JPH0520752B2 - - Google Patents
Info
- Publication number
- JPH0520752B2 JPH0520752B2 JP61230358A JP23035886A JPH0520752B2 JP H0520752 B2 JPH0520752 B2 JP H0520752B2 JP 61230358 A JP61230358 A JP 61230358A JP 23035886 A JP23035886 A JP 23035886A JP H0520752 B2 JPH0520752 B2 JP H0520752B2
- Authority
- JP
- Japan
- Prior art keywords
- developer
- developing roller
- chamber
- sleeve
- developer chamber
- 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.)
- Expired - Lifetime
Links
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 238000001514 detection method Methods 0.000 description 9
- 238000005192 partition Methods 0.000 description 9
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 238000013019 agitation Methods 0.000 description 3
- 108091008695 photoreceptors Proteins 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、電子写真複写プロセス等で使用され
る現像装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a developing device used in electrophotographic copying processes and the like.
従来の技術
複写機、プリンター等の画像形成装置におい
て、感光体ドラム上に形成された静電潜像を顕像
化する現像装置として、磁気ブラシ方式の現像装
置が知られている。この磁気ブラシ現像装置にお
いては、現像容器内において、例えば、適当な現
像剤撹拌部材を回転させて現像剤を撹拌しつつ汲
み上げて、磁気ローラを内設した現像ローラの表
面に供与することが行なわれている。また、現像
ローラの表面に供与された現像剤は、現像ローラ
に近接させた層厚規制部材で、現像ローラ表面に
て保持搬送される現像剤の厚層を適正なものに規
制される。また、現像剤撹拌部材を回転させる駆
動手段は、現像ローラを駆動する駆動手段と連結
されている。2. Description of the Related Art In image forming apparatuses such as copying machines and printers, a magnetic brush type developing device is known as a developing device that visualizes an electrostatic latent image formed on a photoreceptor drum. In this magnetic brush developing device, for example, a suitable developer stirring member is rotated in the developer container to agitate and draw up the developer and apply it to the surface of the developing roller in which the magnetic roller is installed. It is. Furthermore, the thickness of the developer applied to the surface of the developing roller is controlled to an appropriate thickness by a layer thickness regulating member placed close to the developing roller. Furthermore, the driving means for rotating the developer stirring member is connected to the driving means for driving the developing roller.
この種の現像装置では、磁性キヤリアとトナー
との混合物からなる現像剤を交換する場合、また
現像容器内に異物が混入した場合等において、現
像容器内を清掃する必要がある。現像容器内の清
掃は、掃除機等を使用して行なわれ、現像ローラ
表面に保持されている現像剤を除去する際は現像
ローラを手動で回転させながら行なわれている。 In this type of developing device, it is necessary to clean the inside of the developing container when replacing the developer made of a mixture of magnetic carrier and toner, or when foreign matter gets mixed into the developing container. The inside of the developing container is cleaned using a vacuum cleaner or the like, and the developer retained on the surface of the developing roller is removed by manually rotating the developing roller.
発明が解決しようとする問題点
しかし、この様に構成された現像装置におい
て、現像ローラを手動で回転させるためには、現
像ローラの駆動手段又はこの駆動手段と連結され
る歯車列等の駆動手段を回転させることにより可
能になるが、連結される駆動手段内は手を挿入で
きる空間が少ないため効率的に回転させることは
困難であること、また現像剤による回転負荷が大
きく歯車面を持つて回転させると手を傷つけるこ
と、等の欠点を有している。Problems to be Solved by the Invention However, in the developing device configured as described above, in order to manually rotate the developing roller, it is necessary to use a driving means for the developing roller or a driving means such as a gear train connected to the driving means. However, it is difficult to rotate efficiently because there is little space in the connected drive means to insert a hand, and the rotational load due to the developer is large and it is difficult to rotate the gear surface. It has drawbacks such as injuring the hand when rotated.
そこで、本発明は現像容器内の現像剤の交換を
容易に行なわれるように改良された現像装置を提
供することを目的とする。 SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a developing device that is improved so that the developer in the developing container can be easily replaced.
