JPS58126555A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPS58126555A JPS58126555A JP906382A JP906382A JPS58126555A JP S58126555 A JPS58126555 A JP S58126555A JP 906382 A JP906382 A JP 906382A JP 906382 A JP906382 A JP 906382A JP S58126555 A JPS58126555 A JP S58126555A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- sensor
- chamber
- developer
- toners
- 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.)
- Granted
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
- G03G15/0848—Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability
- G03G15/0856—Detection or control means for the developer level
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
- Magnetic Brush Developing In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は現像装置、更に詳しくは現像剤補給室から現像
室へ現像剤を補給する形式の現像装置Kr1Aする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a developing device, and more particularly to a developing device Kr1A of a type that replenishes developer from a developer replenishing chamber to a developing chamber.
本発明は現像室と、該現像室に現像剤を補充する補充手
段と、該補充手段に連結され九現像剤貯蔵室を有する画
像形成装置において、現像室内の現像剤の量を検出する
検出手段S−1と、現像剤貯蔵室内の現像剤の量を検出
する検出手段5−2を有してお夛、検出手段S−1が、
現像室内の現像剤の量の少なくなっ九ことを検出し死時
補充手段を働かせると共に、その時点よシ働くタイマー
回路を有しておシ、該タイマー0
回路が所定時間達経た後に検出手段8−11が現像剤の
ない状態を示し、かつ検出手段S−2が現像剤のあるこ
とを示したとき、画像形成装置又は補充手段を不動にさ
せるかまたは異常表示をするようにした現像装置を提供
することを目的とする。The present invention provides an image forming apparatus having a developing chamber, a replenishing means for replenishing the developing chamber with developer, and a detecting means for detecting the amount of developer in the developing chamber in an image forming apparatus that is connected to the replenishing means and has nine developer storage chambers. S-1, and a detection means 5-2 for detecting the amount of developer in the developer storage chamber, and the detection means S-1 includes:
The detecting means 8 detects when the amount of developer in the developing chamber is low and activates the dead replenishment means, and also has a timer circuit which operates at that time. -11 indicates that there is no developer, and when the detection means S-2 indicates that there is developer, the image forming device or the replenishing means is made immobile or the developing device is configured to display an abnormality display. The purpose is to provide.
以下本発明の実施例について述べる。Examples of the present invention will be described below.
図面に示す実施例は一成分磁性現像剤を用いる現像装置
である。この現像装置は第1図に示すように補充ト、ナ
ー貯蔵室lと現像室2とから成り、こO両室1・20連
通路3にトナー4を適量ずつ現像室2に落下供給させる
ためのシャッタ5が設けられている。また、上記連通路
3の近傍において上記の貯蔵室1内に攪拌部材6が設け
られている。The embodiment shown in the drawings is a developing device using a one-component magnetic developer. As shown in FIG. 1, this developing device consists of a replenishment and toner storage chamber 1 and a developing chamber 2. The toner 4 is dropped into the developing chamber 2 in an appropriate amount through a communication passage 3 between the two chambers 1 and 20. A shutter 5 is provided. Further, a stirring member 6 is provided in the storage chamber 1 near the communication path 3.
現像室2Ku固定のマグネットローラ7を内包するトナ
ー供給用スリーブ8と、固定のマグネットロー29を内
包する現像スリーブ10とが間隙d、をおいて、同一方
向に同一速度で回転自在に並設されている。上記のスリ
ーブ8に対して社儒えばlsmの間隙d1をおいてブレ
ード11が配置されている。このブレード11はアルミ
ニウム等の非磁性材であって、上記両室l・2の仕切板
12に止めねじ13で取付けられている。スリーブ10
は現像室2の開口14で例えば300μの関tlasを
あけて画像形成体(感光ドラム)15と対向している。A toner supply sleeve 8 containing a fixed magnet roller 7 in the developing chamber 2Ku and a developing sleeve 10 containing a fixed magnet roller 29 are arranged side by side with a gap d between them so as to be rotatable in the same direction at the same speed. ing. The blade 11 is arranged with a gap d1 of lsm in relation to the sleeve 8. This blade 11 is made of a non-magnetic material such as aluminum, and is attached to the partition plate 12 of the two chambers 1 and 2 with a set screw 13. sleeve 10
is opposed to the image forming member (photosensitive drum) 15 at the opening 14 of the developing chamber 2 with a distance of, for example, 300μ.
