JPH0332068B2 - - Google Patents
Info
- Publication number
- JPH0332068B2 JPH0332068B2 JP57046525A JP4652582A JPH0332068B2 JP H0332068 B2 JPH0332068 B2 JP H0332068B2 JP 57046525 A JP57046525 A JP 57046525A JP 4652582 A JP4652582 A JP 4652582A JP H0332068 B2 JPH0332068 B2 JP H0332068B2
- Authority
- JP
- Japan
- Prior art keywords
- developing
- toner
- developer
- roller
- commutative
- 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
- 108091008695 photoreceptors Proteins 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 12
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 description 6
- 210000005069 ears Anatomy 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0896—Arrangements or disposition of the complete developer unit or parts thereof not provided for by groups G03G15/08 - G03G15/0894
- G03G15/0898—Arrangements or disposition of the complete developer unit or parts thereof not provided for by groups G03G15/08 - G03G15/0894 for preventing toner scattering during operation, e.g. seals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Brush Developing In Electrophotography (AREA)
Description
【発明の詳細な説明】
本発明は電子写真装置等に使用される乾式現像
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dry developing device used in electrophotographic devices and the like.
第１図に従来の乾式現像装置を示す。符号１は
感光体ドラムを示し、複写に際しては示矢方向に
回転させられる。この感光体ドラム１の周面回転
方向上、帯電チヤージヤー２の後方、露光部１３
と転写チヤージヤー３が配されている転写部との
間の位置に該感光体ドラム１と対向して設けられ
ているのが乾式現像装置４である。その構成につ
いて簡単に説明すると、感光体ドラム１に対向し
て現像ローラ５が配設されている。この現像ロー
ラ５は対向部位が感光体ドラム１と同一方向に移
動する向き、つまり示矢方向に回転される円筒状
の現像スリーブ５ａと、この現像スリーブ５ａの
内側に不動状態に設けられている磁石群５ｂ等に
より構成されている。 FIG. 1 shows a conventional dry developing device. Reference numeral 1 indicates a photosensitive drum, which is rotated in the direction of the arrow during copying. On the rotational direction of the circumferential surface of the photosensitive drum 1, behind the charging charger 2, the exposure section 13
A dry developing device 4 is provided facing the photosensitive drum 1 at a position between the photoreceptor drum 1 and the transfer section where the transfer charger 3 is disposed. To briefly explain its structure, a developing roller 5 is disposed facing the photosensitive drum 1. The developing roller 5 includes a cylindrical developing sleeve 5a whose opposing portion is rotated in the same direction as the photosensitive drum 1, that is, in the direction of the arrow, and is immovably provided inside the developing sleeve 5a. It is composed of a magnet group 5b and the like.
この磁石群５ｂは、第２図に拡大して示される
ように、感光体ドヤラムと現像ローーラとの対向
領域で構成される現像領域に対峙して配置され、
現像領域においてトナーの穂を立てて現像に寄与
する主極５b1と、この主極５b1を通る仮想円ｋ上
に相互に間隔をおいて不動状態に配設されている
トナーを搬送する４個の極から成る。これらの各
補極を現像スリーブ５ａの回転方向順に符号５
b2，５b3，５b4，５b5で示す。この中、補極５b2
は現像ローラの現像領域対向部より下流側に設け
られている。 As shown in an enlarged view in FIG. 2, this magnet group 5b is arranged to face a developing area constituted by an opposing area between a photoreceptor drum and a developing roller.
A main pole 5b1 that contributes to development by raising spikes of toner in the development area, and a toner transporter 4 that is disposed immobile at a distance from each other on a virtual circle k passing through this main pole 5b1 . Consists of individual poles. These commutative poles are designated by reference numeral 5 in order of the rotational direction of the developing sleeve 5a.
Indicated by b 2 , 5b 3 , 5b 4 , and 5b 5 . Among these, the interpole 5b 2
is provided downstream from the developing area facing portion of the developing roller.
