基体上に光導電層を設けた
感光ドラム２が、矢印方向に回転可能に装置本体に軸支
されている。このドラム２の周囲にはその回転方向に従
って、コロナ放電器３、短焦点光学素子アレイ４、現像
後５、転写コロナ放電器６、クリーナー７が配設されて
いる。コロナ放電器３、現像後５そしてクリーナー７は
カートリッジとしての筐体８によシ一体的に支持されて
いる。筐体８は本体側に固設されている〃イドレール９
によシ案内支持され、装置本体に対して着脱される。な
お現像後５は、従来周知の如く上部に現像剤を収納する
ホ、１４−５＆を有し、下部には現像剤を感光ドラム２
に供給するための回転体５ｂを具備している。現像剤と
しては磁性トナーによる一成分現像剤やトナーと磁性キ
ャリアとからなる二成分現像剤の使用ができる。また、
回転体５ｂとして社、表面に磁極を有した回転する磁気
ローラ、又線内部に磁気ｐ−ツを有しその周面ＫＧう様
に非磁性スリーブを設けたもの等の使用が可能である。As shown in the figure, a photosensitive drum 2 having a photoconductive layer provided on a conductive drum base is rotatably supported by the main body of the apparatus in the direction of the arrow. A corona discharger 3, a short focus optical element array 4, a post-developing device 5, a transfer corona discharger 6, and a cleaner 7 are arranged around the drum 2 according to its rotational direction. The corona discharger 3, the post-developing device 5, and the cleaner 7 are integrally supported by a housing 8 as a cartridge. The housing 8 has an idle rail 9 fixed to the main body side.
It is supported by the guide and attached to and detached from the main body of the device. As is well known in the art, the post-developing drum 5 has E, 14-5& for storing the developer in the upper part, and the developer is stored in the lower part of the photosensitive drum 2.
It is equipped with a rotating body 5b for supplying. As the developer, a one-component developer made of magnetic toner or a two-component developer made of toner and a magnetic carrier can be used. Also,
As the rotating body 5b, it is possible to use a rotating magnetic roller having magnetic poles on its surface, or a rotating magnetic roller having magnetic parts inside the wire and a non-magnetic sleeve provided around the circumferential surface thereof.
また、クリーナーγとしては、ブレード板を使用したも
の、又は７７−１９シを使用したものが適用できる。上
記第１図の実施例においては、現像後は一成分磁性現像
剤を用いた上記後者の構成の回転体を使用し、クリーナ
ー７は上記前者の構成を使用している。Further, as the cleaner γ, one using a blade plate or one using 77-19 can be applied. In the embodiment shown in FIG. 1, after development, a rotating body of the latter configuration using a one-component magnetic developer is used, and the cleaner 7 uses the former configuration.
上記複写装置において社、コロナ放電ａ３で感光ドラム
２０表面を所定極性で均一に帯電し、次いで装置本体上
部の往復移動する原稿台１０上の原稿をランｆ１１で照
明し１反射光を素子アレイ４を介してドラム２上に露光
して潜像を形成する。In the copying apparatus described above, the surface of the photosensitive drum 20 is uniformly charged with a predetermined polarity using a corona discharge a3, and then the document on the document table 10 that moves back and forth at the upper part of the main body of the apparatus is illuminated by a run f11, and one reflected light is applied to the element array 4. A latent image is formed on the drum 2 by exposing the drum 2 to light.
形成された潜像は現像後５によシ現像され、その現儂像
紘転写コ璽す放電器６によ）転写材に転写される。転写
材は転写材供給トレイ１２に操作者の手動作によシ供給
され、搬送四−２１３とタイ電ング胃−２１４を介して
転写部に搬送され、転写を終了した転写材は分離手段１
５によシ分離され、移動路１６を介して定着器１７に送
られて定着され、更に排出ローラ１８を介して排紙トレ
イ１９上に送シ出される。ドラム２上の残留現像剤はク
リーナー７で除去される。After development, the formed latent image is developed by 5 and transferred onto a transfer material by a discharge device 6 which transfers the latent image onto the transfer material. The transfer material is supplied to the transfer material supply tray 12 manually by the operator, and is conveyed to the transfer section via the conveyor 4-213 and the tie plate 214, and the transfer material that has been transferred is transferred to the separating means 1.
The sheet is separated into sheets 5, sent to a fixing device 17 via a moving path 16, where it is fixed, and further fed onto a paper ejection tray 19 via an ejection roller 18. The residual developer on the drum 2 is removed by a cleaner 7.
第２図に示すように、装置本体に対して筐体すなわちカ
ートリ、ジ８を着脱するために、カートリ、ジを含む１
為ニットは、軸２０を中心として回転し得るようＫなっ
ている。この上ユニット特にカートリッジは、軸２０中
心の回転によって感光体ドラム２を傷つけぬように構成
する必要がある。カートリッジ８は、上ユニットを第２
図の如く回転した後、案内レール９に泊って取シ出され
る。As shown in FIG.
The knit is arranged so that it can rotate about an axis 20. Above this, the unit, particularly the cartridge, must be constructed so as not to damage the photosensitive drum 2 due to rotation around the shaft 20. The cartridge 8 has the upper unit connected to the second
After rotating as shown in the figure, it rests on the guide rail 9 and is taken out.
第３図に示すように、上ユニツ）の案内レール９には保
合部材２１が取付けられてお夛、上ユニットを回転した
際、感光ドラム２に回転を与えるようになつている。こ
の上うに１本発明実施例では、カートリッジの取外しに
際して感光体を画像形成時の回転方向島とは逆の方向く
回転させる。As shown in FIG. 3, a retaining member 21 is attached to the guide rail 9 of the upper unit so as to impart rotation to the photosensitive drum 2 when the upper unit is rotated. Furthermore, in the embodiment of the present invention, when removing the cartridge, the photoreceptor is rotated in a direction opposite to the direction of rotation during image formation.
このことＫよりて、クリーナー７が当接していた付近の
感光体ｉ上の未回収現像剤の飛散が防止される。This prevents the unrecovered developer from scattering on the photoreceptor i in the vicinity where the cleaner 7 was in contact.
第３図でこれを詳説すると、２２は感光ドラム２の駆動
ギアであ）、１ｉｌＩｉ像形成時は矢印ａの方向に回転
する。上ユニットを第２図の如く上方に回転した場合、
レール９に取付けられている保合部材２１は上エニット
とともに上方へ引き上げられる。部材２１はステンレス
製の１〜２ｍ１１厚の板バネであシ先端が１方向にのみ
ギア２２と引っかかるような形状となっている。本実施
例では上ユニ、トの回転時に矢印ｂＫｆ’！＃！ｌ’ａ
りて保合部材２１は動くので、感光体ギヤ２２を矢印ａ
とは逆方向へ数歯分だけ回転させる。上ユニ、トを戻す
際には、保合部材２１％矢印すと逆方向に動き、感光体
ギア２２にその先端が触れるが、感光体ギア２２および
それに接続されている駆動源の慣性力によりて、感光体
ギア２２はほとんど回転せず、保合部材２１の先端社矢
印Ｃ方向に逃げる様になる。To explain this in detail with reference to FIG. 3, reference numeral 22 is a drive gear for the photosensitive drum 2), which rotates in the direction of arrow a when an 1ilIi image is formed. When the upper unit is rotated upward as shown in Figure 2,
The retaining member 21 attached to the rail 9 is pulled upward together with the upper unit. The member 21 is a plate spring made of stainless steel and has a thickness of 1 to 2 m. In this embodiment, when the upper unit and G are rotated, the arrow bKf'! #! l'a
As the holding member 21 moves, move the photoreceptor gear 22 in the direction of arrow a.
Rotate it a few teeth in the opposite direction. When returning the upper unit, the retaining member 21% moves in the opposite direction and its tip touches the photoreceptor gear 22, but due to the inertia of the photoreceptor gear 22 and the drive source connected to it, As a result, the photoreceptor gear 22 hardly rotates and seems to escape in the direction of the tip arrow C of the retaining member 21.
このように本実施例では、クリーナー７を含むカートリ
ッジ８の取外しのため上ユニットを上方に回転した時に
感光体ドラム２が数置の角度だけ反転するので、第４図
（＆）の如くクリーナー７０当接位置く当る感光体ドラ
ム面上に未回収の現像剤そのの異物２３が残りていても
、第４図伽）の様に異物２３の一部がクリーナー７よ）
感光体回転方向の下流側へ来るととなく、第４図（、）
の如く完全くクリーナー７の上流側の感光体ドラム面へ
位置する様になるので、カートリ、ジ再装着および上ユ
ニット開成後の次回の画像形成時に確実に異物２３はク
リーニングされる。すなわち、本実施例では、クリーニ
ング手段を含むカートリ、ジが感光体ドラムに対して着
脱されても、それに伴なう未回収現像剤等の異物の飛散
が良好に防止できる。As described above, in this embodiment, when the upper unit is rotated upward to remove the cartridge 8 containing the cleaner 7, the photosensitive drum 2 is inverted by several angles, so that the cleaner 70 is rotated as shown in FIG. 4 (&). Even if foreign matter 23 of unrecovered developer remains on the surface of the photoreceptor drum that comes into contact with the contact position, some of the foreign matter 23 is removed from the cleaner 7 as shown in Fig. 4).
As you come to the downstream side in the direction of rotation of the photoreceptor, Figure 4 (,)
Since the foreign matter 23 is completely located on the photosensitive drum surface on the upstream side of the cleaner 7 as shown in FIG. That is, in this embodiment, even if the cartridge or cartridge including the cleaning means is attached to and detached from the photoreceptor drum, the accompanying scattering of foreign substances such as uncollected developer can be effectively prevented.
第５図は現像後５及びクリーナー７を備えたカートリッ
ジを持つ本発明の他実施例である。本実施例でも感光体
ドラム２は該カートリ、ジとは独立でＩｎ、カートリッ
ジの着脱時において前操作として、感光体ドラムに当接
ないしは近接している上記プロセス部品５．７を感光体
ドラム２から遠ざけねばならない。これは着脱時に感光
体を保護するためである。前記第１実施例では上ユニッ
トを回転するととＫよりてプロセス部品を感光体ドラム
２から遠ざけていたが、本実施例では、カートリ、ジに
備えられている２つのプロセス部品５．７をカートリッ
ジに対して回転することＫよシ感光体ド２ム２とこれら
プロセス部品５，７とを離すようにしている。そのため
には、本実施例では装置本体手前にある円板状把手２５
を通常の感光体ドラム回転方向と反対方向に回すことに
連動させて現像後５及びクリーナー７にカートリッジに
対する上記回転を与えて感光体ドラム２かも離した後、
カートリッジを手ＩＮ側に引き出すようになっている。FIG. 5 shows another embodiment of the present invention having a cartridge equipped with a post-developing device 5 and a cleaner 7. FIG. In this embodiment as well, the photoreceptor drum 2 is independent of the cartridge, and as a pre-operation when installing or removing the cartridge, the process parts 5 and 7 that are in contact with or close to the photoreceptor drum are removed from the photoreceptor drum must be kept away from. This is to protect the photoreceptor during attachment and detachment. In the first embodiment, when the upper unit is rotated, the process parts are moved away from the photosensitive drum 2, but in this embodiment, the two process parts 5 and 7 provided in the cartridge are moved away from the photosensitive drum 2. The photoconductor dome 2 and these process parts 5 and 7 are separated from each other by rotating relative to the dome K. To do this, in this embodiment, a disc-shaped handle 25 located in front of the main body of the device is used.
After the development 5 and the cleaner 7 are rotated in the opposite direction to the normal rotation direction of the photoreceptor drum, the rotation is applied to the cartridge, and the photoreceptor drum 2 is also released.
The cartridge is pulled out to the hand IN side.
また、この把手２５はプロセス部品の離脱と同時に感光
体ドラム２を通常とは反対方向に若干角度回転させるこ
とが可能なように構成されている。カートリッジ装着時
は把手２５を感光体ドラムの通常回転方向と同方向に回
転させるが、このとき感光体ドラム２を回転させないよ
うに把手２５と感光体ドラム２は一方向にのみ連動する
ようＫなりている。この機構によシ、カートリッジの脱
着後は、クリーニング手段７付近の感光体ドラム２上の
未回収現像剤等の異物は、感光体ドラム２の通常回転方
向で見てクリーナー７の上流側に確実に位置するように
できるので、カートリ、ジ再装着後の画像形成時にクリ
ーナー７゜によって確実に回収され飛散による汚染の心
配はないＯ
第６図は、第５図において感光体ドラム２とは独立なプ
ロセス部品５．７のカートリ、ジを離脱する際の、感光
体ドラム２からプロセス部品５゜７を解除する機構を示
すものである。円板状把手２５は感光体ドラム２の中心
軸２にと同心に支持されておシ、その前部把手２５麿を
感光体ドラムの通常の回転方向とは逆方向に数置の角度
だけ回転させると、円板状把手２５に支持されている押
板２５１が現像後５の解除ビン５鴬を押し出す。Further, the handle 25 is configured to be able to rotate the photosensitive drum 2 by a slight angle in the opposite direction to the normal direction at the same time as the process component is removed. When the cartridge is installed, the handle 25 is rotated in the same direction as the normal rotation direction of the photoreceptor drum, but at this time, the handle 25 and the photoreceptor drum 2 are designed to interlock in only one direction so as not to rotate the photoreceptor drum 2. ing. With this mechanism, after the cartridge is installed and removed, foreign matter such as unrecovered developer on the photoreceptor drum 2 near the cleaning means 7 is reliably placed on the upstream side of the cleaner 7 when viewed from the normal rotational direction of the photoreceptor drum 2. 6 is independent of the photoreceptor drum 2 in FIG. This figure shows a mechanism for releasing the process component 5.7 from the photosensitive drum 2 when the process component 5.7 is removed from the cartridge. The disc-shaped handle 25 is supported concentrically with the central axis 2 of the photoreceptor drum 2, and the front handle 25 is rotated by several angles in the opposite direction to the normal rotation direction of the photoreceptor drum. Then, the push plate 251 supported by the disc-shaped handle 25 pushes out the released bottle 5 after development.
現像後５は回転軸５．によって回転可能に支持されてお
）、円板状把手２５０回転によりて、図中点線の如く感
光体２よシ離間することになる。通常の複写時の現像後
５と感光体２との位置関係を決めるためには、解除ビン
５ｍと押板２５にはカートリ、ジの本体装着時には互に
離れているようにする方が都合が良い。クリーナー７も
同様の機構で感光体ドラム２と離間するようになってい
る。After development 5 is the rotating shaft 5. When the disc-shaped handle rotates 250 times, it is separated from the photoreceptor 2 as shown by the dotted line in the figure. In order to determine the positional relationship between the post-development 5 and the photoreceptor 2 during normal copying, it is convenient to make the release bin 5m and the push plate 25 separate from each other when the cartridge and cartridge are attached to the main body. good. The cleaner 7 is also separated from the photosensitive drum 2 by a similar mechanism.
また１円板状把手２５を感光体ドラムの通常の回転方向
とは反対の方向に回転させると感光体ドラムもそれと同
方向に回転するが逆にカートリッジを装着する場合に円
板状把手２５を感光体ドラムの通常回転方向に回転させ
ても感光体ドラム２を回転させないような両者間の回転
係合機構が設けられている。本実施例においては、特に
ドラム２と円板状把手との回転係合機構は図示しないが
。Furthermore, when the first disc-shaped handle 25 is rotated in the opposite direction to the normal rotation direction of the photoconductor drum, the photoconductor drum also rotates in the same direction. A rotational engagement mechanism is provided between the photosensitive drum 2 so that the photosensitive drum 2 does not rotate even if the photosensitive drum 2 is rotated in the normal rotation direction of the photosensitive drum. In this embodiment, the rotational engagement mechanism between the drum 2 and the disc-shaped handle is not particularly shown.
第３図で示したものと同様な機構を用いることが可能で
あシ、又感光体ドラムを反転方向にのみ回転駆動するこ
とのできるものであれば他の係合手段でありても嵐い。It is possible to use a mechanism similar to that shown in FIG. 3, or other engaging means can be used as long as the photosensitive drum can be rotated only in the reverse direction. .
