JPH0546026A - Device for detecting remaining quantity of toner - Google Patents
Device for detecting remaining quantity of tonerInfo
- Publication number
- JPH0546026A JPH0546026A JP20437491A JP20437491A JPH0546026A JP H0546026 A JPH0546026 A JP H0546026A JP 20437491 A JP20437491 A JP 20437491A JP 20437491 A JP20437491 A JP 20437491A JP H0546026 A JPH0546026 A JP H0546026A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- blade
- detecting
- agitator
- transmitting means
- 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
Landscapes
- Dry Development In Electrophotography (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電子写真プロセスを用
いたレーザープリンタ、複写機、ファクシミリ等の画像
形成装置のトナー収容装置（以下、「トナーカートリッ
ジ」という）でのトナー粘性を利用したトナー残量検出
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toner utilizing toner viscosity in a toner storage device (hereinafter referred to as "toner cartridge") of an image forming apparatus such as a laser printer, a copying machine and a facsimile which uses an electrophotographic process. The present invention relates to a remaining amount detection device.
【０００２】[0002]
【従来の技術】図７は、公知の画像形成装置の概略構成
図である。2. Description of the Related Art FIG. 7 is a schematic configuration diagram of a known image forming apparatus.
【０００３】給紙装置１から底板上昇レバーでピックア
ップローラに圧接されレジストローラ対方向に給送され
た記録紙２は、レジストローラ対３によってタイミング
がとられてドラム状の感光体４から成る潜像担持体へ搬
送される。感光体４は図でみて反時計方向に回転駆動さ
れ、その際帯電チャージャ５によって表面を帯電され、
レーザー光学系６からのレーザー光を照射されて感光体
上に静電潜像が形成される。この潜像はトナーカートリ
ッジ７を含む現像装置８を通るときトナーによって可視
像化され、この可視像は感光体４へ搬送された記録紙２
に転写チャージャ９により転写され、転写された記録紙
上の可視像は定着装置１０によって定着される。一方、
可視像転写後の感光体４はクリーニングブレード１２を
有するクリーニング装置によって残留トナーを除去され
る。感光体４から除去されたトナーは、トナー回収タン
ク１３に回収され収容される。定着装置１０から排出さ
れた記録紙２は、片面記録の場合にはそのまま排紙部１
１に収納され、両面記録の場合には回動可能な両面入口
ガイド１４により両面搬送ローラ対１５へ導かれる。両
面搬送ローラ対１５により記録紙２は、当該記録紙２を
給紙装置方向に送るように回転している反転ローラ対１
６に搬送され、反転センサー１７を通過する。記録紙２
が反転センサー１７を通過して所定時間後、反転ローラ
対１６は回転方向を変え、さらに回動可能な反転ガイド
１８を切り換えることにより記録紙２をレジストローラ
対方向に搬送させる。再びレジストローラ対３に給送さ
れた記録紙２は、レジストローラ対３によってタイミン
グがとられて感光体４へ搬送され、上記と同様の手順を
経てトナー像が記録紙２に転写定着される。この時、給
紙装置１から給送された場合と反対面が感光体４と接す
るので、記録紙２に両面記録がなされる。両面記録がな
された記録紙２は定着装置１０を通過後、両面入口ガイ
ド１４により排紙部１１に排出され収納される。The recording paper 2 which is pressed against the pickup roller by the bottom plate lifting lever from the paper feeding device 1 and is fed in the direction of the registration roller pair is formed by a latent roller 4 composed of a drum-shaped photoconductor 4 at a timing by the registration roller pair 3. It is conveyed to the image carrier. The photoconductor 4 is driven to rotate counterclockwise as viewed in the figure, and at that time, the surface is charged by the charging charger 5.
A laser beam from the laser optical system 6 is irradiated to form an electrostatic latent image on the photoconductor. This latent image is visualized by the toner as it passes through the developing device 8 including the toner cartridge 7, and the visible image is transferred to the recording paper 2 conveyed to the photoconductor 4.
The visible image on the recording paper, which is transferred by the transfer charger 9 onto the recording sheet, is fixed by the fixing device 10. on the other hand,
The residual toner is removed from the photoconductor 4 after the visible image transfer by a cleaning device having a cleaning blade 12. The toner removed from the photoconductor 4 is recovered and stored in the toner recovery tank 13. The recording paper 2 discharged from the fixing device 10 is used as it is in the case of single-sided recording.