” スリーブ8・10はステンレス等の非磁性材であっ
て、第2図のように感光ドラム15と一体のギヤ16に
スリーブ100軸10aと一体Oのギヤ17を噛合せ、
このギヤ17に中間ギヤ18を介してスリーブ80軸8
aと一体のギャホ
19を連動させた構成である。ギヤ16の矢年ホ
方向回転によシスリーブ8・10は先年方向に同転する
。The sleeves 8 and 10 are made of a non-magnetic material such as stainless steel, and as shown in FIG.
A sleeve 80 and shaft 8 are connected to this gear 17 via an intermediate gear 18.
This is a configuration in which the Gyaho 19, which is integrated with a, is linked. As the gear 16 rotates in the arrow direction, the sleeves 8 and 10 simultaneously rotate in the previous direction.
マグネットローラ7の磁力(鳩)によって回転スリーブ
8の表面に付着したトナーは、グレード11によシ約1
.2 m/mの均一厚さに規制される。このスリーブ8
上の付着トナー紘スリーブ10に対向する位置において
、マグネットローラ7の反発磁力(SS )とマグネッ
トローラ9゜吸引磁力(N、)と、直列接続された直流
電源DCと交流電源ACとKよってスリーブlOに印加
されたバイアス電圧の静電吸引力の作用を受け、スリー
ブ10上へ転移して約50μO薄層を形成する。スリー
7”10上のトナーは感光ドラム15と対向する位置に
おいて、感光ドラム15上に形成された潜像の静電吸引
力を受けて感光ドラム上に転移し、上記潜像を特開昭5
5−18656〜9号公報記載のジャンピング現像法に
によシ現曹するものである。The toner attached to the surface of the rotating sleeve 8 by the magnetic force (pigeon) of the magnet roller 7 has a grade of about 1
.. It is regulated to a uniform thickness of 2 m/m. This sleeve 8
At a position facing the upper adhesion toner sleeve 10, the repelling magnetic force (SS) of the magnet roller 7, the attractive magnetic force (N, ) of the magnet roller 9, and the serially connected DC power supply DC, AC power supply AC, and K cause the sleeve to close. Under the action of the electrostatic attraction of the bias voltage applied to lO, it transfers onto the sleeve 10 to form a thin layer of about 50 μO. At a position facing the photosensitive drum 15, the toner on the three 7" 10 is transferred onto the photosensitive drum by the electrostatic attraction force of the latent image formed on the photosensitive drum 15, and the latent image is
5-18656 to 9 is used for developing.
スリーブ10上に残ったトナーは!ダネットローラ90
反発磁力(S、)を受けてスリーブ上から離脱し、現像
室2の傾斜底面上を点線の矢示方向に移動する。Toner left on sleeve 10! Dunnett roller 90
It is separated from the sleeve by the repulsion magnetic force (S,) and moves on the inclined bottom surface of the developing chamber 2 in the direction indicated by the dotted line arrow.