第７図は、ＩｔＡ光体ドラム２に対して他のｆロセス部
品とクリーナーとを一体托したカートリッジとしてでは
なくて、クリーナーのみを着脱するようＫした実施例で
ある。クリーナー７は支持軸７１ と押えビン７、によ
りて位置固定される。感光体ドラム２を反転させる反転
係合部材４１はその端部の軸４１ｍがクリーナーの押え
ビン７、および７意の間にはさまれておシ、クリーナー
が支軸７．を中心Ｋｄ力方向回転することによりて、Ｃ
方向に移動する。この際反転部材４１の先端部４１１は
感光体ドラムのギヤ軸２２と干渉し、該ドラムを通常の
回転方向とは逆方向忙回転させる。FIG. 7 shows an embodiment in which only the cleaner is attached to and removed from the ItA optical drum 2, rather than as a cartridge in which other f-process parts and the cleaner are integrated. The cleaner 7 is fixed in position by a support shaft 71 and a presser pin 7. The reversing engaging member 41 for reversing the photosensitive drum 2 has its end shaft 41m sandwiched between the presser pin 7 of the cleaner and the support shaft 7. By rotating the center Kd in the force direction, C
move in the direction. At this time, the tip end 411 of the reversing member 41 interferes with the gear shaft 22 of the photoreceptor drum, causing the drum to rotate in a direction opposite to the normal rotation direction.
クリーナー７は４方向に回転したのち１図面に垂直方向
（本体手前方向）へ引き出すむとが出来る。After the cleaner 7 rotates in four directions, it can be pulled out in a direction perpendicular to one drawing (towards the front of the main body).
又、クリーナーの装着時には軸４１．をビン７゜と７．
ではさむよ５にクリーナーを装置本体に挿入し、軸ハを
中心Ｋｄとは逆方向へ回転することによって感光体に対
して位置決め固定される。Also, when installing the cleaner, the shaft 41. Bin 7° and 7.
Then, the cleaner is inserted into the main body of the apparatus using the clamp 5, and the shaft C is rotated in a direction opposite to the center Kd, thereby positioning and fixing the cleaner relative to the photoreceptor.
この際、反転部材４１は矢印ｅとは逆方向に押されその
先端４１．はギヤ軸２２と接触するが、その先端が傾斜
面となっているため、イヤ軸２２に対して回転力を与え
る力を及ｔ！さす１図中上部方向に逃げる。このためク
リーナー装着時にはドラムを回転しない。本実施例によ
っても前述実施例と同様のトナー汚れ防止効果が得られ
る。At this time, the reversing member 41 is pushed in the direction opposite to the arrow e and its tip 41. contacts the gear shaft 22, but since its tip is an inclined surface, it exerts a rotational force on the ear shaft 22. As expected, escape towards the top of the figure. For this reason, the drum does not rotate when the cleaner is installed. This embodiment also provides the same toner stain prevention effect as the previous embodiment.
以上の実施例では、クリーナー又はそれを含むカートリ
ッジを装置本体から取外す際に感光体を反転すなわち通
常回転方向とは逆方向に回動させるようＫしたが、クリ
ーナー又はカートリ、ジの装置本体への装着の際に感光
体を反転させるように構成してもよい。In the above embodiments, when removing the cleaner or the cartridge containing it from the apparatus main body, the photoreceptor is reversed, that is, rotated in the opposite direction to the normal rotation direction. The photoreceptor may also be configured to be reversed during installation.
また、いうまでもなく本発ＷＪａ電子写真装置に限らず
トナーによる現像およびクリーナーによる残留トナー除
去を行う他のタイプ（例えば静電記録タイプ）の画像形
成装置にも適用可能である。Needless to say, the invention is not limited to the WJa electrophotographic apparatus of the present invention, but is also applicable to other types of image forming apparatuses (for example, electrostatic recording type) that perform development using toner and removal of residual toner using a cleaner.
以上説明したように１本発明によれば、像担持体（電子
写真装置における感光体）の周シの複数のｆ−セス部品
と一体的に又；ａ単独穎久η、−すへ１を着脱自在に備
え九トナー利用画偉形成装置において、り９７＝ング部
近傍の像担持体上の未回収現像剤等の異物が、カートリ
ッジ再装着後の画像形成時に確実にクリーニングされる
ので、前記異物による装置本体その他の部品、なかんづ
ぐ帯電器等の重要部品の汚れを防止でき、長期に亘って
画像形成装置の安定した性能を得ることが可能である。As explained above, according to the present invention, the image bearing member (photoreceptor in an electrophotographic apparatus) is integrally formed with a plurality of f-segment parts around the periphery; In the removably equipped toner image forming apparatus, foreign matter such as uncollected developer on the image bearing member near the mounting portion is reliably cleaned during image formation after the cartridge is reinstalled. It is possible to prevent the main body of the apparatus, other parts, and important parts such as the charger from being contaminated by foreign matter, and it is possible to obtain stable performance of the image forming apparatus over a long period of time.
