JPS5915954A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPS5915954A JPS5915954A JP57125516A JP12551682A JPS5915954A JP S5915954 A JPS5915954 A JP S5915954A JP 57125516 A JP57125516 A JP 57125516A JP 12551682 A JP12551682 A JP 12551682A JP S5915954 A JPS5915954 A JP S5915954A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- opening
- developing
- developing device
- partition wall
- 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
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
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
- G03G15/0865—Arrangements for supplying new developer
- G03G15/0867—Arrangements for supplying new developer cylindrical developer cartridges, e.g. toner bottles for the developer replenishing opening
- G03G15/087—Developer cartridges having a longitudinal rotational axis, around which at least one part is rotated when mounting or using the cartridge
- G03G15/0872—Developer cartridges having a longitudinal rotational axis, around which at least one part is rotated when mounting or using the cartridge the developer cartridges being generally horizontally mounted parallel to its longitudinal rotational axis
-
- 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
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
- G03G15/0865—Arrangements for supplying new developer
- G03G15/0867—Arrangements for supplying new developer cylindrical developer cartridges, e.g. toner bottles for the developer replenishing opening
- G03G15/0868—Toner cartridges fulfilling a continuous function within the electrographic apparatus during the use of the supplied developer material, e.g. toner discharge on demand, storing residual toner, acting as an active closure for the developer replenishing opening
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/06—Developing structures, details
- G03G2215/066—Toner cartridge or other attachable and detachable container for supplying developer material to replace the used material
- G03G2215/0663—Toner cartridge or other attachable and detachable container for supplying developer material to replace the used material having a longitudinal rotational axis, around which at least one part is rotated when mounting or using the cartridge
- G03G2215/0665—Generally horizontally mounting of said toner cartridge parallel to its longitudinal rotational axis
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/06—Developing structures, details
- G03G2215/066—Toner cartridge or other attachable and detachable container for supplying developer material to replace the used material
- G03G2215/0663—Toner cartridge or other attachable and detachable container for supplying developer material to replace the used material having a longitudinal rotational axis, around which at least one part is rotated when mounting or using the cartridge
- G03G2215/0675—Generally cylindrical container shape having two ends
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/06—Developing structures, details
- G03G2215/066—Toner cartridge or other attachable and detachable container for supplying developer material to replace the used material
- G03G2215/0685—Toner cartridge or other attachable and detachable container for supplying developer material to replace the used material fulfilling a continuous function within the electrographic apparatus during the use of the supplied developer material, e.g. toner discharge on demand, storing residual toner, not acting as a passive closure for the developer replenishing opening
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は電子写真複写機、静電記録機等の画像形成装置
に適用し、像担持体上に形成された潜像を顕像化する現
像装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a developing device which is applied to an image forming apparatus such as an electrophotographic copying machine or an electrostatic recording machine and which visualizes a latent image formed on an image carrier.
従来、この糧の現像装置(以下、現像器とも呼ぶ)に対
するトナー補給は9袋の封を切ってトナー、に現像器に
落し込む補給方法が簡単であり一般的である。ところが
、この補給方法では補給時におけるトナー飛散が激しく
、操作者の手や衣服を汚す等のトラブルが生じ不快な作
業であった。Conventionally, a simple and common method for replenishing toner for this developing device (hereinafter also referred to as a developing device) is to open nine bags and drop the toner into the developing device. However, with this replenishment method, the toner scatters violently during replenishment, causing troubles such as staining the operator's hands and clothes, making the operation unpleasant.
そこで、このトラブルを軽減するために円筒状のトナー
カートリッジを用いることが考えられている。このトナ
ーカートリッジは開口を上向きとし該開口をふさいでい
るテープを剥離し表から現像器に挿入し、最後まで入っ
たところで円筒の中心軸の回りに180°回転させ、開
口を下方に向けてトナーを現像器の中に落下させるもの
で、トナーは密閉空間の中で落下するため前記トラブル
を生じない。しかし、このカートリッジ式現像器に於い
ては、トナーの貯蔵空間の他にカートリッジ収容空間が
必要となるため、現像器が大きくなる欠点がある。更に
、これはカートリッジ式現像器に限定されないが、現像
スリーブ(説明は後述する)と、現像スリーブ上のトナ
ー付着量を規制するために現像スリーブとわずかな間隔
を保って設けられている仕切板との間のトナーは、上部
のトナーの重さがかかつていることと、わずかな間隔を
通過させられることにより多大の圧力を受はブロッキン
グし易い欠点があり9%に省エネ性に優れた圧力定着方
式に用いるトナーに対しては実用困難であった。Therefore, in order to alleviate this problem, it has been considered to use a cylindrical toner cartridge. This toner cartridge has its opening facing upward, peels off the tape blocking the opening, inserts it into the developing device from the front side, and when it is fully inserted, rotates it 180 degrees around the central axis of the cylinder, and with the opening facing downward, removes the tape blocking the opening and inserts the toner cartridge. The toner is dropped into the developing device, and the above-mentioned trouble does not occur because the toner falls in a closed space. However, this cartridge-type developing device requires a cartridge housing space in addition to the toner storage space, which has the disadvantage that the developing device becomes large. Furthermore, this is not limited to cartridge-type developing devices, but includes a developing sleeve (description will be given later) and a partition plate that is provided at a small distance from the developing sleeve in order to regulate the amount of toner adhering to the developing sleeve. The toner between the toner and the toner is subject to a large amount of pressure due to the weight of the toner at the top and because it is passed through a small gap, and the disadvantage is that it is easy to block. It was difficult to put this method into practical use with toners used in fixing systems.
本発明は上記の欠点を解消し小形でトナーブロッキング
が生じないようにした現像装置を提供することを目的と
する。SUMMARY OF THE INVENTION It is an object of the present invention to provide a developing device which eliminates the above-mentioned drawbacks and is compact and free from toner blocking.
以下9本発明の実施例を図面について説明する。Hereinafter, nine embodiments of the present invention will be described with reference to the drawings.
第1図は第1実施例を示す横断正面図、第2図はトナー
重量補給部の斜視図、第6図はトナー落下穴部の拡大断
面図である。1は像担持体としての感光ドラム、2は現
像器、6は現像器のノ・ウジング、4は矢印A方向に現
像器2に挿入されるトナーカートリッジで、トナーを補
給する開口4aと。FIG. 1 is a cross-sectional front view showing the first embodiment, FIG. 2 is a perspective view of a toner weight supply section, and FIG. 6 is an enlarged sectional view of a toner drop hole section. Reference numeral 1 denotes a photosensitive drum as an image bearing member, 2 a developing device, 6 a nozzle for the developing device, and 4 a toner cartridge inserted into the developing device 2 in the direction of arrow A, and an opening 4a for replenishing toner.
トナーカートリッジを正確に挿入するための凸部4bが
設けられている。5はトナーカートリッジ4を保持する
現像器隔壁で、トナーカートリッジ4を奥まで挿入した
時、その長方形開口4aに面する領域内に多数の円錐形
孔5aがあけられている。また前記凸部4bに対応して
凹部5bが設けられており、トナーカー) IJツジは
矢印B方向の動きに対しては隔壁5に拘束されている。A protrusion 4b is provided for accurately inserting the toner cartridge. Reference numeral 5 denotes a developer partition wall that holds the toner cartridge 4, and has a large number of conical holes 5a in an area facing the rectangular opening 4a when the toner cartridge 4 is fully inserted. Further, a recess 5b is provided corresponding to the projection 4b, and the toner car (IJ) is restrained by the partition wall 5 against movement in the direction of arrow B.
6け前記隔壁5を回転可能に支持する軸受で、その外周
はハウジング3に固定されている。7は軸受6へのトナ
ー浸入を防ぐシール部材である。8け隔壁5の後端に形
成されたギア5Cと噛みあうギア8at有する扇形の揺
動板で、扇の要に相当する部分が現像器後側板6bに固
定されたロータリーソレノイド9の軸9aに固定されて
いる。10は感光ドラム1に隙間g1にあけて並設した
非磁性体製の現像スリーブで、矢示方向に回転自在に支
持されその内部には複数の磁極を有する磁石11が収容
されている。12ばその下部先端が現像スリーブ10と
決められた間隙g2?形成している仕切板で。Six bearings rotatably support the partition walls 5, and their outer peripheries are fixed to the housing 3. A seal member 7 prevents toner from entering the bearing 6. It is a fan-shaped swinging plate having a gear 8at that meshes with a gear 5C formed at the rear end of the 8-shaped bulkhead 5, and a portion corresponding to the key point of the fan is connected to the shaft 9a of the rotary solenoid 9 fixed to the rear side plate 6b of the developer. Fixed. Reference numeral 10 denotes a developing sleeve made of a non-magnetic material that is arranged in parallel with the photosensitive drum 1 with a gap g1, and is rotatably supported in the direction of the arrow, and a magnet 11 having a plurality of magnetic poles is housed inside the sleeve. 12 is the gap g2 where the lower tip of the developing sleeve 10 is determined? With the forming partition plate.