In the case of double-sided recording, it is guided to a pair of double-sided conveying rollers 15 by a rotatable double-sided entrance guide 14. The recording paper 2 is rotated by the pair of double-sided conveyance rollers 15 so that the recording paper 2 is rotated toward the paper feeding device.
6 is conveyed to the reversal sensor 17. Chart paper 2
After passing the reversing sensor 17 for a predetermined time, the reversing roller pair 16 changes the rotation direction, and further, the rotatable reversing guide 18 is switched to convey the recording paper 2 in the registration roller pair direction. The recording paper 2 again fed to the registration roller pair 3 is conveyed to the photoconductor 4 at a timing by the registration roller pair 3, and the toner image is transferred and fixed onto the recording paper 2 through the same procedure as above. . At this time, the opposite side of the sheet fed from the sheet feeding device 1 is in contact with the photoconductor 4, so that double-sided recording is performed on the recording sheet 2. After passing through the fixing device 10, the recording paper 2 on which double-sided recording has been performed is discharged to the paper discharge unit 11 by the double-sided entrance guide 14 and is stored therein.
【０００４】そして、上記装置のトナーカートリッジに
慣用されているセンサとしては、例えば、実開昭６１−
１８２５５５号公報に記載された、撹拌時に撹拌部材に
かかる回転負荷を用いたトルク検知センサが公知であ
る。As a sensor commonly used in the toner cartridge of the above-mentioned apparatus, for example, the actual open sensor 61-
A torque detection sensor described in Japanese Patent No. 182555, which uses a rotational load applied to a stirring member at the time of stirring, is known.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、当該ト
ルク検知センサでは、回転負荷の減少を、撹拌軸を介し
てトナーカートリッジ外に設けられた二枚の切欠き付き
円形カムの機械的機構に用いて伝えるようになっている
ために、装置全体を大きくせざるをえないか、あるいは
トナーカートリッジを小さくする必要があり、スペース
効率が良くないという不具合があった。However, in the torque detection sensor, the reduction of the rotational load is applied to the mechanical mechanism of the two notched circular cams provided outside the toner cartridge via the stirring shaft. Since the information is transmitted, the size of the entire apparatus must be increased, or the size of the toner cartridge must be reduced, which causes a problem that space efficiency is not good.
【０００６】本発明は、上記した従来装置での問題に鑑
み、スペース効率を改善すべく、トナーカートリッジ内
に上記トルク検知手段と同じ効果を奏するものを設け
て、安価でスペース効率の良いトナー残量検出装置を提
供することを課題としている。In view of the above problems in the conventional apparatus, the present invention provides a toner cartridge having the same effect as the above torque detecting means in order to improve the space efficiency, and the toner remaining amount is low and the space efficiency is high. An object is to provide a quantity detection device.
【０００７】[0007]
【課題を解決するための手段】本発明は、内部に回動可
能な撹拌部材を有するトナーカートリッジのトナー残量
検出装置において、当該撹拌部材を、トナーの補給撹拌
を主目的とした第１部材と、当該第１部材方向に付勢さ
れこれに追従して回動する第２部材とから構成するとと
もに、第１部材と第２部材のそれぞれの羽根部に、羽根
位置検出用信号伝達手段を設けて、これらの出力信号に
応じてトナー残量を検出することにより、上記の課題を
解決した。SUMMARY OF THE INVENTION According to the present invention, in a toner remaining amount detecting device for a toner cartridge having a rotatable stirring member inside, the stirring member is a first member whose main purpose is toner replenishment stirring. And a second member that is biased in the direction of the first member and rotates following the first member, and a blade position detection signal transmission means is provided to each of the first member and the second member. The above-mentioned problem is solved by providing and detecting the remaining amount of toner according to these output signals.
【０００８】羽根位置検出用信号伝達手段がマグネット
であり、これらマグネットが、両羽根部の接近の際に相
互に反発力が作用する位置に取り付けられていれば、好
適である。It is preferable that the blade position detecting signal transmitting means is a magnet, and these magnets are mounted at positions where repulsive forces act on each other when the two blade parts approach each other.
