JPH03242666A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPH03242666A JPH03242666A JP4013790A JP4013790A JPH03242666A JP H03242666 A JPH03242666 A JP H03242666A JP 4013790 A JP4013790 A JP 4013790A JP 4013790 A JP4013790 A JP 4013790A JP H03242666 A JPH03242666 A JP H03242666A
- Authority
- JP
- Japan
- Prior art keywords
- gap
- doctor blade
- sleeve
- attached
- upper body
- 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
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000013019 agitation Methods 0.000 description 2
- 241000252233 Cyprinus carpio Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、電子写真式印字装置の現像装置、特にドクタ
ーブレードとスリーブとの間隙設定に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a developing device of an electrophotographic printing device, and in particular to setting a gap between a doctor blade and a sleeve.
従来のドクターブリードの間隙設定は、ドクターブレー
ドを現像器の本体に取付けるためのネジとシックネスゲ
ージまたは間隙値のでている間隙アジャストをドクター
ブレードとスリーブ間にはさみ、間隙値を調整し、再び
ネジで締めつけていた。To set the gap in a conventional doctor bleed, insert a screw for attaching the doctor blade to the main body of the developer and a thickness gauge or gap adjuster with the gap value displayed between the doctor blade and the sleeve, adjust the gap value, and then tighten the screw again. It was tight.
上述した従来の方法では、間隙設定後、間隙値を保つた
めには、ドクターブレードをスリーブ方向に押し付けた
状態で現像器に取り付けなければならず、その状態でネ
ジを締め付けるのは困難であった。In the conventional method described above, in order to maintain the gap value after setting the gap, it is necessary to attach the doctor blade to the developing device with the doctor blade pressed toward the sleeve, and it is difficult to tighten the screw in this state. .
また、ネジ止めのときに間隙設定値が変化してしまうこ
とがある。Furthermore, the gap setting value may change when screwing.
さらに、現像器にドクターブレードを取り付けるため温
度変化や経年変化によるゆがみなどが直接ドクターブレ
ードのゆがみとなり、間隙値の変化が発生する。Furthermore, since a doctor blade is attached to the developing device, distortions due to temperature changes and aging directly result in distortions of the doctor blade, causing changes in the gap value.
本発明によれば、「現像点へのトナー供給量および穂立
ちを規制するドクターブレードと、前記ドクターブレー
ドとスリーブとの間隙を設定する機構とを有することを
特徴とする現像装置」が得られる。According to the present invention, it is possible to obtain a "developing device characterized by having a doctor blade that regulates the amount of toner supplied to a developing point and the formation of spikes, and a mechanism that sets a gap between the doctor blade and the sleeve." .
次に、本発明の一実施例を示した図面を参照して、本発
明をより詳細に説明する。Next, the present invention will be described in more detail with reference to the drawings showing one embodiment of the present invention.
第１図を参照すると、本発明の一実施例においては、ア
ンダボデイ１には、トナーホッパーのトナーを攪拌室に
供給するためのホッパーミキサー９と、攪拌室において
トナーとキャリアとを攪拌するためのミキサー８と、現
像剤を現像点へ搬送するための固定磁石式のスリーブ７
とが組込まれている。Referring to FIG. 1, in one embodiment of the present invention, the underbody 1 includes a hopper mixer 9 for supplying toner from a toner hopper to an agitation chamber, and a hopper mixer 9 for agitating toner and carrier in the agitation chamber. A mixer 8 and a fixed magnetic sleeve 7 for transporting the developer to the development point.
is incorporated.
アッパボディ２には、間隙値のででいる間隙アジャスト
５が取り付けられているドクターブリード４をスリーブ
７方向に押し付けるためのスプリング３が取り付けられ
ている。アンダボデイ１にアッパボディ２をネジによっ
て取り付け、トナーもれのためのシール６をはさみこむ
。A spring 3 is attached to the upper body 2 for pressing the doctor bleed 4, to which the gap adjuster 5 for adjusting the gap value is attached, toward the sleeve 7. An upper body 2 is attached to an underbody 1 with screws, and a seal 6 for preventing toner leakage is inserted.