ハウジング背面板ろCと共にトナー貯蔵室(以下。Together with the housing back plate filter C, the toner storage chamber (hereinafter referred to as the toner storage chamber).
ホッパーと呼ぶ)13を構成している。背面板6Cの中
央には両側部が平行に背後に突出した窪み6dが形成さ
れており、第4図に示すようにこの窪み6dの両側部を
外側から挾むようにランプLと受光素子Pを備えたフォ
トカプラー14が配設されている。(referred to as hopper) 13. A recess 6d is formed in the center of the back plate 6C, with both sides parallel to each other and protruding backwards.As shown in FIG. 4, a lamp L and a light receiving element P are provided to sandwich both sides of the recess 6d from the outside. A photocoupler 14 is provided.
本発明の第1実施例は上記の構成であるから。This is because the first embodiment of the present invention has the above configuration.
ホッパー13内のトナーTは、ホッパー下部の開口部1
3aから現像スリーブ10表面に供給され。The toner T in the hopper 13 is removed from the opening 1 at the bottom of the hopper.
3a to the surface of the developing sleeve 10.
現像スリーブ10内の複数の磁極を有する磁石11の磁
気力によって反時計方向に回転するスリーブ表面に吸着
されて運ばれる。ここで、仕切板11の下部先端は現像
スリーブ1L;0側に屈折して、現像スリーブ10との
間に決められた間隙g2が形成されているため、スリー
ブ10上のトナー伺着貴が規制されている。現像スリー
ブ10上のトナーは、スリーブが感光ドラム1に最も近
接する位置で感光ドラム1表面に接触し感光体上の静電
潜像を現像する。現像の繰返しにより、ホッパー16内
のトナーが減少すると、背面板3Cの窪み部3dに埋も
れていたトナーも磁気力によシスリーブ側に吸引され、
この窪み部ろdをはさむ様に配置されたフォトカプラー
14が残留トナー量が設定値を下回ったことを検知し、
トナー不足信号が図示せぬ制御回路に入力される。この
信号により利御回路はロータリーソレノイド9を励起し
、その軸9aに回転力を与えると、この軸9aと結合さ
れた扇形の揺動板8が矢印C方向に規定角度回転し静止
する。同時に揺動板8のギアと噛み合うギア5cKよっ
て隔壁5及びトナーカートリッジ4が半回転し静止する
。この時、トナーカートリッジの開口4aは下方に向き
、隔壁5に形成された多数の円錐形孔5aよりトナーが
落下する。円錐形孔は現像スリーブ軸方向に等間隔にあ
けられているので、トナーは現像スリーブ軸方向に一様
に補給される。一定時間後、制御回路がロータリ−ソレ
ノイド9を消磁すると、その軸9aは内蔵の復帰スプリ
ングにより復帰するため、揺動板8は初期状態に戻ろう
とし9回転可能に支持された隔壁を回転させ、トナー補
給を行なう開口を再び上方に戻す。The developing sleeve 10 is attracted to the surface of the sleeve rotating counterclockwise by the magnetic force of the magnet 11 having a plurality of magnetic poles and is carried. Here, the lower end of the partition plate 11 is bent toward the developing sleeve 1L; 0 side, and a predetermined gap g2 is formed between the partition plate 11 and the developing sleeve 10, so that the toner on the sleeve 10 is restricted. has been done. The toner on the developing sleeve 10 comes into contact with the surface of the photosensitive drum 1 at the position where the sleeve is closest to the photosensitive drum 1, and develops the electrostatic latent image on the photosensitive member. When the toner in the hopper 16 decreases due to repeated development, the toner buried in the recess 3d of the back plate 3C is also attracted to the sleeve side by the magnetic force.
