JPH0479367U - - Google Patents

Info

Publication number
JPH0479367U
JPH0479367U JP12261390U JP12261390U JPH0479367U JP H0479367 U JPH0479367 U JP H0479367U JP 12261390 U JP12261390 U JP 12261390U JP 12261390 U JP12261390 U JP 12261390U JP H0479367 U JPH0479367 U JP H0479367U
Authority
JP
Japan
Prior art keywords
developing device
magnetic seal
toner
cloud
applying
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
Application number
JP12261390U
Other languages
Japanese (ja)
Other versions
JP2547153Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1990122613U priority Critical patent/JP2547153Y2/en
Publication of JPH0479367U publication Critical patent/JPH0479367U/ja
Application granted granted Critical
Publication of JP2547153Y2 publication Critical patent/JP2547153Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

【図１】本考案の一実施例が適用されるカラー
複写機の概略断面図である。FIG. 1 is a schematic sectional view of a color copying machine to which an embodiment of the present invention is applied.

【図２】この複写機
の現像器の概略断面図である。FIG. 2 is a schematic cross-sectional view of a developing device of this copying machine.

【図３】この現像
器の概略部分拡大断面図である。FIG. 3 is a schematic partially enlarged sectional view of this developing device.

【図４】この実
施例におけるマグネツトシールの模式図である。
FIG. 4 is a schematic diagram of a magnetic seal in this embodiment.

【図５】従来のマグネツトシールを説明する図で
ある。FIG. 5 is a diagram illustrating a conventional magnetic seal.

【図６】一般的なマグネツトシールを示す
図である。 符号の説明、５……画像形成装置、５１……感
光ドラム、５２……第１現像手段、５３……第２
現像手段、１００……マグネツトシール、１０３
……オン・オフスイツチ、１０４……制御装置、
３００……クリーニング装置、Ｅ……電源。FIG. 6 is a diagram showing a general magnetic seal. Explanation of symbols, 5... Image forming device, 51... Photosensitive drum, 52... First developing means, 53... Second
Developing means, 100...Magnetic seal, 103
...On/off switch, 104...Control device,
300...Cleaning device, E...Power supply.

Claims (1)

【実用新案登録請求の範囲】 現像器にマグネツトシールを設け、前記現像器
内のクラウドトナーを該マグネツトシールにより
吸着して前記現像器外へ散乱しないように遮蔽す
る現像器のマグネツトシールにおけるトナー滞留
制御方式において、 前記マグネツトシールに前記クラウドトナーと
同極性のバイアス電圧をかける電圧付与手段を設
け、前記現像器の非現像領域において、該電圧付
与手段により前記マグネツトシールに前記クラウ
ドトナーと同極性のバイアス電圧をかけることに
より、前記マグネツトシールに吸着されている前
記クラウドトナーを感光ドラムに現像させること
を特徴とする現像器のマグネツトシールにおける
トナー滞留制御方式。[Claims for Utility Model Registration] A magnetic seal for a developing device, which includes a magnetic seal provided in the developing device, and which absorbs cloud toner in the developing device and shields it from scattering outside the developing device. In the toner retention control method, a voltage applying means is provided for applying a bias voltage of the same polarity as the cloud toner to the magnetic seal, and the voltage applying means applies the cloud to the magnetic seal in a non-developing area of the developing device. A toner retention control system in a magnetic seal of a developing device, characterized in that the cloud toner adsorbed on the magnetic seal is developed on a photosensitive drum by applying a bias voltage of the same polarity as the toner.
JP1990122613U 1990-11-24 1990-11-24 Image forming device Expired - Lifetime JP2547153Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990122613U JP2547153Y2 (en) 1990-11-24 1990-11-24 Image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990122613U JP2547153Y2 (en) 1990-11-24 1990-11-24 Image forming device

Publications (2)

Publication Number Publication Date
JPH0479367U true JPH0479367U (en) 1992-07-10
JP2547153Y2 JP2547153Y2 (en) 1997-09-10

Family

ID=31870377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990122613U Expired - Lifetime JP2547153Y2 (en) 1990-11-24 1990-11-24 Image forming device

Country Status (1)

Country Link
JP (1) JP2547153Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013029673A (en) * 2011-07-28 2013-02-07 Ricoh Co Ltd Developing device and image forming apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6129364U (en) * 1984-07-26 1986-02-21 富士ゼロックス株式会社 Developer sealing device of developing device
JPS61262767A (en) * 1985-05-17 1986-11-20 Matsushita Electric Ind Co Ltd Developing device
JPS6258464U (en) * 1985-09-30 1987-04-11

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6129364U (en) * 1984-07-26 1986-02-21 富士ゼロックス株式会社 Developer sealing device of developing device
JPS61262767A (en) * 1985-05-17 1986-11-20 Matsushita Electric Ind Co Ltd Developing device
JPS6258464U (en) * 1985-09-30 1987-04-11

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013029673A (en) * 2011-07-28 2013-02-07 Ricoh Co Ltd Developing device and image forming apparatus

Also Published As

Publication number Publication date
JP2547153Y2 (en) 1997-09-10

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