スリーブ７は、矢印方向に回転するが、ドクタースレー
ブ４にも矢印方向の力がかかるため、その負けないよう
にアッパボディ２の強度が必要となる。The sleeve 7 rotates in the direction of the arrow, but since a force in the direction of the arrow is also applied to the doctor slave 4, the strength of the upper body 2 is required to avoid the force.
また、ドクターブレード４の入るスリットは、中間ばね
程度の精度が必要となる。Further, the slit into which the doctor blade 4 is inserted needs to have a precision comparable to that of an intermediate spring.
以上説明したように、本発明によれば、間隙アジャスト
と押下機構の間隙設定機構により、間隙設定を容易にで
きる。As described above, according to the present invention, the gap can be easily set by the gap adjustment and the gap setting mechanism of the push-down mechanism.
また、ドクターブレードをネイで強制的に締めつけない
ため、たわみの発生がなく、モールドの温度変化や経年
変化に対して、ドクターブレードがフリーであるため、
間隙値の変動が少なくできる。In addition, since the doctor blade is not forcibly tightened with a nail, there is no bending, and the doctor blade is free from changes in mold temperature and changes over time.
Fluctuations in gap values can be reduced.
第１図は本発明の一実施例の断面図、第２図は本実施例
における押下機構の断面図である。
ｌ・・・アンダボデイ、２・・・アッパボディ、３・・
・スプリング、４・・・ドクターブレード、５・・・間
隙アジャスト、６・・・シール、７・・・スリーブ、８
・・・ミキサー、９・・・ホッパミキサー。
に肛鯉００恕ネFIG. 1 is a cross-sectional view of an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a push-down mechanism in this embodiment. l...underbody, 2...upper body, 3...
・Spring, 4... Doctor blade, 5... Gap adjustment, 6... Seal, 7... Sleeve, 8
...Mixer, 9...Hopper mixer. Anal carp 00
Claims (1)
ーブレードと、前記ドクターブレードとスリーブとの間
隙を設定する機構とを有することを特徴とする現像装置
。A developing device comprising: a doctor blade that regulates the amount of toner supplied to a developing point and the formation of spikes; and a mechanism that sets a gap between the doctor blade and the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4013790A JPH03242666A (en) | 1990-02-20 | 1990-02-20 | Developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4013790A JPH03242666A (en) | 1990-02-20 | 1990-02-20 | Developing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03242666A true JPH03242666A (en) | 1991-10-29 |
Family
ID=12572401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4013790A Pending JPH03242666A (en) | 1990-02-20 | 1990-02-20 | Developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03242666A (en) |
-
1990
- 1990-02-20 JP JP4013790A patent/JPH03242666A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1221636A3 (en) | Developing device for an image forming apparatus | |
| JPH03242666A (en) | Developing device | |
| JPS55127571A (en) | Control method of electrophotographic copier | |
| DE3366226D1 (en) | Improvements relating to toning | |
| JPS63180984A (en) | Developing device for electrophotographic recording device | |
| EP0424136A3 (en) | Carrier of developer, process for preparation thereof, and developing method using same | |
| JPH01230081A (en) | Developing device | |
| CA2183007A1 (en) | An electrostatographic printer | |
| JPS5636672A (en) | Developing machine | |
| JPS5589859A (en) | Method and apparatus for forming stable image | |
| US2194414A (en) | Calibrating device | |
| JPH01188875A (en) | Developing device | |
| JPS63190236A (en) | Electron probe analyzer | |
| JPS6122201A (en) | Magnet stand mounted measuring device | |
| JPH0240670A (en) | Developing device for printer | |
| JPS55156973A (en) | Bias power source control system in copying machine | |
| JPH0511586A (en) | Developing device | |
| JPS56150773A (en) | Developing device | |
| JPH0325604A (en) | Power supply/voltage control system | |
| ES2140084T3 (en) | PROCEDURE FOR THE DETERMINATION OF A CONTRIBUTION OF INTERFERENCE MAGNITUDES. | |
| JPS57664A (en) | Image form | |
| JPS5577756A (en) | Method and apparatus for forming image | |
| JPH02183283A (en) | Developing device | |
| JPS6180182A (en) | Developing device for non-magnetic one component | |
| JPS56128962A (en) | Latent image forming method of variable magnification device |