A photocoupler 14 arranged to sandwich this recessed portion d detects that the amount of residual toner has fallen below a set value,
The toner shortage signal is input to a control circuit (not shown). In response to this signal, the control circuit excites the rotary solenoid 9 and applies a rotational force to its shaft 9a, so that the fan-shaped swing plate 8 connected to the shaft 9a rotates by a specified angle in the direction of arrow C and comes to rest. At the same time, the partition wall 5 and the toner cartridge 4 rotate by half a rotation due to the gear 5cK meshing with the gear of the rocking plate 8 and come to rest. At this time, the opening 4a of the toner cartridge faces downward, and the toner falls through a large number of conical holes 5a formed in the partition wall 5. Since the conical holes are equally spaced in the axial direction of the developing sleeve, toner is uniformly replenished in the axial direction of the developing sleeve. After a certain period of time, when the control circuit demagnetizes the rotary solenoid 9, its shaft 9a is returned to its original state by the built-in return spring, and the rocking plate 8 attempts to return to its initial state, causing the partition wall supported to rotate nine times. , return the opening for toner replenishment to the upper position again.
トナー補給が数回行なわれトナーカートリッジ内のトナ
ーがわずかになってくると、補給間隔時間が短くなるの
で、これを規定時間と比較して規定時間を下回った時、
制御回路からの信号によって外部にトナー不足の表示を
出したり、装置の動作を停止する等の処蓋ヲ行なう。When toner is refilled several times and the amount of toner in the toner cartridge becomes small, the replenishment interval time becomes shorter, so compare this with the specified time and when the time falls below the specified time,
A signal from the control circuit is used to display an external display indicating that toner is insufficient or to stop the operation of the device.
粒状物質が小径孔を通って落下する速度は、上室の粒状
物質の多少に拘らず一定であることは砂時計の原理によ
っても明らかである。従って、トナー粒を定量補給する
手段として本実施例は極めて有効である。It is also clear from the hourglass principle that the rate at which particulate matter falls through the small diameter hole is constant regardless of the amount of particulate matter in the upper chamber. Therefore, this embodiment is extremely effective as a means for quantitatively replenishing toner particles.
前記第1実施例では、トナーカートリッジ受容部材と隔
壁を一体物とし、隔壁をトナーカートリッジと共に回転
ζせるものであったが、第5図に示す様に、トナーカー
トリッジ4を回転可能に保持し、該トナーカートリッジ
下面に密着させてシーl状の隔壁5を設け、隔壁シート
の一端を巻取軸30に固定し、この軸径端のギア61と
揺動板8のギア8aを噛み合わせて、隔壁開口を移動さ
せるように構成しても良い。この例に於いては。In the first embodiment, the toner cartridge receiving member and the partition wall are integrated, and the partition wall is rotated together with the toner cartridge. However, as shown in FIG. 5, the toner cartridge 4 is rotatably held, A seal L-shaped partition 5 is provided in close contact with the lower surface of the toner cartridge, one end of the partition sheet is fixed to the take-up shaft 30, and the gear 61 at the radial end of this shaft is engaged with the gear 8a of the swing plate 8. The partition wall opening may be configured to be moved. In this example.
トナー不足信号によりロータリーソレノイド9が励起さ
れると同時にトナーカートリッジの回転を規制する爪(
不図示)がはずれ、隔壁シート5の移動により該隔壁シ
ートとの摩擦力によりカートリッジ開口も回動し、現像
剤貯蔵部の直上で2つの開口4aと58が一致してトナ
ーTの落下補給が行われる。所定時間経過後、ロータリ
ーソレノイド9が消磁されると、隔壁シートの他端のバ
ネ32により該隔壁シートが復元して隔壁開口も原位置
に戻る。同時にトナーカートリッジも復帰回転して開口
5aが上方へ戻され9回転規制爪がかかる。When the rotary solenoid 9 is excited by the toner shortage signal, a claw (
(not shown) is removed, and as the partition sheet 5 moves, the cartridge opening also rotates due to the frictional force with the partition sheet, and the two openings 4a and 58 align directly above the developer storage section, allowing the toner T to fall and be replenished. It will be done. After a predetermined period of time has elapsed, when the rotary solenoid 9 is demagnetized, the partition sheet is restored by the spring 32 at the other end of the partition sheet, and the partition opening also returns to its original position. At the same time, the toner cartridge also rotates back, opening 5a returns upward, and nine rotation regulating claws are engaged.
また9本実施例ではトナー不足を現像器に設けられたセ
ンサー14により検知しているが、これに限定されるこ
とはなく、現像器以外の場所にセンサーを設けて検知し
てもよい。Further, in this embodiment, the toner shortage is detected by the sensor 14 provided in the developing device, but the present invention is not limited to this, and a sensor may be provided in a location other than the developing device to detect the toner shortage.
