JPS6415771A - Developing device - Google Patents
Developing deviceInfo
- 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
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.
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)
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)
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 |
-
1987
- 1987-07-09 JP JP62173189A patent/JP2573232B2/en not_active Expired - Fee Related
Patent Citations (2)
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)
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 |