現像室底部に設けられたトナー残量検出手段としてのセ
ンサーS−1が現像室内のトナー不足を検出すると、そ
の検出信号を受けて、第2図に示すソレノイド5L−2
がONL、レバー20を軸21を回転中心軸として反時
計方向に回転させる。この結果レバー20のUミゾ部2
0&に係合しているダボ22&を引っかけて、アーム2
2を回転軸23を中心に反時計方向(第1図において)
に回転させ、回転軸23に取付けられているシャッタ5
を開いてトナー4を補充トナー貯蔵室1から現像室2内
へ供給落下させる。一方上記のソレノイド5L−2がO
Nすると、レバー20の折9曲げ部20bがアーム24
を反時計方向に回動させてコントローラ25との保合を
離す。When the sensor S-1 serving as a toner remaining amount detecting means provided at the bottom of the developing chamber detects a shortage of toner in the developing chamber, in response to the detection signal, the solenoid 5L-2 shown in FIG.
is ONL, and the lever 20 is rotated counterclockwise about the shaft 21 as the center of rotation. As a result, the U groove 2 of the lever 20
Hook the dowel 22& engaged with the arm 2
2 in a counterclockwise direction around the rotating shaft 23 (in Fig. 1)
The shutter 5 attached to the rotating shaft 23 is rotated to
It is opened to supply and drop toner 4 from the replenishment toner storage chamber 1 into the developing chamber 2. On the other hand, the above solenoid 5L-2 is O
When N is pressed, the bent portion 20b of the lever 20 is moved to the arm 24.
Rotate counterclockwise to release it from the controller 25.
第2図においてコントローラ25がツリーになると、不
図示のり2ツチが入〕ギヤ26の回転が攪拌部材6の軸
6aに伝達され、攪拌部材6の回転によってトナーを連
通路3Kかき落す、。When the controller 25 becomes a tree in FIG. 2, the rotation of the gear 26 is transmitted to the shaft 6a of the stirring member 6, and the rotation of the stirring member 6 scrapes the toner off the communication path 3K.
上記のギヤ26社コントロー225>17−ム24で停
止されているときは軸6a上を中回転している。上記の
ようにソレノイド5L−b軸610回転とシャツjI5
の開閉の両動作のタイ2ングをとるのに兼用しうるもの
である。When the gear 26 controller 225>17-mem 24 is stopped, it rotates on the shaft 6a. As above, solenoid 5L-b axis 610 rotations and shirt jI5
It can be used for both opening and closing operations.
お
以上のような構成K”i9いて、トナーの少なくなった
ことを現像室2内のセンサ・S−1が検出すると、セン
サーS−110検出信号を受けてソレノイド5L−2が
ONとなシ、補充トナー貯蔵室1から前述した如くトナ
ーを落下補給する。With the configuration K''i9 as described above, when the sensor S-1 in the developing chamber 2 detects that the toner level is low, the solenoid 5L-2 turns ON in response to the sensor S-110 detection signal. , the toner is dropped and replenished from the replenishment toner storage chamber 1 as described above.
センサS−1のレベルまで補給されると、セン+8−1
からの信号がなくな−てソレノイドS−2は0FFI、
、)ナー補給が停止する。そのとき、コピーボタン10
5が押されていて、複写機がコピーモードになっていれ
ばコピーが開始される。When the level of sensor S-1 is replenished, sensor +8-1
There is no signal from the solenoid S-2, so the solenoid S-2 becomes 0FFI.
, )ner replenishment is stopped. At that time, copy button 10
If 5 is pressed and the copier is in copy mode, copying will begin.
なお、現像装置を上記のように補充トナー貯蔵室lと現
像室2に分けた理由は、現像室2に多−量のトナーを補
充し良状態で現像装置を運転すると、現像室下部のトナ
ーは上からのトナーの重さに押されてブロッキングし易
いからである。と9わけ磁性トナーは単位体積当りの重
量が重くブロッキングし易い。又、スリーブ80回転に
よる摩擦熱の発生、ブレード11とスリーブ80間隙屯
を通過することによるトナーの劣化、トリボ特性の変化
などが発生し易い。The reason why the developing device is divided into the replenishment toner storage chamber 1 and the developing chamber 2 as described above is that when the developing chamber 2 is replenished with a large amount of toner and the developing device is operated in good condition, the toner in the lower part of the developing chamber is This is because it is easily blocked by the weight of the toner from above. In particular, magnetic toner has a heavy weight per unit volume and is prone to blocking. Further, frictional heat is generated due to the rotation of the sleeve 80, deterioration of the toner due to the toner passing through the gap between the blade 11 and the sleeve 80, and changes in the triboelectric characteristics.