第6図に示す他の実施例は、トナーカートリッジ21の
ケースに小径孔またはスリット状開口21at?設け、
前記実施例中の隔壁機能をトナーカートリッジのケース
にもたせたものである。即ち。Another embodiment shown in FIG. 6 has a small diameter hole or slit opening 21at in the case of the toner cartridge 21. established,
The partition wall function in the above embodiment is provided in the case of the toner cartridge. That is.
トナーカートリッジ21はそのケース外面の凹部21b
と現像器のトナーカートリッジ受容部22の入口に設け
られた凸部22aを合わせ、矢印A方向に移動させて受
容部22に装着する。この時開口21aは路上方を向い
ている。トナーカートリッジ21を所定位置まで挿入す
ると、トナーカートリッジ後端面の凸部21cが後述す
る回転環23の凹部23aに係合し、トナーカートリッ
ジの紡端部はトナーカー) IJツジ受容部22に固定
された軸受24aにより支持される。この支持状態にお
いて、トナーカー) IJJツジ部の小径部21dにト
ナーカートリッジ受容部の凸部22aが係合してトナー
カートリッジ21は回転可能と力る。The toner cartridge 21 has a recess 21b on the outer surface of its case.
and the convex part 22a provided at the entrance of the toner cartridge receiving part 22 of the developing device, and move it in the direction of arrow A to install it in the receiving part 22. At this time, the opening 21a faces toward the road. When the toner cartridge 21 is inserted to a predetermined position, a convex portion 21c on the rear end surface of the toner cartridge engages with a concave portion 23a of a rotating ring 23, which will be described later, and the spinning end of the toner cartridge is fixed to the IJ socket 22 (toner car). It is supported by a bearing 24a. In this supported state, the convex portion 22a of the toner cartridge receiving portion engages with the small diameter portion 21d of the toner car IJJ joint portion, thereby forcing the toner cartridge 21 to be rotatable.
回転環23はトナーカートリッジ受容部22の後方に固
定された軸受24bに回転可能に保持され。The rotating ring 23 is rotatably held by a bearing 24b fixed to the rear of the toner cartridge receiving portion 22.
その後端外周面にギア23bが形成されており!扇形の
揺動板8の円弧部に形成されたギア8aと ・噛
み合っている。そして揺動板8の扇の要に相当する部分
が現像器後側板3bに固定されたロータリーソレノイド
9の軸9aに固定されている。トナーカー) IJツジ
受受容部下上壁面がなく、仕切板12とノ・ウジング背
面板3Cとによシ構成されたホッパー16の空間とトナ
ーカートリッジ受容部の空間とはつながっている。なお
、上記トナーカートリッジ前部の小径部21dは第7図
に示すように略半円周に形成してもよい。A gear 23b is formed on the outer peripheral surface of the rear end! - It meshes with a gear 8a formed on the arc portion of the fan-shaped swing plate 8. A portion of the swing plate 8 corresponding to the fan is fixed to a shaft 9a of a rotary solenoid 9 fixed to the rear side plate 3b of the developing unit. (toner car) There is no lower upper wall surface of the IJ socket, and the space of the hopper 16 formed by the partition plate 12 and the housing back plate 3C is connected to the space of the toner cartridge receiving part. Incidentally, the small diameter portion 21d at the front portion of the toner cartridge may be formed to have a substantially semicircular shape as shown in FIG.
上記構成に於いて、トナー不足信号によりロータリーソ
レノイド9が励起されると、その軸9aに固定された揺
動板8が矢印C方向に回転し静止する。同時に揺動板の
ギア8aと噛み合うギア26bによって軸受24bで支
持された回転環23及び回転環23と軸受24aで支持
されたトナーカートリッジ21が半回転し、静止する。In the above configuration, when the rotary solenoid 9 is excited by the toner shortage signal, the swing plate 8 fixed to the shaft 9a rotates in the direction of arrow C and comes to rest. At the same time, the rotating ring 23 supported by the bearing 24b and the toner cartridge 21 supported by the rotating ring 23 and the bearing 24a rotate half a rotation by the gear 26b that meshes with the gear 8a of the rocking plate, and then come to rest.
この時。At this time.
トナーカートリッジの開口21aH下方に向き。The opening 21aH of the toner cartridge faces downward.
トナーが定量落下する。A certain amount of toner falls.