さらに、この現像ローラ５に対向して、現像剤
供給手段としての汲み上げローラ６が設けてあ
る。この汲み上げローラ６は多数の放射状のブレ
ードを有し、これらのブレード間にトナーを汲み
込んで示矢方向への回転ととももに現像ローラ５
へトナーを供給する。 Further, a pumping roller 6 as a developer supplying means is provided opposite the developing roller 5. This pumping roller 6 has a large number of radial blades, and pumps toner between these blades and as it rotates in the direction of the arrow, the developing roller 5
Supply toner.
これら、現像ローラ５及び汲み上げローラ６
は、感光体ドラム１との対向部位が開口している
ケーシング７により覆われている。このケーシン
グ７上であつて、汲み上げローラ６の右上方部に
も開口が形成されていて、この開口部に補給タン
ク８が接続されており、補給ローラ８ａの回転に
応じて該補給タンク８より汲み上げローラ６にト
ナーＴが注がれる。 These, the developing roller 5 and the pumping roller 6
is covered by a casing 7 that is open at a portion facing the photoreceptor drum 1 . An opening is formed on the casing 7 and also in the upper right part of the pumping roller 6, and a replenishment tank 8 is connected to this opening. Toner T is poured onto the pumping roller 6.
なお、補給タンク８へのトナーＴの補給はトナ
ーホツパー９よりなされるものであり、補給タン
ク８内のトナーＴは常時、アジテー１０により撹
拌されている。 The toner T is replenished into the replenishment tank 8 through a toner hopper 9, and the toner T in the replenishment tank 8 is constantly stirred by an agitator 10.
ケーシング７内において、汲み上げローラ６よ
り現像スリーブ５ａに供給されたトナーＴは磁石
群５ｂの磁気的吸引を受けて磁気ブラシを形成
し、この磁気ブラシが該現像スリーブ５ａの回動
とともに順次感光体ドラム１へ向けて移動させら
れる。その途中、現像スリーブ５ａ上のトナー
は、ブレード１１により穂の高さを整えられ、然
る後現像に供される。符号１２はケーシング７内
のトナーの流れを制御するセパレータを示す。 In the casing 7, the toner T supplied from the pumping roller 6 to the developing sleeve 5a is magnetically attracted by the magnet group 5b to form a magnetic brush, and as the developing sleeve 5a rotates, the toner T is sequentially applied to the photoreceptor. It is moved toward drum 1. During this process, the height of the toner on the developing sleeve 5a is adjusted by the blade 11, and then the toner is subjected to development. Reference numeral 12 indicates a separator that controls the flow of toner within the casing 7.
露光部１３は、当該乾式現像装置４と帯電チヤ
ージヤー２との間に位置し、露光光学系１４等を
介して原稿光像が照射されて、この時形成された
静電潜像が該乾式現像装置４によりトナー像とし
て顕像化される。このトナー像は途中、転写前露
光ランプ１５による光の照射をを受けて感光体ド
ラム１との吸着力を転写に適するレベルまで弱め
されられ、然る後、転写チヤージヤー３部を通過
する間に転写紙に転写される。 The exposure section 13 is located between the dry developing device 4 and the charging charger 2, and is irradiated with a light image of the document via the exposure optical system 14 etc., and the electrostatic latent image formed at this time is transferred to the dry developing device 4. The device 4 visualizes it as a toner image. On the way, this toner image is irradiated with light from a pre-transfer exposure lamp 15 to weaken the adhesion force with the photoreceptor drum 1 to a level suitable for transfer, and then, while passing through three transfer chargers, Transferred to transfer paper.
ところで、上記従来技術には次の欠点がある。
つまり、現像領域にて感光体ドラム１に対向して
開口部を形成しているケーシング７該開口部の下
方端部７ａと感光体ドラム１との間は顕像化され
たトナー像を乱してはらないという配慮から隙間
が設けられており、この隙間からトナーの微粉が
漏出飛散し転写前露光ランプ１５の一部に降りか
かるのである。その結果、現像ローラ５の軸長手
方向に長さを有する上記転写前露光ランプ１５は
汚れてしまい該露光ランプ１５の光の照射量が変
化する。このため転写においての適正レベルが維
持できなくなり画質に異常が生じる。さらに、上
記落下トナーは、転写部に配設されている転写チ
ヤージヤーや転写紙ガイド（図示されず）上にも
落下して付着し、転写チヤージヤーの作用をその
長手方向で不均衡にするとともに転写紙にも付着
して転写紙を汚してしまうのである。 However, the above conventional technology has the following drawbacks.
In other words, the developed toner image is disturbed between the lower end 7a of the opening of the casing 7, which forms an opening facing the photoreceptor drum 1 in the development area, and the photoreceptor drum 1. A gap is provided in order to prevent the toner from falling, and fine toner powder leaks and scatters from this gap and lands on a part of the pre-transfer exposure lamp 15. As a result, the pre-transfer exposure lamp 15, which has a length in the longitudinal direction of the axis of the developing roller 5, becomes dirty and the amount of light irradiated by the exposure lamp 15 changes. As a result, an appropriate level of transfer cannot be maintained, resulting in abnormal image quality. Furthermore, the fallen toner also falls and adheres to the transfer charger and transfer paper guide (not shown) disposed in the transfer section, making the action of the transfer charger imbalanced in the longitudinal direction and transferring the toner. It also adheres to the paper and stains the transfer paper.
本発明は上記従来技術における問題点に着目し
てなされたもので、ケーシング下端部の隙間から
のトナー微粉の外部への飛散を防止することので
きる乾式現像装置を提供することを目的とする。 The present invention has been made in view of the above-mentioned problems in the prior art, and it is an object of the present invention to provide a dry type developing device that can prevent fine toner powder from scattering to the outside from the gap at the lower end of the casing.
以下、本発明を詳細に説明する。 The present invention will be explained in detail below.
本発明に係る乾式現像装置は、補極の対向部若
しくは該極近傍でかつ、該補極よりも上流、しか
も、開口部中、現像領域よりも現像ローラの回転
方向下流の位置にて上記現像ローラ上の現像剤と
接触するとともに、他端側がケーシングに固定さ
れ、上記補極における現像剤の穂立ちによつて生
じた飛散トナーを現像装置内にシールするシール
ル部材を有することを特徴とする。 The dry-type developing device according to the present invention performs the development at a position opposite to or very close to the commutative electrode, upstream of the commutative pole, and downstream of the developing area in the rotational direction of the developing roller in the opening. It is characterized by having a seal member that comes into contact with the developer on the roller, has its other end fixed to the casing, and seals scattered toner generated by spikes of developer on the counter electrode into the developing device. .
実施例について説明すると、本発明にかかるシ
ール部材の一例としてのブラシは第２図に符号１
６で示す。このブラシ１６は現像スリーブ５ａ
上、補極５b2と対向する位置にて当該現像スリー
ブ５ａの回転方向にそう順方向に向けて配置され
ていて現像スリーブ若しくは現像スリーブ上のト
ナーに接触するようにして、かつ、基端部をケー
シング７の下方端部７ａに固植して設けられてい
る。このブラシ１６は、現像スリーブ５ａの軸長
手方向にわたつて設けられており、線径は約
100μm、自由長部分の長さは約７mm、植毛密度は
１平方インチあたり２〜３万本で腰の柔かい例え
ばアクリル系の繊維が使用される。 To explain an embodiment, a brush as an example of a sealing member according to the present invention is shown with reference numeral 1 in FIG.
Indicated by 6. This brush 16 is the developing sleeve 5a.
Upper, the commutative electrode 5b is disposed so as to face forward in the rotational direction of the developing sleeve 5a at a position facing the 2 , so as to come into contact with the developing sleeve or the toner on the developing sleeve, and the proximal end portion is fixedly planted on the lower end 7a of the casing 7. This brush 16 is provided across the axial longitudinal direction of the developing sleeve 5a, and has a wire diameter of approximately
100 μm, the length of the free length part is approximately 7 mm, the density of flocking is 20,000 to 30,000 per square inch, and soft fibers such as acrylic fibers are used.
上記位置にブラシ１６を設けた理由は、補極５
b2に対応した現像ローラ５上でトナーの穂立ちＱ
が生じるので、この穂立ちＱの前方位置でシール
しようとの考えによる。つまり、ケーシング下端
部より外部へ飛散するところの上記穂立ちに伴な
うトナークラウドの大部分をこのブラシ１６で捕
獲し、シールするのである。例えば現像スリーブ
５ａ上のトナーは、主極５b1の磁界によりナーが
現像スリーブ５ａに吸着されている。現像領域に
おいては磁気ブラシのが穂立ち上つており、その
状態で現像に供されるが主極５b1と補極５b2との
中間位置では穂は倒れた状態になる。そして、補
極５b2の磁界が強く作用する領域に入ると再び穂
が起きる。そして、上記した如く、この穂立ちの
際に、その先端部のトナーが分離しやすい状態に
なり、あるものは分離して飛散し、ケーシングの
下端部の隙間より落下して前述した従来技術に係
る問題をひき起していたのである。 The reason why the brush 16 is provided in the above position is that
Toner spikes Q on the developing roller 5 corresponding to b 2
This is due to the idea of sealing at the front position of the standing ear Q. In other words, the brush 16 captures and seals most of the toner cloud that accompanies the above-mentioned spikes and scatters outward from the lower end of the casing. For example, the toner on the developing sleeve 5a is attracted to the developing sleeve 5a by the magnetic field of the main pole 5b1 . In the developing area, the magnetic brush is raised up and used for development in that state, but at an intermediate position between the main pole 5b1 and the subpole 5b2 , the magnetic brush is in a fallen state. Then, when it enters a region where the magnetic field of the copole 5b2 acts strongly, the ears will rise again. As mentioned above, when the spikes stand, the toner at the tip becomes easy to separate, and some of it separates and scatters, falling through the gap at the lower end of the casing, resulting in the above-mentioned prior art. This was causing the problem.
本発明に係るシール部材の一例としてのブラシ
１６は、穂が倒れた状態のトナーに軽く接触して
いて穂の先端から分離した或いは分離する直前の
トナーを捕獲する。つまり、仮にブラシ１６を補
極５b2の極く近傍にて現像スリーブ５ａに接触す
る様に配置した場合には穂立ちによる分離が生ず
る直前又は直後のトナーを捕獲できるし、補極５
b2の近傍であつて、かつ、主極５b1寄りの部位に
て現像スリーブ５ａに接触する様に配置した場合
には一旦分離飛散したトナーを外部へ出さないよ
うに捕獲するシール機能を果たす。 The brush 16, which is an example of the sealing member according to the present invention, is in light contact with the toner in a state where the ears have fallen down, and captures the toner that has separated from the tips of the ears or is about to separate. In other words, if the brush 16 is arranged so as to be in contact with the developing sleeve 5a very close to the commutative pole 5b2 , it is possible to capture the toner just before or after separation due to blistering occurs, and the toner can be captured by the commutative pole 5b2.
If it is placed in the vicinity of b 2 and in contact with the developing sleeve 5a near the main pole 5b 1 , it will function as a seal to trap the separated and scattered toner to prevent it from coming out. .
使用を継続するに伴ない、ブラシ１６に捕獲さ
れたトナーは次第に蓄積され、トナーが溜まるこ
とが懸念されるがこの点に関してはブラシ１６の
植毛密度を適当に設定するとともに腰の柔かい繊
維を選択することにより問題は生じない。さら
に、ブラシ材料として、使用するトナーの帯電系
列と近いものを用いれば、トナーとブラシ間に電
気的吸引力が作用し難いのでトナーを蓄積させな
いためには一層効果的である。 As the brush 16 continues to be used, the toner trapped in the brush 16 will gradually accumulate, and there is a concern that the toner will accumulate.In this regard, the density of the brush 16 should be set appropriately and fibers with soft waist should be selected. No problem will arise by doing so. Furthermore, if a material similar to the charging series of the toner to be used is used as the brush material, it is more effective to prevent toner from accumulating since it is difficult for an electric attraction force to act between the toner and the brush.
実験結果ではブラシ１６で良好な結果が出た
が、このブラシ１６に代えて、シール部材として
腰の弱いフイルム状の弾性材を用いてもよく、穂
が倒れた状態のトナーに軽く接触させて同様なな
シール効果を得ることができると考えられる
なお、現像装置全体についてのトナーの漏出と
いうことを考えると、当然ケーシング下端部ばか
りでなく、ケーシング上端部７ｂについても配慮
する必要がある。けだし、トナークラウドの発生
は補極５b2に対応した現像ローラ５上にだけ起こ
るのではなく、例えば補極５b5い対応した現像ロ
ーラ５上での穂立ちＫに伴なつても生ずるし、
又、現像領域の入口で感光体ドラム１にトナーＴ
が衝突する時の衝撃によつても生ずるからであ
る。 In the experimental results, good results were obtained with the brush 16, but instead of the brush 16, a weak film-like elastic material may be used as a sealing member, and the brush 16 may be used as a sealing member, and the brush may be lightly contacted with the toner in a fallen state. It is thought that a similar sealing effect can be obtained. Note that considering the leakage of toner from the entire developing device, it is naturally necessary to consider not only the lower end of the casing but also the upper end 7b of the casing. However, the generation of toner cloud does not only occur on the developing roller 5 corresponding to the commutative electrode 5b2 , but also occurs, for example, due to the spike K on the developing roller 5 corresponding to the commutative electrode 5b5.
Also, toner T is applied to the photoreceptor drum 1 at the entrance of the development area.
This is because it is also caused by the impact when the two collide.
そして、上記のトナークラウドはケーシング７
の上端部７ｂと感光体ドラム１との間の間隙から
外部へ漏出して装置内部特に光学系等を汚す等の
可能性がある。そこで、その対策として、基端部
を上端部７ｂに固定されていて、自由端が感光体
ラム１の周面に接触する様にして入口シール部材
２０を設ければ現像装置のシーリングはより完全
に近いものにすることができる。このシール部材
２０は感光体ドラム１上は静電潜像を乱さないよ
うにするため、絶縁性のものを用い、又、感光体
ドラム１との摩擦的な接触により帯電し難い材料
を選定する必要がある。例えば絶縁性に関して
は、感光体ドラム１と300mm巾で接触したとき
109Ω以上の抵抗値を示す如きフイルム状若しく
はブラシ状の部材がよい。具体的には例えばテフ
ロン（商品名）による前記ブラシ１６に準じた構
成のブラシを用いる。 And the above toner cloud is casing 7
There is a possibility that the liquid may leak out from the gap between the upper end portion 7b and the photosensitive drum 1 and contaminate the inside of the apparatus, especially the optical system. Therefore, as a countermeasure, if the inlet sealing member 20 is provided so that the base end is fixed to the upper end 7b and the free end is in contact with the circumferential surface of the photoreceptor ram 1, the sealing of the developing device will be more complete. It can be made close to. This sealing member 20 is made of an insulating material so as not to disturb the electrostatic latent image on the photoreceptor drum 1, and a material that is not easily charged by frictional contact with the photoreceptor drum 1 is selected. There is a need. For example, regarding insulation, when in contact with photoreceptor drum 1 at a width of 300 mm,
A film-like or brush-like member exhibiting a resistance value of 10 9 Ω or more is preferable. Specifically, for example, a brush made of Teflon (trade name) and having a structure similar to the brush 16 described above is used.
或いは、２成分系のトナーを用いる場合には上
端部７ｂに磁石を配置し、トナーのキヤリアを上
記磁石に吸着させて入口シール部材２０を構成す
る態様も考えられる。 Alternatively, when a two-component toner is used, a mode may be considered in which a magnet is disposed at the upper end portion 7b and the toner carrier is attracted to the magnet to form the inlet sealing member 20.
第１図は、従来技術に係る乾式現像装置の全体
構成図、第２図は本発明に係る乾式現像装置の主
要部構成図である。
５……現像ローラ、５b2……補極、１６……
（シール部材の一例としての）ブラシ。
FIG. 1 is an overall configuration diagram of a dry type developing device according to the prior art, and FIG. 2 is a configuration diagram of main parts of a dry type developing device according to the present invention. 5...Developing roller, 5b 2 ...Commuting pole, 16...
A brush (as an example of a sealing member).
Claims (1)
持した感光体ドラムに対向した現像領域にて該現
像剤を上記感光体ドラムに供給する現像ローラ
と、該現像ローラに現像剤を供給する現像剤供給
手段と、上記現像領域を含む上記感光体ドラムと
の対向部位に開口部を有するとともに、上記現像
ローラ及び上記現像剤供給手段を覆つているケー
シングを有し、上記固定磁石群の一つは上記現像
領域よりも該現像ローラ回転方向下流に配置され
ている補極である乾式現像装置において、 上記補極の対向部若しくは該補極近傍でかつ、
該補極よりも上流、しかも、上記開口部中、上記
現像領域よりも現像ローラの回転方向下流の位置
にて上記現像ローラ上の現像剤と接触するととも
に、他端側が上記ケーシングに固定され、上記補
極における現像剤の穂立ちによつて生じた飛散ト
ナーを現像装置内にシールするシール部材を有す
ることを特徴とする乾式現像装置。[Scope of Claims] 1. A developing roller having a group of fixed magnets disposed therein and supplying the developer to the photosensitive drum in a developing area facing the photosensitive drum carrying the developer on its surface; A developer supplying means for supplying developer to the roller and an opening at a portion facing the photoreceptor drum including the development area, and a casing covering the development roller and the developer supplying means. , in a dry developing device in which one of the fixed magnet groups is a commutative pole disposed downstream of the developing area in the rotational direction of the developing roller, at an opposing portion of the commutative pole or near the commutative pole, and
contacting the developer on the developing roller at a position upstream of the commutative electrode and further downstream in the rotational direction of the developing roller from the developing area in the opening, and having the other end fixed to the casing; A dry type developing device comprising a sealing member that seals scattered toner generated by spikes of developer on the counter electrode into the developing device.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4652582A JPS58163969A (en) | 1982-03-24 | 1982-03-24 | Dry type developing device |
| US06/472,525 US4592653A (en) | 1982-03-12 | 1983-03-07 | Dry process developing apparatus |
| DE19833308756 DE3308756A1 (en) | 1982-03-12 | 1983-03-11 | DRY DEVELOPMENT DEVICE |
| DE3348064A DE3348064C2 (en) | 1982-03-12 | 1983-03-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4652582A JPS58163969A (en) | 1982-03-24 | 1982-03-24 | Dry type developing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58163969A JPS58163969A (en) | 1983-09-28 |
| JPH0332068B2 true JPH0332068B2 (en) | 1991-05-09 |
Family
ID=12749689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4652582A Granted JPS58163969A (en) | 1982-03-12 | 1982-03-24 | Dry type developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58163969A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61204657A (en) * | 1985-03-08 | 1986-09-10 | Hitachi Ltd | Preventing device for toner scatter of developing device |
| US4679928A (en) * | 1985-06-13 | 1987-07-14 | Xerox Corporation | Development apparatus |
| JPS62103063U (en) * | 1985-12-17 | 1987-07-01 | ||
| JPS63139376A (en) * | 1986-12-02 | 1988-06-11 | Ricoh Co Ltd | Multicolor developing device |
| JPH0755565Y2 (en) * | 1987-04-27 | 1995-12-20 | 三田工業株式会社 | Development device |
| JP2007121710A (en) * | 2005-10-28 | 2007-05-17 | Canon Inc | Developer sealing member, manufacturing method for developer sealing member, process cartridge and electrophotographic image forming apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5068532A (en) * | 1973-10-23 | 1975-06-07 | ||
| JPS56149073A (en) * | 1980-03-31 | 1981-11-18 | Ricoh Co Ltd | Dry type developing device |
| JPS56158357A (en) * | 1980-05-10 | 1981-12-07 | Ricoh Co Ltd | Developing device |
-
1982
- 1982-03-24 JP JP4652582A patent/JPS58163969A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5068532A (en) * | 1973-10-23 | 1975-06-07 | ||
| JPS56149073A (en) * | 1980-03-31 | 1981-11-18 | Ricoh Co Ltd | Dry type developing device |
| JPS56158357A (en) * | 1980-05-10 | 1981-12-07 | Ricoh Co Ltd | Developing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58163969A (en) | 1983-09-28 |
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