第１図紘本発明を実施した電子写真複写装置の一例を示
す断面図、
第２図は上記装置におけるカートリ、ジの着脱説明のた
めの断面図、
第３図は同実施例における感光体ドラムの反転機構説明
図、
第４図（ａ）伽）（Ｃ）は未回収現像剤等の異物の夫々
の位置状態説明図、
第５図（ａ） （ｂ）は本発明の他の実施例を示す部分
図、第６図は第５図のよ〕詳細な図、
第７図は本発明の他の実施例を示す図である。
２・・・感光ドラム、 ３・・・帯電器、５−現
像後、 ７・・・クリーナ、８・−カートリ
ッジ、 ９・・・案内レール、２１・・・保合部材
、 ２２・・・感光ドラム駆動ギヤ、２５・−円
板状把手、 ２５．・・・押板、４１・・・保合部材
幣１図
第４図
（ａ）（ｂ）
（Ｃ）
（ａ）
Ｃｂ）
帛６図
第７図Fig. 1 is a cross-sectional view showing an example of an electrophotographic copying apparatus embodying the present invention; Fig. 2 is a cross-sectional view for explaining the attachment and detachment of the cartridge and the cartridge in the above-described apparatus; and Fig. 3 is a photosensitive drum in the same embodiment. Figures 4(a) and 4(C) are diagrams explaining the positions of foreign objects such as uncollected developer, and Figures 5(a) and (b) are other embodiments of the present invention. FIG. 6 is a detailed view similar to FIG. 5, and FIG. 7 is a diagram showing another embodiment of the present invention. 2... Photosensitive drum, 3... Charger, 5-After development, 7... Cleaner, 8... Cartridge, 9... Guide rail, 21... Holding member, 22... Photosensitive Drum drive gear, 25-disc-shaped handle, 25. ... Push plate, 41 ... Retaining member banknote 1 Figure 4 (a) (b) (C) (a) Cb) Figure 6 Figure 7
Claims (1)
るためのクリーナが像担持体に対して着脱自在である画
像形成装置において、クリーナの着脱動作と連携して像
担持体を画像形成時の移動方向とは逆方向に所定量だけ
移動させる機構を具備したことを特徴とする画像形成装
置。In an image forming apparatus in which a cleaner for removing residual toner on the image bearing member after development with toner is removable from the image bearing member, the image bearing member is removed during image formation in conjunction with the attachment/detachment operation of the cleaner. An image forming apparatus characterized by comprising a mechanism for moving a predetermined amount in a direction opposite to a moving direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59262516A JPS61140973A (en) | 1984-12-12 | 1984-12-12 | Image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59262516A JPS61140973A (en) | 1984-12-12 | 1984-12-12 | Image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61140973A true JPS61140973A (en) | 1986-06-28 |
Family
ID=17376886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59262516A Pending JPS61140973A (en) | 1984-12-12 | 1984-12-12 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61140973A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0314140A2 (en) * | 1987-10-30 | 1989-05-03 | Mita Industrial Co. Ltd. | Image-forming machine |
-
1984
- 1984-12-12 JP JP59262516A patent/JPS61140973A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0314140A2 (en) * | 1987-10-30 | 1989-05-03 | Mita Industrial Co. Ltd. | Image-forming machine |
| EP0314140A3 (en) * | 1987-10-30 | 1990-08-29 | Mita Industrial Co. Ltd. | Image-forming machine |
| EP0592016A2 (en) * | 1987-10-30 | 1994-04-13 | Mita Industrial Co. Ltd. | Image-forming machine |
| EP0592016A3 (en) * | 1987-10-30 | 1994-06-15 | Mita Industrial Co Ltd | Image-forming machine |
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