JPS6421469A - Developing device for copying machine - Google Patents

Developing device for copying machine

Info

Publication number
JPS6421469A
JPS6421469A JP17846787A JP17846787A JPS6421469A JP S6421469 A JPS6421469 A JP S6421469A JP 17846787 A JP17846787 A JP 17846787A JP 17846787 A JP17846787 A JP 17846787A JP S6421469 A JPS6421469 A JP S6421469A
Authority
JP
Japan
Prior art keywords
developer
collection
supplying
cartridge
opening
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
JP17846787A
Other languages
Japanese (ja)
Other versions
JP2552869B2 (en
Inventor
Shinsuke Saida
Toshiki Anzai
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 JP62178467A priority Critical patent/JP2552869B2/en
Priority to US07/218,562 priority patent/US4913087A/en
Publication of JPS6421469A publication Critical patent/JPS6421469A/en
Application granted granted Critical
Publication of JP2552869B2 publication Critical patent/JP2552869B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To inexpensively and easily realize the exchange of a developer and to efficiently perform the collection of the developer, by performing the supplying and the collection of the developer by one developer cartridge by using the developer cartridge in common as the supplying device and also as the collection device of the developer. CONSTITUTION:A developer supplying opening 42 and a developer collection opening 43 for the developing roller 38 of a developing device main body 40 are formed on the developer cartridge 41. Also, a developer circulation path 44 is formed between the inside of the developer cartridge 41 and the developing device main body 40, and a switching device 45 which opens and closes the supplying opening 42 and the collection opening 43 is provided. In other words, by forming the supplying opening 42 and the collection opening 43 at the developer cartridge 41, the cartridge 41 can be used as the supplying device of the developer and also as the collection device. Furthermore, the supplying and the collection of the developer can be performed by the same developer cartridge 41. In such a way, it is possible to perform the exchange of the developer easily, and also, to improve the automatic collection ratio of the developer.
JP62178467A 1987-07-16 1987-07-16 Copier developing device Expired - Lifetime JP2552869B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP62178467A JP2552869B2 (en) 1987-07-16 1987-07-16 Copier developing device
US07/218,562 US4913087A (en) 1987-07-16 1988-07-13 Developing device of a copier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62178467A JP2552869B2 (en) 1987-07-16 1987-07-16 Copier developing device

Publications (2)

Publication Number Publication Date
JPS6421469A true JPS6421469A (en) 1989-01-24
JP2552869B2 JP2552869B2 (en) 1996-11-13

Family

ID=16049023

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62178467A Expired - Lifetime JP2552869B2 (en) 1987-07-16 1987-07-16 Copier developing device

Country Status (1)

Country Link
JP (1) JP2552869B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6429880A (en) * 1987-07-25 1989-01-31 Sharp Kk Image forming device equipped with developer exchange function
US5822664A (en) * 1994-12-31 1998-10-13 Ricoh Company, Ltd. Developing machine which uses a developing agent including a toner and magnetic particles
US7561836B2 (en) 2006-03-27 2009-07-14 Brother Kogyo Kabushiki Kaisha Processing unit, toner box and image forming apparatus
US7587155B2 (en) 2006-03-27 2009-09-08 Brother Kogyo Kabushiki Kaisha Process cartridge and image forming apparatus
US7639968B2 (en) 2006-03-27 2009-12-29 Brother Kogyo Kabushiki Kaisha Process unit and image forming apparatus
US7647005B2 (en) 2006-03-27 2010-01-12 Brother Kogyo Kabushiki Kaisha Process unit, toner box and image forming apparatus
JP2011095472A (en) * 2009-10-29 2011-05-12 Brother Industries Ltd Developing unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5567768A (en) * 1978-11-16 1980-05-22 Ricoh Co Ltd Developer recovery device in electrophotographic copier
JPS6274252U (en) * 1985-10-28 1987-05-12

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5567768A (en) * 1978-11-16 1980-05-22 Ricoh Co Ltd Developer recovery device in electrophotographic copier
JPS6274252U (en) * 1985-10-28 1987-05-12

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6429880A (en) * 1987-07-25 1989-01-31 Sharp Kk Image forming device equipped with developer exchange function
US5822664A (en) * 1994-12-31 1998-10-13 Ricoh Company, Ltd. Developing machine which uses a developing agent including a toner and magnetic particles
US7561836B2 (en) 2006-03-27 2009-07-14 Brother Kogyo Kabushiki Kaisha Processing unit, toner box and image forming apparatus
US7587155B2 (en) 2006-03-27 2009-09-08 Brother Kogyo Kabushiki Kaisha Process cartridge and image forming apparatus
US7639968B2 (en) 2006-03-27 2009-12-29 Brother Kogyo Kabushiki Kaisha Process unit and image forming apparatus
US7647005B2 (en) 2006-03-27 2010-01-12 Brother Kogyo Kabushiki Kaisha Process unit, toner box and image forming apparatus
JP2011095472A (en) * 2009-10-29 2011-05-12 Brother Industries Ltd Developing unit

Also Published As

Publication number Publication date
JP2552869B2 (en) 1996-11-13

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term