問題点を解決するための手段
本発明は、表面に現像剤を保持し一方向に循環
搬送するための回転自在に設けられた現像ローラ
と、この現像ローラ表面と対向して配設し、前記
現像ローラ上に保持搬送される現像剤の層厚を規
制する層厚規制部材と、現像剤搬送方向の前記層
厚規制部材上流側で前記現像ローラの軸方向に延
在せしめ、かつ前記現像ローラの外周面に向かつ
て開口する様に配設し、前記現像ローラにて搬送
される現像剤を収納する第１現像剤室と、この第
１現像剤室に現像剤を供給する現像剤供給部材を
有する第２現像剤室と、前記現像ローラの駆動手
段内又は前記現像ローラの回転と連動される駆動
部内に設けられた手動回転用つまみとを備えたも
のである。Means for Solving the Problems The present invention provides a rotatably provided developing roller for holding developer on its surface and circulating it in one direction, and a developing roller disposed opposite to the surface of the developing roller. a layer thickness regulating member for regulating the layer thickness of the developer held and conveyed on the developing roller; and a layer thickness regulating member extending in the axial direction of the developing roller on the upstream side of the layer thickness regulating member in the developer conveying direction, and the developing roller a first developer chamber which is arranged to open toward the outer circumferential surface of the developer chamber and stores the developer conveyed by the developing roller; and a developer supply member which supplies the developer to the first developer chamber. and a manual rotation knob provided within a drive means for the developing roller or within a drive unit that is interlocked with rotation of the developing roller.
作 用
即ち、現像ローラの駆動手段内又は現像ローラ
の回転と連動される駆動部内に手動回転用つまみ
を設けたことにより、複写機のサービスマン等が
手動回転用つまみを回転させることにより現像ロ
ーラを回転させることができ、現像剤の交換等の
作業を安全で効率的に行なうことができるように
なる。In other words, by providing a manual rotation knob within the developing roller drive means or within the drive unit that is linked to the rotation of the developing roller, a copying machine service person or the like can rotate the manual rotation knob to rotate the developing roller. This allows operations such as developer replacement to be performed safely and efficiently.
実施例
以下、本発明の一実施例を添付図面に基づいて
説明する。Embodiment Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings.
第１図において、現像装置の筐体１９中に、複
数の磁極を有する回転自在な磁気ローラ１を内包
し、かつこの磁気ローラ１と相対回転自在な非磁
性体よりなるスリーブ２とより成る現像ローラ３
を感光体ドラム２０の表面に近接する様に配設さ
れている。また、スリーブ２の外周面は240メツ
シユのサンドブラスト処理等により微小の凹凸が
形成されている。現像剤は、磁気ローラ１の矢印
ａ方向の回転及びスリーブ２の矢印ｂ方向の回転
によりスリーブ２の外周面上を矢印ｂ方向に保持
搬送される。現像領域Ａ方向に保持搬送されるス
リーブ２表面上の現像剤の層厚を規制するため
に、現像剤搬送方向の現像領域Ａ上流側に位置
し、スリーブ２表面に対し所定間隙l1を保つよう
に、磁性体より成る層厚規制部材４を支持部材５
に固定的に設置される。支持部材５は、非磁性体
よりなり筐体１９に取付けている。規制板６は、
現像剤搬送方向の層厚規制部材４上流側でスリー
ブ２表面に対向する様にスリーブ２の軸方向に延
在させて配設し、この規制板６と筐体１９、現像
ローラ３、層厚規制部材４及び支持部材５により
磁気ローラ１の磁界領域内に現像ローラ３にて搬
送される現像剤を収納する第１現像剤室７を形成
せしめている。案内板８は、現像剤搬送方向の第
１現像剤室７上流側でスリーブ２の軸方向に延在
させるとともに、先端部を第１現像剤室７内に突
出せしめ、スリーブ２表面及び規制板６下端部に
対し各々所定間隙l2、l3を設けて配設され、筐体
１９の底部に取付けられている。規制板６の下端
近傍と案内板８とで現像剤供給路９が形成されて
いる。規制板６及び案内板８は例えば、非磁性の
金属板より成つている。 In FIG. 1, a developing device includes a rotatable magnetic roller 1 having a plurality of magnetic poles in a housing 19 of the developing device, and a sleeve 2 made of a non-magnetic material and rotatable relative to the magnetic roller 1. roller 3
are arranged close to the surface of the photoreceptor drum 20. Further, the outer circumferential surface of the sleeve 2 has minute irregularities formed by sandblasting with 240 mesh. The developer is held and conveyed on the outer peripheral surface of the sleeve 2 in the direction of the arrow b by rotation of the magnetic roller 1 in the direction of the arrow a and rotation of the sleeve 2 in the direction of the arrow b. In order to regulate the layer thickness of the developer on the surface of the sleeve 2 held and conveyed in the direction of the development area A, it is located upstream of the development area A in the developer conveyance direction, and maintains a predetermined gap l 1 with respect to the surface of the sleeve 2. As shown in FIG.