そこで、必要最小限のトナーを現像室2に入れておき、
ある程度消費したらその都度トナーを現像室に補充する
方が常に新鮮なトナーを現の量が少なくて経済的である
。Therefore, put the minimum amount of toner necessary into the developing chamber 2,
It is more economical to replenish the developing chamber with toner each time it is consumed to a certain extent, since the amount of fresh toner is always small.
補充トナー貯蔵室内のトナー残量はセンサーS−2で検
出される。センサーS−2がトナーの少なくなったこと
を検出すると、第3図に示す複写機の操作盤にランプ2
7が点灯してトナー貯蔵室lにトナーのなくなったこと
を表示する。このセンサーはトナーの有無O検出方法と
して、飼えば振動子を用い、その振動子上にトナーが乗
っているか否かを振動子の振動モードの変化で検出して
いる。また、1g4図に示す配置ランプ28と受光素子
29から成るセンサーS−2で、貯蔵室1内のトナーの
有無を検出している。The remaining amount of toner in the replenishment toner storage chamber is detected by sensor S-2. When sensor S-2 detects that the amount of toner is low, lamp 2 is displayed on the operation panel of the copier shown in FIG.
7 lights up to indicate that the toner storage chamber l is out of toner. This sensor uses a vibrator to detect the presence or absence of toner, and detects whether or not toner is on the vibrator by changing the vibration mode of the vibrator. Further, the presence or absence of toner in the storage chamber 1 is detected by a sensor S-2 consisting of a disposed lamp 28 and a light receiving element 29 shown in FIG. 1g4.
ところが、トナーの検出には誤動作が伴いやすく、また
センサー自体も故障、断線といったして、貯蔵室lから
トナー補給動作を行なった時、一定時間経過後もセンサ
ーS−1の検出信号が消滅せず、かつセンサーS−2が
貯蔵室1内にトナーのあることを示している場合は、下
記の事故が考えられる。However, toner detection is prone to malfunction, and the sensor itself may fail or be disconnected, and the detection signal from sensor S-1 may disappear even after a certain period of time when replenishing toner from storage chamber 1. If the sensor S-2 indicates that there is toner in the storage chamber 1, the following accident may occur.
1・・・センサーS−1の故障、
2・・・センサーS−2C)故障、
3・・・トナーが貯蔵室内でブロッキングを起ζし補給
されない、
特にlの事故のときは現像室内に大量のトナーが送シ込
まれ、固化トナーができたシ、軸受部にトナーが侵入し
機器を損傷して致命的な事量検出センサーS−2、S−
1とタイマー回路を用い、トナー補給開始後所定時間経
過してもセンサー5−10検出信号(トナーなし)が消
滅せず、センサーS−2がトナーありと示した場合は、
コピー動作を停止させると共に異常表示を行なうように
したものである。1...Failure of sensor S-1, 2...Failure of sensor S-2C), 3...Toner is blocked in the storage chamber and is not replenished, especially in the case of accident 1, a large amount of toner is in the developing chamber. When the toner is pumped in and solidified toner is formed, the toner enters the bearing and damages the equipment, causing fatal incident detection sensors S-2 and S-
1 and a timer circuit, if the sensor 5-10 detection signal (no toner) does not disappear even after a predetermined period of time has passed after the start of toner replenishment, and the sensor S-2 indicates that there is toner,
The copying operation is stopped and an error message is displayed.
第5図に本発明現像装置のシーケンス図を示す。図に示
したシーケンス図で、電源が投入されると、センサー3
−1.S−2でトナーの有無を検知じ、S−2でトナー
あり、S−1でトナーなしと検知されると、ソレノイド
5L−2が作動してトナー補給を開始する。トナー補給
が始まると4秒タイマー回路で4秒毎にトナーの有無を
見ている。FIG. 5 shows a sequence diagram of the developing device of the present invention. In the sequence diagram shown in the figure, when the power is turned on, sensor 3
-1. The presence or absence of toner is detected in S-2, and when the presence of toner is detected in S-2 and the absence of toner in S-1, the solenoid 5L-2 is activated to start toner replenishment. When toner replenishment begins, a 4-second timer circuit checks the presence or absence of toner every 4 seconds.
本発明の実施例に係るこの現像器では4秒8度の補給で
適量となるように設定し九がもつと短くと4又は長くと
も或い鉱連続的に見てもよい。This developing device according to an embodiment of the present invention is set so that an appropriate amount can be obtained by replenishing at 4 seconds and 8 degrees, and it can be regarded as continuous for 9 times as short as 4 times or as long as 4 times as long.
4秒経過後センサーS−1がトナーなしのままであシ、
かつセンサーS−2もトナーなしであればトナー補充が
必要であり、トナー補給ランプ27を点灯する。センサ
ーS−2がトナーありを検知した場合、4秒経過したに
も拘わらずセンサーS−1がトナーなしのままであるO
紘おかしいので、この場合にはコピー動作を停止させる
か、異常ランプ44を点灯させるか或いは電源を切る。After 4 seconds, sensor S-1 remains out of toner.
If the sensor S-2 is also out of toner, toner needs to be replenished, and the toner replenishment lamp 27 is turned on. If sensor S-2 detects that there is toner, sensor S-1 remains out of toner even after 4 seconds have passed.
In this case, the copying operation is stopped, the abnormality lamp 44 is turned on, or the power is turned off.
もちろん、図に示すように3つを表示するようにしても
よい。4秒経過後センサーS−1がトナーあ夛を検知し
た時はソレノイド5L−2を切って、コピー動作に移行
する。Of course, three may be displayed as shown in the figure. When the sensor S-1 detects toner accumulation after 4 seconds have elapsed, the solenoid 5L-2 is turned off and the copying operation begins.
(ステップI)
センサーS−2もS−1もトナーあ夛を検知した時拡コ
ピーボタンが押されているか否かを確認した上でコピー
動作に移る。コピーを所定枚数取り終わった後はコピー
動作を停止する。(Step I) When both the sensors S-2 and S-1 detect toner accumulation, it is checked whether the enlarge copy button is pressed or not, and then the copy operation is started. After making a predetermined number of copies, the copying operation is stopped.
(ステップ1)
S−2、S−1が共にトナーなしを検知した時はトナー
補給ランプ27を点灯する。また、S−2はトナーなし
、S−1はトナーあシの場合はトナー補給ランプ27を
点滅させる。(ステップIn)
本発明に係る現像器ではトナーセンサーS−2がトナー
なしを検出しても現像室2の部分に99枚以上コピー可
能な量の現像剤が入っているように構成されておシ、コ
ピー動作中はトナーの有無は見ていない。これは振動に
よりセンサーが誤動作し九シ、センサーに当っているト
ナーの量が変化したシする為と、コピーがトナーなし信
号等によって機械が停止すると回復後のシーケンスが複
雑となるので所定コピ一枚数を取シ終ってからトナーの
有無を見ている。つまり、このような複写機においては
仮シにコピー動作途中でトナーがなくなってもコピ一枚
数設定が99枚のときは99枚コピー終了後現俸室内の
トナーの有無を検出E7、ないと色はソレノイド5L−
2をONしてトナー補給をし、4秒たってからトナー補
給が完了したときはコピー動作を可能とし、トナー補給
が完了しないときはトナー補給ランプの点灯もしくは異
常ランプの点灯を行う。(Step 1) When both S-2 and S-1 detect that there is no toner, the toner replenishment lamp 27 is turned on. Further, when S-2 is out of toner and S-1 is empty, the toner replenishment lamp 27 is blinked. (Step In) The developing device according to the present invention is configured such that even if the toner sensor S-2 detects that there is no toner, the developing chamber 2 contains enough developer to make 99 or more copies. The presence or absence of toner is not checked during the copy operation. This is because the sensor malfunctions due to vibration, and the amount of toner hitting the sensor changes. Also, if the copy machine stops due to an out-of-toner signal, the sequence after recovery becomes complicated, so the specified copy After counting the number of sheets, check whether there is toner or not. In other words, in such a copying machine, even if the toner runs out during copying on a temporary paper, if the number of copies per copy is set to 99, the presence or absence of toner in the current storage chamber is detected after copying 99 copies, and if there is no toner, the color is is solenoid 5L-
2 is turned on to replenish toner, and when toner replenishment is completed after 4 seconds, copying operation is enabled, and if toner replenishment is not completed, the toner replenishment lamp or error lamp is turned on.
本発明に係る現像器では第5図のシーケンス図の如くセ
ンサーS−1がトナーの有無を最大場合でも現像室2内
には99枚以上コピーのとれる量のトナーがある為問題
は生じない。99枚以上コピー可能な状態でトナーなし
のランプヲ点灯すると、ランプのついた時点でカートリ
ッジでトナー補給をしておけば、コピー中にトナーがな
くなって複写機が停止する心配がないため、複写機のシ
ーケンスや操作者がコピーを何枚取ったかを記憶してお
かねばならないといった煩雑さから開放される利点があ
る。In the developing device according to the present invention, even when the sensor S-1 indicates the presence or absence of toner at the maximum as shown in the sequence diagram of FIG. 5, no problem occurs because there is enough toner in the developing chamber 2 to make 99 or more copies. If the out-of-toner lamp lights up when 99 copies or more are ready to be copied, if you replenish the toner in the cartridge when the lamp lights up, you will not have to worry about the copying machine stopping due to running out of toner while copying. This has the advantage of being freed from the complexity of having to remember the sequence of operations and how many copies the operator has made.
又本発明に係る現像器でL1仮シにセンサーS〜2がト
ナーなしでも現りl室2内のトナーセンサーS−1がト
ナーあシのとき杜、コピー動作可能なこと祉もちろんで
ちる。この□ときLトナー補給ランプを点滅させ、また
両方ともトナーなしの時にはつけっ放しとなる等完全に
表示方法で区別をつければ、トナーの少なくなって来た
ことが操作者にわかり、早めにトナー補給ができるので
操作者にとって都合が良い。即ち本例では表示パネルの
大きさやコストの点から表示器を共用し、現像する仁と
に近い側のセンサーS−1のところにのみトナーがある
ときは点滅、両方にないときは点灯という表示をしてい
るが、渕えばもう一つ表示器を設け、トナーの少なくな
りたことを別表示しても良いし、色違い等で表示しても
よい。Also, in the developing device according to the present invention, it is possible to perform a copying operation even when the sensors S-2 in the L1 temporary space appear even when there is no toner, and the toner sensor S-1 in the L1 chamber 2 is empty of toner. If the L toner replenishment lamp blinks at this time, and if both are left on when there is no toner, the operator can tell when the toner is running low and can use it as soon as possible. It is convenient for the operator because toner can be replenished. That is, in this example, due to the size and cost of the display panel, the display is shared, and the display blinks when there is toner only at sensor S-1, which is closer to the developer and the developer, and lights up when there is no toner in both. However, it is possible to provide another display to indicate that the toner is low, or to display it in a different color.