【０００９】[0009]
【実施例】本発明の詳細を、図に示す実施例に基づいて
説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described based on the embodiments shown in the drawings.
【００１０】図１に部分的に示されたトナーカートリッ
ジ７に収容されているトナーは、撹拌部材の第１部材で
あるアジテータ（以下、「主アジテータ」という）２０
の矢印方向の回転に伴って、トナー補給口２１から現像
装置８内へ送り込まれる。The toner contained in the toner cartridge 7 partially shown in FIG. 1 is agitator (hereinafter referred to as “main agitator”) 20 which is the first member of the stirring member.
The toner is fed into the developing device 8 from the toner replenishing port 21 with the rotation in the direction of the arrow.
【００１１】当該主アジテータ２０の羽根部の一部に
は、切り取られた個所があり、当該個所をその羽根部で
塞ぐように、第２部材である補助アジテータ２２が主ア
ジテータの回転軸に回動可能に付設されている。主アジ
テータ２０と補助アジテータ２２のそれぞれの羽根部に
は、図２に示されるように、羽根位置検出用信号伝達手
段となるマグネット２３、２４が、両羽根部の接近の際
に相互に反発力が作用する位置に取り付けられている。
さらに補助アジテータ２２には、羽根部にトナーからの
負荷がかからないときには、当該羽根部が主アジテータ
２０の羽根部にマグネットの反発力による隙間分のみを
残して接近し、トナーの負荷がかかるときには、撹拌回
転に関して、主アジテータ２０の羽根部に遅れるように
なる程度の付勢力を有したバネ２５が取り付けられてい
る。A part of the blade portion of the main agitator 20 has a cut-out portion, and the auxiliary agitator 22 as the second member is rotated around the rotary shaft of the main agitator so as to close the portion with the blade portion. It is attached to be movable. As shown in FIG. 2, magnets 23 and 24, which serve as a blade position detecting signal transmitting means, are mutually repulsive to the blade portions of the main agitator 20 and the auxiliary agitator 22 when the blade portions approach each other. It is attached at the position where
Further, when the blade portion is not loaded by the toner to the auxiliary agitator 22, the blade portion approaches the blade portion of the main agitator 20 leaving only the gap due to the repulsive force of the magnet, and when the toner load is applied, A spring 25 having a biasing force such that the blade 25 of the main agitator 20 is delayed with respect to the stirring rotation is attached.
【００１２】図３に示されるように、トナーカートリッ
ジ７内に相当程度のトナーがある場合、補助アジテータ
２２は、バネ２５の付勢力にも拘らず、トナーの存在に
よって、主アジテータ２０よりも遅れた位置で回転す
る。この時の状態を、カートリッジ外側下部に取り付け
られた磁気検出装置２６で検出すると、出力信号は、図
５のようになる。As shown in FIG. 3, when a considerable amount of toner is present in the toner cartridge 7, the auxiliary agitator 22 is delayed from the main agitator 20 due to the presence of toner, despite the biasing force of the spring 25. Rotate in the open position. When the state at this time is detected by the magnetic detection device 26 attached to the outer lower portion of the cartridge, the output signal becomes as shown in FIG.
【００１３】トナーカートリッジ７内のトナー残量がか
なり減った場合、トナーの補助アジテータ２２羽根部へ
の作用は、当該羽根部先端がカートリッジ下部にきたと
きのみ生ずることとなり、図４に示されるように、羽根
部先端がトナーに接しなくなると、補助アジテータ２２
の羽根部が主アジテータ２０の羽根部にマグネットの反
発力による隙間分のみを残して接近して、その位置で補
助アジテータ２２は回転する。この時の状態を、磁気検
出装置２６で検出すると、出力信号は、図６のようにな
る。When the remaining amount of toner in the toner cartridge 7 is considerably reduced, the action of the toner on the blade portion of the auxiliary agitator 22 occurs only when the tip of the blade portion comes to the lower portion of the cartridge, as shown in FIG. When the tip of the blade does not come into contact with the toner, the auxiliary agitator 22
Blade portion of the main agitator 20 approaches the blade portion of the main agitator 20 leaving only a gap due to the repulsive force of the magnet, and the auxiliary agitator 22 rotates at that position. When the state at this time is detected by the magnetic detection device 26, the output signal is as shown in FIG.
【００１４】その結果、主アジテータ２０と補助アジテ
ータ２２のそれぞれのマグネット２３、２４による磁気
検出装置２６での磁気信号のズレＴ1、Ｔ2を制御回路
（図示せず）によりチェックすることにより、トナーの
残量状態を知ることが可能になる。As a result, by checking the deviations T 1 and T 2 of the magnetic signals in the magnetic detector 26 by the magnets 23 and 24 of the main agitator 20 and the auxiliary agitator 22, respectively, by a control circuit (not shown), It becomes possible to know the remaining amount of toner.
【００１５】[0015]
【発明の効果】請求項１のトナー残量検出装置において
は、トナー収容装置の内部に設けられている撹拌部材
が、トナーの補給撹拌を主目的とした第１部材と、当該
第１部材方向に付勢されこれに追従して回動する第２部
材とから構成されるとともに、第１部材と第２部材のそ
れぞれの羽根部に、羽根位置検出用信号伝達手段が設け
られていて、これらの出力信号に応じてトナー残量を検
出するようになっているので、従来のトルク検知手段と
同じ効果を奏しつつ、スペース効率を改善することがで
きる。即ち、画像形成装置全体を小型化できるか、ある
いは当該装置の大きさ自体を変えないのであれば、トナ
ー容量の増量が可能になる。In the toner remaining amount detecting device according to the first aspect of the present invention, the agitating member provided inside the toner accommodating device is the first member mainly for the purpose of stirring and replenishing the toner, and the first member direction. And a blade member for detecting the position of the blade, which is provided on each blade portion of the first member and the second member. Since the remaining amount of toner is detected according to the output signal of, the space efficiency can be improved while achieving the same effect as the conventional torque detecting means. That is, if the entire image forming apparatus can be downsized or the size of the apparatus itself is not changed, the toner capacity can be increased.
【００１６】また、請求項２のトナー残量検出装置にお
いては、信号伝達手段をマグネットとしているので、当
該装置を安価に提供することが可能になる。Further, in the toner remaining amount detecting device of the second aspect, since the signal transmitting means is the magnet, it is possible to provide the device at a low cost.
【００１７】食品分野等、粉体、粘性体を扱う分野で、
当該粉体等の容器内残量状態を、この装置を用いること
により、容易に知ることができる。In the field of handling powders and viscous materials, such as the food field,
By using this device, the state of the remaining amount of the powder or the like in the container can be easily known.
【図１】本発明にかかるトナー残量検出装置を備えたト
ナーカートリッジと現像装置の部分概略構成図である。FIG. 1 is a partial schematic configuration diagram of a toner cartridge including a toner remaining amount detecting device according to the present invention and a developing device.
【図２】図１のトナー残量検出装置の断面概略図であ
る。FIG. 2 is a schematic cross-sectional view of the toner remaining amount detection device of FIG.
【図３】トナーカートリッジ内に相当程度のトナーがあ
る場合の、トナー残量検出装置の作動状態を示す概略図
である。FIG. 3 is a schematic diagram showing an operating state of the toner remaining amount detecting device when a considerable amount of toner is present in the toner cartridge.
【図４】トナーカートリッジ内のトナー残量がかなり減
った場合の、トナー残量検出装置の作動状態を示す概略
図である。FIG. 4 is a schematic diagram showing an operating state of the toner remaining amount detecting device when the toner remaining amount in the toner cartridge is considerably reduced.
【図５】図３の状態での、信号伝達手段から検出される
出力信号と時間との関係図である。5 is a relationship diagram between an output signal detected from the signal transmission means and time in the state of FIG.
【図６】図４の状態での、信号伝達手段から検出される
出力信号と時間との関係図である。FIG. 6 is a relationship diagram between an output signal detected from the signal transmission means and time in the state of FIG.
【図７】公知の画像形成装置の概略構成図である。FIG. 7 is a schematic configuration diagram of a known image forming apparatus.
７ トナーカートリッジ ２０ 主アジテータ ２１ トナー補給口 ２２ 補助アジテータ ２３、２４ マグネット ２５ バネ 7 Toner Cartridge 20 Main Agitator 21 Toner Supply Port 22 Auxiliary Agitator 23, 24 Magnet 25 Spring
Claims (2)
ー収容装置のトナー残量検出装置において、前記撹拌部
材が、トナーの補給撹拌を主目的とした第１部材と、当
該第１部材方向に付勢されこれに追従して回動する第２
部材とから構成されるとともに、第１部材と第２部材の
それぞれの羽根部に、羽根位置検出用信号伝達手段が設
けられていて、これらの出力信号に応じてトナー残量を
検出することを特徴とするトナー残量検出装置。1. A toner remaining amount detecting device for a toner accommodating device having a rotatable stirring member inside, wherein the stirring member is a first member mainly for the purpose of stirring and replenishing the toner, and a direction of the first member. The second which is biased by and rotates following this
And a blade position detecting signal transmitting means is provided on each of the blade portions of the first member and the second member, and the remaining toner amount is detected in accordance with these output signals. Characteristic toner remaining amount detecting device.
これらマグネットが、両羽根部の接近の際に相互に反発
力が作用する位置に取り付けられていることを特徴とす
る請求項１に記載のトナー残量検出装置。2. The signal transmitting means is a magnet,
The toner remaining amount detecting device according to claim 1, wherein the magnets are mounted at positions where repulsive forces act on each other when the two blade parts approach each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20437491A JPH0546026A (en) | 1991-08-14 | 1991-08-14 | Device for detecting remaining quantity of toner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20437491A JPH0546026A (en) | 1991-08-14 | 1991-08-14 | Device for detecting remaining quantity of toner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0546026A true JPH0546026A (en) | 1993-02-26 |
Family
ID=16489465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20437491A Pending JPH0546026A (en) | 1991-08-14 | 1991-08-14 | Device for detecting remaining quantity of toner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0546026A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0692748A1 (en) * | 1994-07-15 | 1996-01-17 | Ricoh Company, Ltd | Toner cartridge for a developing device included in an image forming apparatus |
| US6187495B1 (en) | 1998-08-31 | 2001-02-13 | Canon Kabushiki Kaisha | Yellow toner, process for producing the tower and image forming method using the toner |
| US6532144B2 (en) | 2000-09-11 | 2003-03-11 | Nec Tokin Corporation | Electrical double layer capacitor |
| JP2012181422A (en) * | 2011-03-02 | 2012-09-20 | Canon Inc | Image forming apparatus |
| JP2012181424A (en) * | 2011-03-02 | 2012-09-20 | Canon Inc | Image forming apparatus |
| JP2012237898A (en) * | 2011-05-12 | 2012-12-06 | Canon Inc | Image forming apparatus |
| US9152079B2 (en) | 2010-11-24 | 2015-10-06 | Canon Kabushiki Kaisha | Image forming apparatus having developer amount determination |
| JP2017138550A (en) * | 2016-02-05 | 2017-08-10 | 株式会社リコー | Powder supply device and image forming apparatus |
| US9983506B2 (en) | 2014-06-02 | 2018-05-29 | Lexmark International, Inc. | Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing |
| US10345736B1 (en) | 2018-07-20 | 2019-07-09 | Lexmark International, Inc. | Toner level detection measuring a radius of a rotatable magnet |
| US10429765B1 (en) | 2018-07-05 | 2019-10-01 | Lexmark International, Inc. | Toner container for an image forming device having magnets of varying angular offset for toner level sensing |
| US10451998B1 (en) | 2018-07-20 | 2019-10-22 | Lexmark International, Inc. | Toner level detection measuring an orientation of a rotatable magnet having a varying radius |
| US10451997B1 (en) | 2018-07-20 | 2019-10-22 | Lexmark International, Inc. | Toner level detection measuring an orientation of a rotatable magnet having a varying orientation relative to a pivot axis |
| US10474060B1 (en) | 2018-07-05 | 2019-11-12 | Lexmark International, Inc. | Toner level sensing using rotatable magnets having varying angular offset |
| EP3680721A1 (en) * | 2014-06-02 | 2020-07-15 | Lexmark International, Inc. | Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing |
-
1991
- 1991-08-14 JP JP20437491A patent/JPH0546026A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0692748A1 (en) * | 1994-07-15 | 1996-01-17 | Ricoh Company, Ltd | Toner cartridge for a developing device included in an image forming apparatus |
| US6187495B1 (en) | 1998-08-31 | 2001-02-13 | Canon Kabushiki Kaisha | Yellow toner, process for producing the tower and image forming method using the toner |
| US6532144B2 (en) | 2000-09-11 | 2003-03-11 | Nec Tokin Corporation | Electrical double layer capacitor |
| US9152079B2 (en) | 2010-11-24 | 2015-10-06 | Canon Kabushiki Kaisha | Image forming apparatus having developer amount determination |
| JP2012181422A (en) * | 2011-03-02 | 2012-09-20 | Canon Inc | Image forming apparatus |
| JP2012181424A (en) * | 2011-03-02 | 2012-09-20 | Canon Inc | Image forming apparatus |
| JP2012237898A (en) * | 2011-05-12 | 2012-12-06 | Canon Inc | Image forming apparatus |
| US9983506B2 (en) | 2014-06-02 | 2018-05-29 | Lexmark International, Inc. | Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing |
| EP3680721A1 (en) * | 2014-06-02 | 2020-07-15 | Lexmark International, Inc. | Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing |
| EP3944023A1 (en) * | 2014-06-02 | 2022-01-26 | Lexmark International, Inc. | Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing |
| JP2017138550A (en) * | 2016-02-05 | 2017-08-10 | 株式会社リコー | Powder supply device and image forming apparatus |
| US10429765B1 (en) | 2018-07-05 | 2019-10-01 | Lexmark International, Inc. | Toner container for an image forming device having magnets of varying angular offset for toner level sensing |
| US10474060B1 (en) | 2018-07-05 | 2019-11-12 | Lexmark International, Inc. | Toner level sensing using rotatable magnets having varying angular offset |
| US10345736B1 (en) | 2018-07-20 | 2019-07-09 | Lexmark International, Inc. | Toner level detection measuring a radius of a rotatable magnet |
| US10451998B1 (en) | 2018-07-20 | 2019-10-22 | Lexmark International, Inc. | Toner level detection measuring an orientation of a rotatable magnet having a varying radius |
| US10451997B1 (en) | 2018-07-20 | 2019-10-22 | Lexmark International, Inc. | Toner level detection measuring an orientation of a rotatable magnet having a varying orientation relative to a pivot axis |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104345623B (en) | Imaging device | |
| JPH0546026A (en) | Device for detecting remaining quantity of toner | |
| JPH11282223A (en) | Image forming device and optical detection system | |
| EP0784250B1 (en) | Process cartridge, development apparatus, and electrophoto-graphic image formation apparatus | |
| US6892033B2 (en) | Image forming apparatus having apparatus main assembly and a process cartridge including non-contact memory performing non-contact data communication with the apparatus main assembly | |
| EP0604191B1 (en) | Developing device and image forming apparatus | |
| JP2000267419A (en) | Image forming device | |
| EP0378005B1 (en) | Copy sheet de-registration device | |
| JP5488827B2 (en) | Image forming apparatus | |
| JP2002169438A (en) | Toner recycle system and electrophotographic image forming device equipped therewith | |
| US6122466A (en) | Image forming apparatus | |
| JP3700473B2 (en) | Toner cartridge replacement detection device and image forming apparatus using the same | |
| EP0754983B1 (en) | Developing device provided with a plurality of developer conveying members | |
| JP2001265112A (en) | Image forming device and unit for the image forming device | |
| JP4827960B2 (en) | Image forming apparatus and developing device | |
| JP2007139990A (en) | Image forming apparatus | |
| JPH10153939A (en) | Image forming device | |
| JP2001034050A (en) | Image forming method and device | |
| JP6008231B2 (en) | A motor, a motor driving device, a sheet conveying device, and an image forming apparatus; | |
| JPH08123188A (en) | Image forming device' | |
| JP2023180736A (en) | Image forming apparatus | |
| JP2002196584A (en) | Developing device and image forming apparatus | |
| JPH08160824A (en) | Cleaning device and process cartridge | |
| JPH11160990A (en) | Developing device and electrophotographic image forming device | |
| JP2010266575A (en) | Screw, developing device, image forming apparatus and process cartridge |