Fixedly installed. The support member 5 is made of a non-magnetic material and is attached to the housing 19. The regulation plate 6 is
A layer thickness regulating member 4 is disposed on the upstream side in the developer transport direction and extends in the axial direction of the sleeve 2 so as to face the surface of the sleeve 2, and controls the regulating plate 6, the housing 19, the developing roller 3, and the layer thickness. The regulating member 4 and the supporting member 5 form a first developer chamber 7 within the magnetic field area of the magnetic roller 1 to accommodate the developer conveyed by the developing roller 3 . The guide plate 8 extends in the axial direction of the sleeve 2 on the upstream side of the first developer chamber 7 in the developer transport direction, and has a tip portion protruding into the first developer chamber 7, and has a distal end portion that extends between the surface of the sleeve 2 and the regulating plate. They are arranged with predetermined gaps l 2 and l 3 from the lower ends of the housing 19, respectively, and are attached to the bottom of the housing 19. A developer supply path 9 is formed near the lower end of the regulation plate 6 and the guide plate 8 . The regulating plate 6 and the guide plate 8 are made of, for example, a non-magnetic metal plate.
現像剤供給路９の後方には、現像剤を収納する
第２現像剤室１０及びその上方部に第３現像剤室
１１が設けられている。第２現像剤室１０内に
は、現像剤を撹拌しつつ現像剤供給路９内に供給
するための現像剤供給部材１２と、第２現像剤室
１０内の現像剤のエンプテイを検出するための現
像剤残量検出手段が設けられている。 A second developer chamber 10 for storing developer is provided behind the developer supply path 9, and a third developer chamber 11 is provided above the second developer chamber 10. Inside the second developer chamber 10, there is a developer supply member 12 for supplying the developer into the developer supply path 9 while stirring the developer, and a developer supply member 12 for detecting the empty state of the developer in the second developer chamber 10. A developer remaining amount detection means is provided.
現像剤供給部材１２は、羽根板又はクランク棒
等から成り支軸１７を支点として回転自在に設け
られている。支軸１７の端部は、第２図に示す様
に筐体１９の外側に突出し、現像ローラ３のスリ
ーブ２に対し支軸１７を減速させる歯車列G1，
G2，G3，G4，G5を介してスリーブ２と現像剤供
給部材１２が連結され、現像剤供給部材１２は矢
印ｄ方向に一定速度で回転される。歯車G3には
手動回転用つまみ１８を設けている。 The developer supply member 12 is made of a blade plate, a crank rod, or the like, and is rotatably provided around a support shaft 17 as a fulcrum. The end of the support shaft 17 protrudes to the outside of the housing 19 as shown in FIG .
The sleeve 2 and the developer supply member 12 are connected through G 2 , G 3 , G 4 , and G 5 , and the developer supply member 12 is rotated at a constant speed in the direction of arrow d. The gear G3 is provided with a manual rotation knob 18.
現像剤残量検出手段は、筐体１９の側壁に揺動
可能に軸支されたアーム１３を有し、第２現像剤
室１０内上部の第１位置Y1とその下部の第２位
置Y2との間を往復移動可能に設けた検出部材１
４と、アーム１３の下端部に対し定期的に当接し
検出部材１４を第１位置Y1へと強制移動させる
規制手段として流用する現像剤供給部材１２と、
検出部材１４を第２位置Y2の方向に付勢せしめ
るためにアーム１３を含む検出部材１４の自重を
適正にし用いた付勢手段と、検出部材１４が第２
位置Y2に位置したことを適宜スイツチング手段
で検知する検知手段とで構成され、第２現像剤室
１０内がエンプテイになると外部に表示される。
現像剤供給部材１２の回転により定期的に当接す
るアーム１３の下端部は現像剤供給部材１２が矢
印ｄ方向と反対方向に回転させてもアーム１３を
揺動可能にせしめるために、略円弧状に形成せし
め、現像剤供給部材１２の回転方向に関係なくス
ムーズな揺動を可能にたらしめる位置にアーム１
３を軸支している。 The developer remaining amount detection means has an arm 13 pivotally supported in a swingable manner on the side wall of the casing 19, and has a first position Y1 at the upper part of the second developer chamber 10 and a second position Y1 at the lower part thereof. Detection member 1 provided so as to be movable back and forth between
4, and a developer supply member 12 that periodically contacts the lower end of the arm 13 and is used as a regulating means for forcibly moving the detection member 14 to the first position Y1 ;
In order to urge the detection member 14 in the direction of the second position Y 2 , a biasing means is used to properly balance the own weight of the detection member 14 including the arm 13;
The second developer chamber 10 is configured with a detection means for appropriately detecting that the second developer chamber 10 is located at the position Y2 using a switching means, and an external display is displayed when the second developer chamber 10 becomes empty.
