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JPS5349439A - Method for detecting and replacing degraded developer - Google Patents

Method for detecting and replacing degraded developer

Info

Publication number
JPS5349439A
JPS5349439A JP12467476A JP12467476A JPS5349439A JP S5349439 A JPS5349439 A JP S5349439A JP 12467476 A JP12467476 A JP 12467476A JP 12467476 A JP12467476 A JP 12467476A JP S5349439 A JPS5349439 A JP S5349439A
Authority
JP
Japan
Prior art keywords
detecting
developer
degraded developer
replacing degraded
replacing
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
Application number
JP12467476A
Other languages
English (en)
Inventor
Koji Sakamoto
Seiichi Miyagawa
Susumu Tatsumi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP12467476A priority Critical patent/JPS5349439A/ja
Publication of JPS5349439A publication Critical patent/JPS5349439A/ja
Pending legal-status Critical Current

Links

Landscapes

  • Dry Development In Electrophotography (AREA)
JP12467476A 1976-10-18 1976-10-18 Method for detecting and replacing degraded developer Pending JPS5349439A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12467476A JPS5349439A (en) 1976-10-18 1976-10-18 Method for detecting and replacing degraded developer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12467476A JPS5349439A (en) 1976-10-18 1976-10-18 Method for detecting and replacing degraded developer

Publications (1)

Publication Number Publication Date
JPS5349439A true JPS5349439A (en) 1978-05-04

Family

ID=14891246

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12467476A Pending JPS5349439A (en) 1976-10-18 1976-10-18 Method for detecting and replacing degraded developer

Country Status (1)

Country Link
JP (1) JPS5349439A (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60153066A (ja) * 1984-01-20 1985-08-12 Ricoh Co Ltd 現像剤交換制御方法
JPS60192968A (ja) * 1984-03-14 1985-10-01 Konishiroku Photo Ind Co Ltd 画像形成装置
JPH04127178A (ja) * 1990-06-01 1992-04-28 Sharp Corp 現像装置の現像剤回収装置
JPH04204678A (ja) * 1990-11-30 1992-07-27 Fujitsu Ltd 現像装置
US5933690A (en) * 1996-03-29 1999-08-03 Fujitsu Limited Toner recovery device
EP1607804A2 (en) 2004-06-18 2005-12-21 Ricoh Company, Ltd. Developing device methods of image forming and apparatus for image forming

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60153066A (ja) * 1984-01-20 1985-08-12 Ricoh Co Ltd 現像剤交換制御方法
JPS60192968A (ja) * 1984-03-14 1985-10-01 Konishiroku Photo Ind Co Ltd 画像形成装置
JPH04127178A (ja) * 1990-06-01 1992-04-28 Sharp Corp 現像装置の現像剤回収装置
JPH04204678A (ja) * 1990-11-30 1992-07-27 Fujitsu Ltd 現像装置
US5933690A (en) * 1996-03-29 1999-08-03 Fujitsu Limited Toner recovery device
US6212340B1 (en) 1996-03-29 2001-04-03 Fujitsu Limited Image forming apparatus utilizing a two-component developing apparatus with automatic toner replenishment and developer replacement
EP1607804A2 (en) 2004-06-18 2005-12-21 Ricoh Company, Ltd. Developing device methods of image forming and apparatus for image forming
US7346286B2 (en) 2004-06-18 2008-03-18 Ricoh Company, Ltd. Method and apparatus for image forming effectively detecting deterioration of developer

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