JPS6421469A - Developing device for copying machine - Google Patents
Developing device for copying machineInfo
- 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
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.
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)
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)
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 |
-
1987
- 1987-07-16 JP JP62178467A patent/JP2552869B2/en not_active Expired - Lifetime
Patent Citations (2)
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)
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 |