The lower end of the arm 13, which comes into regular contact with the rotation of the developer supply member 12, has a substantially arcuate shape so that the arm 13 can swing even when the developer supply member 12 rotates in the direction opposite to the direction of arrow d. The arm 1 is formed at a position that enables smooth rocking regardless of the direction of rotation of the developer supply member 12.
It supports 3.
第２現像剤室１０と第３現像剤室１１との間に
は、揺動可能に軸支された仕切板１５が設けら
れ、仕切板１５と筐体１９底面とで現像剤補給路
１６が形成されている。仕切板１５の揺動は、第
３現像剤室１１内の現像剤重圧と仕切板１５の自
重及び現像剤供給部材１２と仕切板１５に設けた
突起部１５ａとを定期的に当接せしめて行なう様
に構成されている。 A swingably supported partition plate 15 is provided between the second developer chamber 10 and the third developer chamber 11, and a developer supply path 16 is formed between the partition plate 15 and the bottom surface of the housing 19. It is formed. The swinging of the partition plate 15 causes the developer pressure in the third developer chamber 11, the weight of the partition plate 15, and the developer supply member 12 and the protrusion 15a provided on the partition plate 15 to periodically come into contact with each other. It is configured to do so.
次に、以上の構成からなる現像装置の作動につ
いて説明する。 Next, the operation of the developing device having the above configuration will be explained.
最切に第１現像剤室７内に磁性キヤリアと磁性
トナーとの混合物からなる現像剤が装填され、本
装置が予備作動された後に、第３現像剤室１１及
び第２現像剤室１０に磁性トナーの現像剤が装填
される。この際、第１現像剤室７内に磁性キヤリ
アのみを装填しても良い。また、磁性キヤリアを
使用せず磁性トナーの現像剤のみを用いる一成分
現像の場合は、第３、第２現像剤室１１，１０を
至て第１現像剤室７内に現像剤を装填しても良
い。そして、この状態で本装置によつて静電潜像
の現像が可能になる。 After the first developer chamber 7 is loaded with a developer consisting of a mixture of magnetic carrier and magnetic toner and the device is pre-operated, the third developer chamber 11 and the second developer chamber 10 are loaded. A magnetic toner developer is loaded. At this time, only the magnetic carrier may be loaded into the first developer chamber 7. In addition, in the case of one-component development using only a magnetic toner developer without using a magnetic carrier, the developer is loaded into the first developer chamber 7 through the third and second developer chambers 11 and 10. It's okay. In this state, the electrostatic latent image can be developed by this apparatus.
ここで、現像剤は磁気ローラ１の矢印ａ方向の
回転とスリーブ２の矢印ｂ方向の回転によりスリ
ーブ２外周面上を矢印ｂ方向に保持搬送される。
第１現像剤室７を通過する際に磁性キヤリアと磁
性トナーは混合撹拌され、各々摩擦帯電される。
そして、この混合撹拌の結果、現像剤である磁性
キヤリアと磁性トナーとは、この時点で絶えず一
定範囲内の混合比で一体化され、現像領域Ａにお
いては現像剤からなる磁気ブラシが確実に形成さ
れる。ここで形成される磁気ブラシは感光体ドラ
ム２０の表面を摺擦し、その表面上の静電潜像を
現像して顕像化する。現像に供された後、スリー
ブ２の外周面に残留する現像剤は再度第１現像剤
室７へと至り、そこで第２現像剤室１０から供給
される現像剤と混合撹拌された後、再度現像に供
される。この時、第１現像剤室７内の現像剤は、
磁気ローラ１の磁力により常にスリーブ２表面方
向に吸引されているために、現像ローラ３の回転
により、スリーブ２表面近傍の現像剤は矢印ｂ方
向に保持搬送され、層厚規制部材４にて規制され
て残留する現像剤は矢印ｅ方向に流動し全体的に
均一に混合撹拌されるとともにスリーブ２の軸方
向への流動が抑えられる。 Here, the developer is held and conveyed on the outer peripheral surface of the sleeve 2 in the direction of the arrow b by the rotation of the magnetic roller 1 in the direction of the arrow a and the rotation of the sleeve 2 in the direction of the arrow b.
When passing through the first developer chamber 7, the magnetic carrier and the magnetic toner are mixed and stirred, and each is triboelectrically charged.
As a result of this mixing and agitation, the magnetic carrier, which is the developer, and the magnetic toner are constantly integrated at a mixing ratio within a certain range at this point, and a magnetic brush made of the developer is reliably formed in the development area A. be done. The magnetic brush formed here rubs the surface of the photoreceptor drum 20, and develops the electrostatic latent image on the surface into a visible image. After being subjected to development, the developer remaining on the outer circumferential surface of the sleeve 2 reaches the first developer chamber 7 again, where it is mixed and stirred with the developer supplied from the second developer chamber 10, and then mixed with the developer supplied from the second developer chamber 10. Subjected to development. At this time, the developer in the first developer chamber 7 is
Since the magnetic force of the magnetic roller 1 constantly attracts the developer toward the surface of the sleeve 2, the developer near the surface of the sleeve 2 is held and transported in the direction of arrow b by the rotation of the developing roller 3, and is regulated by the layer thickness regulating member 4. The remaining developer flows in the direction of arrow e, is uniformly mixed and agitated throughout, and is prevented from flowing in the axial direction of the sleeve 2.
第１現像剤室への現像剤供給は次の様にして行
われる。 The developer is supplied to the first developer chamber as follows.
第２現像剤室１２内に収納されている現像剤
は、撹拌供給部材１２の矢印ｄ方向への回転にて
現像剤供給路９側に搬送され、かつ磁気ローラ１
の矢印ａ方向の回転に基づく脈動作用で案内板８
の規制板６側の面に沿つて上昇し、現像剤供給路
９を通じて第１現像剤室７内に供給される。供給
量は、第１現像剤室７内において現像剤が減少し
た分量に対応する。 The developer stored in the second developer chamber 12 is conveyed to the developer supply path 9 side by rotation of the agitation supply member 12 in the direction of arrow d, and is conveyed to the developer supply path 9 side by the magnetic roller 1.
Guide plate 8 for pulsating action based on rotation in the direction of arrow a.
The developer rises along the surface on the regulating plate 6 side, and is supplied into the first developer chamber 7 through the developer supply path 9 . The supplied amount corresponds to the amount by which the developer in the first developer chamber 7 is reduced.
第３現像剤室１内に収納されている現像剤は、
仕切板１５を回転する撹拌供給部材の当接にて上
方に移動し、当接が解除された後仕切板１５の自
重及び第３現像剤室１１内の現像剤の重圧で下動
する仕切板１５の揺動にて現像剤補給路１６を通
じて第２現像剤室１０内に補給される。補給量は
第２現像剤室１０の内圧に対応して補給され、第
２現像剤室１０の上層部は常に空間部が確保され
ている。 The developer stored in the third developer chamber 1 is
The partition plate moves upward when the agitation supply member that rotates the partition plate 15 comes into contact with it, and after the contact is released, the partition plate moves downward due to the weight of the partition plate 15 and the heavy pressure of the developer in the third developer chamber 11. 15, the developer is replenished into the second developer chamber 10 through the developer supply path 16. The supply amount is replenished in accordance with the internal pressure of the second developer chamber 10, and a space is always maintained in the upper layer of the second developer chamber 10.
第３現像剤室１１内の現像剤がなくなると共に
第２現像剤室１０内の現像剤が減少すると、検出
部材１４の揺動が大きくなり、検出部材１４が第
２位置Y2まで下動して揺動されると第２、第３
現像剤室１０，１１内の現像剤のエンプテイが検
出され、外部に表示される。 When the developer in the third developer chamber 11 runs out and the developer in the second developer chamber 10 decreases, the swing of the detection member 14 increases, and the detection member 14 moves down to the second position Y2. When it is swung, the second and third
Empty developer in the developer chambers 10 and 11 is detected and displayed externally.