以上説明したように、トナー貯蔵室ケ上下に2分する隔
壁を設け、その隔壁に形成した小径穴あるいはスリット
形状開口から、トナー不足信号を受けてトナーを一定時
間落下させるから、トナーの定量補給が容易に実現でき
ると共にホッパー内のトナー量をトナーブロッキングが
生じ々い規定量以下に制御できる。こうすることにより
従来。As explained above, a partition wall is provided that divides the toner storage chamber into two upper and lower parts, and a toner shortage signal is received from the small diameter hole or slit-shaped opening formed in the partition wall to allow the toner to fall for a certain period of time. can be easily realized, and the amount of toner in the hopper can be controlled to be less than a specified amount without causing toner blocking. Conventional by doing this.
トナーブロッキングが発生し易かった現像スリーブと仕
切板の間隙に於いてもそれが軽減された。This also reduces toner blocking in the gap between the developing sleeve and the partition plate, where toner blocking was likely to occur.
このため、省エネ性に優れた圧力定着方式に用いるトナ
ーに対しても安定に使用できる。Therefore, it can be used stably even for toner used in a pressure fixing method with excellent energy saving properties.
更にトナーカートリッジがトナー貯蔵室になるので、従
来のホッパ一部を小さくできるため現像器を小形に構成
できる。更に、トナーの補給は重力によって力されるの
で、トナーは磁性体、非磁性体どちらであっても構わな
い。Furthermore, since the toner cartridge serves as a toner storage chamber, a part of the conventional hopper can be made smaller, so that the developing device can be made smaller. Further, since the toner is replenished by gravity, the toner may be either magnetic or non-magnetic.
トナーカートリッジを回転させて円錐形孔の開口方向を
上下に移動させる方式は、トナーカートリッジ内のトナ
ーを平担にする効果があり均一に補給することができる
。また1回転駆動力を現像器に設けたロータリーソレノ
イドから得ることにより、トナー補給中の電源落ちに対
して有効である。もし、現像器外の回転運動をクラッチ
ケ介して受けるならばトナー補給中、開口が下方に向い
た状態で電源落ちにがって開口が戻らない場合の対策が
困難である。The method of rotating the toner cartridge and moving the opening direction of the conical hole up and down has the effect of flattening the toner in the toner cartridge and can replenish the toner uniformly. Further, by obtaining the driving force for one rotation from a rotary solenoid provided in the developing device, it is effective against a power failure during toner replenishment. If rotational movement outside the developing device is received through a clutch, it is difficult to take measures against the case where the opening faces downward during toner replenishment and the opening does not return when the power is turned off.
更に、トナーカートリッジのケースに隔壁としての機能
を持たせることにより、小径穴、スリット形状開口での
トナーの目すまりによるトラブルが減少する。その理由
は、小径穴、スリット形状開口が現像器内に設けられる
のに比べ、新しいトナーカートリッジと交換される毎に
、その開口も新しいものに換えられるからである。また
目すまりが起こった場合でも回復が極めて容易である。Furthermore, by providing the toner cartridge case with the function of a partition wall, troubles caused by toner clogging in small-diameter holes and slit-shaped openings are reduced. The reason for this is that compared to the case where a small-diameter hole or slit-shaped opening is provided in the developing device, the opening is also replaced with a new one every time a new toner cartridge is replaced. Furthermore, even if blindness occurs, recovery is extremely easy.
第1図は本発明現像器の第1実施例を示す横断正面図、
第2図はトナ一定量補給部を示す斜視図。
第3図はトナー補給穴部の一部の拡大断面図、第4図は
トナー残量検出部の拡大断面図、第5図。
第6図はトナ一定量補給部の他の実施例を示す斜視図、
第7図は第5図に示す実施例に於けるトナーカー) I
Jツジ手前部の他の形状を示す斜視図である。
2は現像器、 4・21はトナーカートリッジ。
5は現像器隔壁、 5aは円錐形穴、 6は軸受。
8は揺動板、 9はロータリーソレノイド。
14は7オトカプラ。FIG. 1 is a cross-sectional front view showing a first embodiment of the developing device of the present invention;
FIG. 2 is a perspective view showing a fixed amount toner replenishing section. FIG. 3 is an enlarged sectional view of a portion of the toner supply hole, FIG. 4 is an enlarged sectional view of a remaining toner amount detection section, and FIG. FIG. 6 is a perspective view showing another embodiment of the fixed amount toner supply section;
Figure 7 shows the toner car in the embodiment shown in Figure 5)
FIG. 7 is a perspective view showing another shape of the front part of the J-shaped hinge. 2 is a developer, 4 and 21 are toner cartridges. 5 is a developer partition, 5a is a conical hole, and 6 is a bearing. 8 is a rocking plate, and 9 is a rotary solenoid. 14 is 7 Otokapura.