なお、第1図において、補充トナー収納容器30は開口
31aを有する円筒状の中筒31と開口32&を有する
円筒状の外筒32を回転自在に嵌合したtのである。こ
の外筒32の外面には左右非対称にガイド凸状33&・
33bが形成されているので、補充トナー収納容器30
を補名トナー貯蔵室1内に装填すると、開口32&は必
ず下向となる。従って、装填後、中筒31を回転させて
その開口31aを開口32&に合致させることによシ、
中筒31内の補充トナーは貯蔵室1に落下供給される。In FIG. 1, the replenishment toner storage container 30 has a cylindrical inner tube 31 having an opening 31a and a cylindrical outer tube 32 having an opening 32, which are rotatably fitted together. The outer surface of the outer cylinder 32 has a guide convex shape 33 asymmetrically on the left and right sides.
33b, the refill toner storage container 30
When loaded into the complementary toner storage chamber 1, the opening 32& always faces downward. Therefore, after loading, by rotating the middle cylinder 31 and aligning its opening 31a with the opening 32&,
The replenishment toner in the inner cylinder 31 is supplied by falling into the storage chamber 1.
34は中筒31の中心に同転自在に設けた軸、35は軸
34に取付は九針金等のトナーかき出し部材である。34 is a shaft provided at the center of the middle cylinder 31 so as to rotate freely; 35 is a toner scraping member such as a nine wire attached to the shaft 34;
第2図において、36は外筒32の端面を貫通させた内
筒31の端面の突出軸、37は突出軸36に設けた保合
部材である。補充トナー収納容器30を貯蔵室IK装填
する際は、保合部材37を貯蔵室側板のU溝38の向き
に合せて挿入し、装填後、中筒31を上記のように開口
a1mを開口32a K合致させるために回転させるこ
とによシ、係合部材37は鎖線示の向きによって貯蔵室
側板に係合し、補充トナー収納容器30をトナー排出状
態のまま取外すことを防止する。In FIG. 2, 36 is a protruding shaft of the end face of the inner cylinder 31 that passes through the end face of the outer cylinder 32, and 37 is a retaining member provided on the protruding shaft 36. When loading the replenishment toner storage container 30 into the storage chamber IK, insert the retaining member 37 in the direction of the U groove 38 on the storage chamber side plate, and after loading, insert the inner cylinder 31 from the opening a1m to the opening 32a as described above. By rotating to match K, the engaging member 37 engages with the side plate of the storage chamber in the direction shown by the chain line, thereby preventing the replenishment toner storage container 30 from being removed while the toner is being discharged.
第3図中、40は警告表示部、41は枚数表示部、42
はカセット表示部、43はコピー操作部である。In Fig. 3, 40 is a warning display section, 41 is a number display section, and 42
4 is a cassette display section, and 43 is a copy operation section.
以上述べたように、本発明はトナー貯蔵室内と現像室内
のトナーを別個に検知し、異常が生じたときには異常表
示又は各機器の動作を不動にするようにしたから、トナ
ーの凝集やセンサーの故障等で機器を損傷するようなこ
とがなくなった。As described above, the present invention detects the toner in the toner storage chamber and the developing chamber separately, and when an abnormality occurs, the abnormality is displayed or the operation of each device is immobilized. Equipment is no longer damaged due to breakdowns, etc.
第1図は本発明現像装置の横断側面図、第2図は動力伝
達系を示す上記現像装置の側面図、第3図は複写機の操
作盤図、第4図はトナーの有無を検出する手段を示す補
充トナー貯蔵室の一部の横断面図、第5図はシーケンス
図である。
1は補充トナー貯蔵室、2は現像室、3は連通路、4は
トナー、5はシャッタ、6は攪拌部材、7,9はマグネ
ットローラ、s、1oはスリーブ、IIUブレード、1
2は仕切板、15は感光ドラム、S−1,S−2はトナ
ーの有無兼出願人 キャノン株式会社
躬1 ノFIG. 1 is a cross-sectional side view of the developing device of the present invention, FIG. 2 is a side view of the developing device showing the power transmission system, FIG. 3 is a view of the operation panel of the copying machine, and FIG. 4 is a method for detecting the presence or absence of toner. FIG. 5 is a cross-sectional view of a portion of the replenishment toner storage chamber showing the means, and FIG. 5 is a sequence diagram. 1 is a replenishment toner storage chamber, 2 is a developing chamber, 3 is a communication path, 4 is toner, 5 is a shutter, 6 is a stirring member, 7 and 9 are magnet rollers, s, 1o are sleeves, IIU blades, 1
2 is a partition plate, 15 is a photosensitive drum, S-1 and S-2 are presence or absence of toner and applicant: Canon Co., Ltd. 1 No.