また、第１現像剤室７内の現像剤を交換する場
合は次の様に行なわれる。 Further, when the developer in the first developer chamber 7 is replaced, it is performed as follows.
手動回転用つまみ１８を矢印ｆ方向に回転させ
ることによりスリーブ２を矢印ｂと逆方向に回転
させることができ、したがつて第１現像剤室７内
の現像剤も矢印ｂと逆方向に搬送され、層厚規制
部材４の近傍に収集できる。この収集された現像
剤を掃除機又はシート状の物等を用いて除去する
ことにより第１現像剤室７内の現像剤を回収する
ことができる。また新しい現像剤を第１現像剤室
７内に投入する時は、スリーブ２の表面に適当の
量を保持せしめながら手動回転用つまみ１８を矢
印ｆと逆方向に回転させることにより、第１現像
剤室７内に現像剤を収納させることができる。こ
の収納された現像剤を均一にならすために、本装
置を予備作動させる。以上の様に交換する場合、
第２現像剤室１０内の現像剤の有無に関係なく作
業でき、常に良好な画質の複写画像を得ることが
できるものである。 By rotating the manual rotation knob 18 in the direction of arrow f, the sleeve 2 can be rotated in the direction opposite to arrow b, and therefore the developer in the first developer chamber 7 is also transported in the direction opposite to arrow b. and can be collected near the layer thickness regulating member 4. The developer in the first developer chamber 7 can be recovered by removing the collected developer using a vacuum cleaner, a sheet-like object, or the like. When introducing new developer into the first developer chamber 7, the manual rotation knob 18 is rotated in the opposite direction to the arrow f while holding an appropriate amount on the surface of the sleeve 2. Developer can be stored in the developer chamber 7. In order to even out the stored developer, the device is pre-operated. When replacing as above,
The operation can be performed regardless of the presence or absence of developer in the second developer chamber 10, and it is possible to always obtain a copy image of good quality.
発明の効果
以上の説明で明らかな様に、本発明によれば、
現像ローラの駆動手段又は現像ローラの回転と連
動される駆動部内に手動回転用つまみを設けるこ
とにより現像ローラのスリーブの回転に対し現像
剤の負荷が生じている状態でも、スリーブを回転
させて現像剤の回収又は投入を安全で容易に行な
うことができる。また、スリーブの駆動手段と現
像剤供給部材を連結せしめる減速手段内に手動回
転用つまみを設けたことにより、低トルクの力を
加えることでスリーブを回転させることができ、
作業効率の向上を図ることができる利点を有す
る。Effects of the Invention As is clear from the above explanation, according to the present invention,
By providing a manual rotation knob in the developing roller driving means or the driving unit that is linked to the rotation of the developing roller, the sleeve can be rotated and developed even when a load of developer is applied to the rotation of the sleeve of the developing roller. The agent can be collected or put in safely and easily. In addition, by providing a manual rotation knob in the deceleration means that connects the sleeve drive means and the developer supply member, the sleeve can be rotated by applying a low torque force.
This has the advantage of improving work efficiency.
第１図は本発明の一実施例における現像装置の
断面図、第２図は第１図の要部概略図である。
３……現像ローラ、４……層厚規制部材、７…
…第１現像剤室、１０……第２現像剤室、１２…
…現像剤供給部材、１８……手動回転用つまみ、
２０……感光体ドラム。
FIG. 1 is a sectional view of a developing device in an embodiment of the present invention, and FIG. 2 is a schematic diagram of the main part of FIG. 1. 3...Developing roller, 4...Layer thickness regulating member, 7...
...First developer chamber, 10...Second developer chamber, 12...
...Developer supply member, 18...Manual rotation knob,
20...Photosensitive drum.
Claims (1)
ための回転自在に設けられた現像ローラと、この
現像ローラ表面と対向して配設し、前記現像ロー
ラ上に保持搬送される現像剤の層厚を規制する層
厚規制部材と、現像剤搬送方向の前記層厚規制部
材上流側で前記現像ローラの軸方向に延在せし
め、かつ前記現像ローラの外周面に向かつて開口
する様に配設し、前記現像ローラにて搬送される
現像剤を収納する第１現像剤室と、この第１現像
剤室に現像剤を供給する現像剤供給部材を有する
第２現像剤室と、前記現像ローラの駆動手段内又
は前記現像ローラの回転と連動される駆動部内に
設けられた手動回転用つまみとを備えた現像装
置。 ２ 手動回転用つまみを現像ローラの駆動手段に
減速手段を介して設けた特許請求の範囲第１項記
載の現像装置。[Scope of Claims] 1. A rotatably provided developing roller for holding developer on its surface and circulating it in one direction, and a developing roller disposed opposite to the surface of this developing roller and held on the developing roller. a layer thickness regulating member that regulates the layer thickness of the developer to be transported; A second developer chamber, which is disposed so as to be open, and has a first developer chamber that stores the developer conveyed by the developing roller, and a developer supply member that supplies the developer to the first developer chamber. A developing device comprising: a developer chamber; and a manual rotation knob provided within a driving means for the developing roller or within a driving section that is interlocked with rotation of the developing roller. 2. The developing device according to claim 1, wherein the manual rotation knob is provided on the developing roller driving means via a deceleration means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23035886A JPS6383761A (en) | 1986-09-29 | 1986-09-29 | Developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23035886A JPS6383761A (en) | 1986-09-29 | 1986-09-29 | Developing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6383761A JPS6383761A (en) | 1988-04-14 |
| JPH0520752B2 true JPH0520752B2 (en) | 1993-03-22 |
Family
ID=16906609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23035886A Granted JPS6383761A (en) | 1986-09-29 | 1986-09-29 | Developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6383761A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5239345A (en) * | 1990-03-06 | 1993-08-24 | Oki Electric Industry Co., Ltd. | Image forming apparatus having function of dust removal |
| JP2515263Y2 (en) * | 1992-05-11 | 1996-10-30 | 日本車輌製造株式会社 | Aerial work vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS556371A (en) * | 1978-06-29 | 1980-01-17 | Hitachi Metals Ltd | Magnetic brush developing device |
| JPS56114969A (en) * | 1980-02-15 | 1981-09-09 | Canon Inc | Toner replenishing device |
| JPS56119156A (en) * | 1980-02-25 | 1981-09-18 | Ricoh Co Ltd | Controller for developer concentration |
| JPS6025074U (en) * | 1983-07-20 | 1985-02-20 | 富士電機株式会社 | Cup-type vending machine water supply circuit |
| JPS61158359A (en) * | 1984-12-28 | 1986-07-18 | Minolta Camera Co Ltd | Dry type developer |
-
1986
- 1986-09-29 JP JP23035886A patent/JPS6383761A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS556371A (en) * | 1978-06-29 | 1980-01-17 | Hitachi Metals Ltd | Magnetic brush developing device |
| JPS56114969A (en) * | 1980-02-15 | 1981-09-09 | Canon Inc | Toner replenishing device |
| JPS56119156A (en) * | 1980-02-25 | 1981-09-18 | Ricoh Co Ltd | Controller for developer concentration |
| JPS6025074U (en) * | 1983-07-20 | 1985-02-20 | 富士電機株式会社 | Cup-type vending machine water supply circuit |
| JPS61158359A (en) * | 1984-12-28 | 1986-07-18 | Minolta Camera Co Ltd | Dry type developer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6383761A (en) | 1988-04-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5666618A (en) | Developing device with agitation member and elastic member | |
| JP3049860B2 (en) | Developing device | |
| JPH0520752B2 (en) | ||
| JP3859101B2 (en) | Development device | |
| JP4180687B2 (en) | Toner supply method and apparatus | |
| JP4038297B2 (en) | Image forming apparatus | |
| JP3940543B2 (en) | Developing device and image forming apparatus | |
| JPS58149079A (en) | Developing device for electrostatic latent image | |
| JP3466017B2 (en) | Toner supply device | |
| JP3283387B2 (en) | Developing device | |
| JPH02760Y2 (en) | ||
| JP3618949B2 (en) | Image forming apparatus | |
| JPS6333225Y2 (en) | ||
| JPS6233583B2 (en) | ||
| JPH0542441Y2 (en) | ||
| JPH08305153A (en) | Developing device | |
| JPH0350577A (en) | Hopper device | |
| JPH06314021A (en) | Developing device | |
| JPH0520751B2 (en) | ||
| JPH02181758A (en) | Method for recovering developer in developing device | |
| JPH08305147A (en) | Developing device | |
| JPS62231976A (en) | Developer replenishing instrument | |
| JPS6383758A (en) | Developing device | |
| JPH03269459A (en) | Developing device | |
| JPH02205875A (en) | Developing device |