JPS5541414A - Developing device - Google Patents

Developing device

Info

Publication number
JPS5541414A
JPS5541414A JP11414678A JP11414678A JPS5541414A JP S5541414 A JPS5541414 A JP S5541414A JP 11414678 A JP11414678 A JP 11414678A JP 11414678 A JP11414678 A JP 11414678A JP S5541414 A JPS5541414 A JP S5541414A
Authority
JP
Japan
Prior art keywords
pump
toner
filter
developing chamber
damaging
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
JP11414678A
Other languages
Japanese (ja)
Other versions
JPS633308B2 (en
Inventor
Satoru Tomita
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 JP11414678A priority Critical patent/JPS5541414A/en
Publication of JPS5541414A publication Critical patent/JPS5541414A/en
Publication of JPS633308B2 publication Critical patent/JPS633308B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To eliminate defects such as damaging of pumps, etc. by providing a filter for removing developer between the outlet side of a developing chamber and the suction side of a pump and re-introducing the developer having been removed by being bypassed of the pump. CONSTITUTION:Electrostatic latent images are developed in a developing chamber 2 and dry toner is supplied into the developing chamber 2 from a hopper 3. The rest of the toner having been used in the develpment is carried together with air by the suction force of a pump 5 and is filtered by a filter 6 on the way. Hence, the air mixed with just a small amount of toner is sucked in the pump 5. The toner on the filter 6 scraped off by a brush 8 is again sent into the circulating path 4 by the air flow through a bypass transport path 9. Since the toner does not pass through the pump as a rule in this way, damaging of the pump does not occur and excessive suction of a large amount of the toner does not occur either.
JP11414678A 1978-09-19 1978-09-19 Developing device Granted JPS5541414A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11414678A JPS5541414A (en) 1978-09-19 1978-09-19 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11414678A JPS5541414A (en) 1978-09-19 1978-09-19 Developing device

Publications (2)

Publication Number Publication Date
JPS5541414A true JPS5541414A (en) 1980-03-24
JPS633308B2 JPS633308B2 (en) 1988-01-22

Family

ID=14630289

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11414678A Granted JPS5541414A (en) 1978-09-19 1978-09-19 Developing device

Country Status (1)

Country Link
JP (1) JPS5541414A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4627705A (en) * 1984-07-06 1986-12-09 Savin Corporation Multiple color liquid developer electrophotographic copying machine and liquid distribution system therefor
JPH02124551A (en) * 1988-07-12 1990-05-11 Suraidetsukusu Kk Projector for light transmitting plate filing sheet
US7625686B2 (en) 2003-03-06 2009-12-01 Konica Minolta Holdings, Inc. Image forming method
JP2012058609A (en) * 2010-09-10 2012-03-22 Ricoh Co Ltd Developing device and image forming apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3038442A (en) * 1958-12-29 1962-06-12 Burroughs Corp Electrostatic developing apparatus
JPS446158Y1 (en) * 1965-03-19 1969-03-05

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3038442A (en) * 1958-12-29 1962-06-12 Burroughs Corp Electrostatic developing apparatus
JPS446158Y1 (en) * 1965-03-19 1969-03-05

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4627705A (en) * 1984-07-06 1986-12-09 Savin Corporation Multiple color liquid developer electrophotographic copying machine and liquid distribution system therefor
JPH02124551A (en) * 1988-07-12 1990-05-11 Suraidetsukusu Kk Projector for light transmitting plate filing sheet
US7625686B2 (en) 2003-03-06 2009-12-01 Konica Minolta Holdings, Inc. Image forming method
JP2012058609A (en) * 2010-09-10 2012-03-22 Ricoh Co Ltd Developing device and image forming apparatus

Also Published As

Publication number Publication date
JPS633308B2 (en) 1988-01-22

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