Claims (1)
、現像室内の現像剤量を検出する検出手段S−1と、現
像剤貯蔵室内の現像剤量を検出する検出手段S−2とを
有しており、上記検出手段S−1の検出信号が出力され
た時には上記補充手段を働かせて現像剤を現像室に補充
し、上記の検出信号が出力されたときから所定時間経過
後、上記検出手段S−1が現像剤のない状態を示し、か
つ上記検出手段S−2が現像剤のあることを示すときは
、画像形成装置又は上記補充手段を不動とするか異常表
示をすることを特徴とする現像装置。A replenishing means for replenishing the developing chamber with developer from the developer storage chamber, a detecting means S-1 for detecting the amount of developer in the developing chamber, and a detecting means S-2 for detecting the amount of developer in the developing chamber. When the detection signal of the detection means S-1 is output, the replenishment means is activated to replenish the developing chamber with developer, and after a predetermined period of time has elapsed since the detection signal was output. When the detecting means S-1 indicates that there is no developer and the detecting means S-2 indicates that there is developer, the image forming device or the replenishing means may be immobilized or an abnormality may be displayed. A developing device characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP906382A JPS58126555A (en) | 1982-01-23 | 1982-01-23 | Developing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP906382A JPS58126555A (en) | 1982-01-23 | 1982-01-23 | Developing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58126555A true JPS58126555A (en) | 1983-07-28 |
JPH0358115B2 JPH0358115B2 (en) | 1991-09-04 |
Family
ID=11710150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP906382A Granted JPS58126555A (en) | 1982-01-23 | 1982-01-23 | Developing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58126555A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61203480A (en) * | 1985-03-06 | 1986-09-09 | Canon Inc | Developing device |
JPS61203481A (en) * | 1985-03-06 | 1986-09-09 | Canon Inc | Developing device |
JPS6278579A (en) * | 1985-09-30 | 1987-04-10 | Mita Ind Co Ltd | Toner replenishing device |
FR2623923A1 (en) * | 1987-11-30 | 1989-06-02 | Toshiba Kk | IMAGE FORMING APPARATUS |
EP0514874A2 (en) * | 1991-05-20 | 1992-11-25 | Mita Industrial Co., Ltd. | Toner feeding device |
JP2007298585A (en) * | 2006-04-28 | 2007-11-15 | Kyocera Mita Corp | Image forming apparatus |
-
1982
- 1982-01-23 JP JP906382A patent/JPS58126555A/en active Granted
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61203480A (en) * | 1985-03-06 | 1986-09-09 | Canon Inc | Developing device |
JPS61203481A (en) * | 1985-03-06 | 1986-09-09 | Canon Inc | Developing device |
JPS6278579A (en) * | 1985-09-30 | 1987-04-10 | Mita Ind Co Ltd | Toner replenishing device |
FR2623923A1 (en) * | 1987-11-30 | 1989-06-02 | Toshiba Kk | IMAGE FORMING APPARATUS |
EP0514874A2 (en) * | 1991-05-20 | 1992-11-25 | Mita Industrial Co., Ltd. | Toner feeding device |
JP2007298585A (en) * | 2006-04-28 | 2007-11-15 | Kyocera Mita Corp | Image forming apparatus |
JP4576355B2 (en) * | 2006-04-28 | 2010-11-04 | 京セラミタ株式会社 | Image forming apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPH0358115B2 (en) | 1991-09-04 |
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