Claims (1)
壁で仕切られた補充現像剤の貯蔵室と、該隔壁の駆動手
段とを有し、該隔壁には該貯蔵室内の補充現像剤を該現
像室に落下させる為の開口が設けられ、核開口は該駆動
手段による該隔壁の移動に伴い該現像室の開口に対面し
た第1位置と、対面しない第2位置とをとるように構成
したことを特徴とする現像装置。 (2)隔壁が筒状に構成され、その移動が筒の中ノー軸
を略中心とする回転運動である特許請求の範囲第1項に
記載の現像装置。 (ろ)隔壁が着脱可能である特許請求の範囲第1項また
は第2項に記載の現像装置。 (4)開口が現像室に対面した位置にあるとき、補充現
像剤の時間当り落下量が略均−となるように該開口の寸
法を定めた一特許請求の範囲第1乃至6項のいずれか1
項に記載の現像装置。 (5)開口が複数であシ、現像巾方向に略平行に配列さ
れている特許請求の範囲第1乃至4項のいずれか1項に
記載の現像装置。 (6)開口が現像巾方向に略平行な長穴である特許請求
の範囲第1乃至4項のいずれか1項に記載の現像装置。 (7)貯蔵室内に、開口を有する補充現像剤カートリッ
ジを着脱可能に装着でき、少くとも隔壁の開口が第1位
置にあるとき、該補充現像剤カー) IJツジの開口も
また前記第1位置にあるように構成した特許請求の範囲
第1.2.4乃至6項のいずれか1項に記載の現像装置
。[Scope of Claims] (1) A developing chamber, a replenishment developer storage chamber adjacent to the upper side of the developing chamber and partitioned by a movable partition, and a means for driving the partition; is provided with an opening for dropping replenishment developer in the storage chamber into the developing chamber, and the core opening is located at a first position facing the opening of the developing chamber as the partition wall is moved by the driving means, and at a first position facing the opening of the developing chamber. A developing device characterized in that it is configured to take a second position in which the developing device does not operate. (2) The developing device according to claim 1, wherein the partition wall is configured in a cylindrical shape, and the movement thereof is a rotational movement approximately centered on the inner axis of the cylinder. (b) The developing device according to claim 1 or 2, wherein the partition wall is removable. (4) Any one of claims 1 to 6, wherein the dimensions of the opening are determined so that when the opening faces the developing chamber, the amount of replenishing developer falling per hour is approximately equal. or1
Developing device described in Section 1. (5) The developing device according to any one of claims 1 to 4, wherein a plurality of openings are arranged substantially parallel to the developing width direction. (6) The developing device according to any one of claims 1 to 4, wherein the opening is a long hole substantially parallel to the developing width direction. (7) A replenishment developer cartridge having an opening can be removably installed in the storage chamber, and when at least the opening of the partition wall is in the first position, the replenishment developer cartridge) The opening of the IJ joint is also in the first position. A developing device according to any one of claims 1.2.4 to 6, configured as described in claim 1.2.4.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57125516A JPS5915954A (en) | 1982-07-19 | 1982-07-19 | Developing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57125516A JPS5915954A (en) | 1982-07-19 | 1982-07-19 | Developing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5915954A true JPS5915954A (en) | 1984-01-27 |
Family
ID=14912076
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57125516A Pending JPS5915954A (en) | 1982-07-19 | 1982-07-19 | Developing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5915954A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0362363U (en) * | 1989-10-20 | 1991-06-18 | ||
JPH0362366U (en) * | 1989-10-20 | 1991-06-18 | ||
US5669044A (en) * | 1995-06-07 | 1997-09-16 | Nashua Corporation | Article and method for dispensing toner and the like |
-
1982
- 1982-07-19 JP JP57125516A patent/JPS5915954A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0362363U (en) * | 1989-10-20 | 1991-06-18 | ||
JPH0362366U (en) * | 1989-10-20 | 1991-06-18 | ||
US5669044A (en) * | 1995-06-07 | 1997-09-16 | Nashua Corporation | Article and method for dispensing toner and the like |
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