JPS6415771A - Developing device - Google Patents

Developing device

Info

Publication number
JPS6415771A
JPS6415771A JP62173189A JP17318987A JPS6415771A JP S6415771 A JPS6415771 A JP S6415771A JP 62173189 A JP62173189 A JP 62173189A JP 17318987 A JP17318987 A JP 17318987A JP S6415771 A JPS6415771 A JP S6415771A
Authority
JP
Japan
Prior art keywords
developer
roller
developing
shutter
development
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
JP62173189A
Other languages
Japanese (ja)
Other versions
JP2573232B2 (en
Inventor
Tamio Yoshiebisu
Masahito Asanuma
Masatoshi Kaneshige
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP62173189A priority Critical patent/JP2573232B2/en
Priority to US07/216,359 priority patent/US4914481A/en
Priority to DE8888110958T priority patent/DE3869496D1/en
Priority to EP88110958A priority patent/EP0298504B1/en
Publication of JPS6415771A publication Critical patent/JPS6415771A/en
Application granted granted Critical
Publication of JP2573232B2 publication Critical patent/JP2573232B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To enable the formation of always normal images by providing a shutter to a passage for supplying a developer to a developing section and opening and closing the passage to prevent developing conditions from changing. CONSTITUTION:The developer is supplied to a developing roller 2. The developer is sent, upon ending of the development, to a conveying roller 4 by rotation of the roller 2 and is further conveyed by the roller 4 so that the developer is circulated and supplied along a scraper 6 to an agitating roller 7. The control to stop the supply of the developer is thereafter executed when the need for development with a developing device is eliminated upon ending of the development of a photosensitive body 3. Since the shutter 8 is thereby rotated 90 deg. and is stopped, the non-slit part of the shutter 8 closes an inlet 12 and outlet 13 of the developer supplying passage. The developer is, therefore, no longer supplied to the roller 2 and is set in a non-developable state. The spacing between the developing part and a recording medium is always constant and the developing conditions do not change according to this constitution. The always normal images are thus formed.
JP62173189A 1987-07-09 1987-07-09 Developing device Expired - Fee Related JP2573232B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP62173189A JP2573232B2 (en) 1987-07-09 1987-07-09 Developing device
US07/216,359 US4914481A (en) 1987-07-09 1988-07-07 Developing apparatus
DE8888110958T DE3869496D1 (en) 1987-07-09 1988-07-08 DEVELOPMENT DEVICE.
EP88110958A EP0298504B1 (en) 1987-07-09 1988-07-08 Developing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62173189A JP2573232B2 (en) 1987-07-09 1987-07-09 Developing device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP5035221A Division JPH0816811B2 (en) 1993-02-24 1993-02-24 Development device

Publications (2)

Publication Number Publication Date
JPS6415771A true JPS6415771A (en) 1989-01-19
JP2573232B2 JP2573232B2 (en) 1997-01-22

Family

ID=15955744

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62173189A Expired - Fee Related JP2573232B2 (en) 1987-07-09 1987-07-09 Developing device

Country Status (1)

Country Link
JP (1) JP2573232B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02262172A (en) * 1989-03-31 1990-10-24 Sharp Corp Developing device
US5213173A (en) * 1990-10-26 1993-05-25 Jidosha Kiki Co., Ltd. Electric power steering apparatus
JP2014163947A (en) * 2013-02-21 2014-09-08 Ricoh Co Ltd Developing apparatus, process cartridge including the same, and image forming apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5225743U (en) * 1975-08-13 1977-02-23
JPS61201278A (en) * 1985-03-05 1986-09-05 Ricoh Co Ltd Developing device for electrophotographic copying machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5225743U (en) * 1975-08-13 1977-02-23
JPS61201278A (en) * 1985-03-05 1986-09-05 Ricoh Co Ltd Developing device for electrophotographic copying machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02262172A (en) * 1989-03-31 1990-10-24 Sharp Corp Developing device
US5213173A (en) * 1990-10-26 1993-05-25 Jidosha Kiki Co., Ltd. Electric power steering apparatus
JP2014163947A (en) * 2013-02-21 2014-09-08 Ricoh Co Ltd Developing apparatus, process cartridge including the same, and image forming apparatus

Also Published As

Publication number Publication date
JP2573232B2 (en) 1997-01-22

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees