JPS5528082A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPS5528082A JPS5528082A JP10201278A JP10201278A JPS5528082A JP S5528082 A JPS5528082 A JP S5528082A JP 10201278 A JP10201278 A JP 10201278A JP 10201278 A JP10201278 A JP 10201278A JP S5528082 A JPS5528082 A JP S5528082A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- residual amount
- consumption
- transfer paper
- highest
- 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.)
- Pending
Links
Landscapes
- Dry Development In Electrophotography (AREA)
Abstract
PURPOSE:To accurately detect the residual amount of developer despite uneven consumption of the developer by installing detecting elements in the portions where the rate of developer consumption is highest and detecting the residual amount of the developer of a feed vessel. CONSTITUTION:The developer is supplied from the central part in the width direction of the feed opening 5a of a developer feed hopper 5 irrespective of transfer paper sizes and this central part is the portion where the rate of consumption of the developer is highest. Hence, if the photoelectric unit 11 formed light emitting element, photo detector 10, 11, etc. is installed in the transparent small chambers 7, 8 provided in the central portions and the residual amount of the one-component type developer in the hopper 5 is detected, the accurate residual amount of the developer is detected irrespective of the sizes of the transfer paper. As a result, the replenishment of the developer is correctly controlled and the occurrence of uneven image densities in the width direction of the transfer paper prevented.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10201278A JPS5528082A (en) | 1978-08-22 | 1978-08-22 | Developing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10201278A JPS5528082A (en) | 1978-08-22 | 1978-08-22 | Developing device |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18462280A Division JPS56107272A (en) | 1980-12-25 | 1980-12-25 | Developing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5528082A true JPS5528082A (en) | 1980-02-28 |
Family
ID=14315841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10201278A Pending JPS5528082A (en) | 1978-08-22 | 1978-08-22 | Developing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5528082A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56107272A (en) * | 1980-12-25 | 1981-08-26 | Ricoh Co Ltd | Developing device |
EP0613064A2 (en) * | 1993-02-25 | 1994-08-31 | Sharp Kabushiki Kaisha | Developer device |
-
1978
- 1978-08-22 JP JP10201278A patent/JPS5528082A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56107272A (en) * | 1980-12-25 | 1981-08-26 | Ricoh Co Ltd | Developing device |
EP0613064A2 (en) * | 1993-02-25 | 1994-08-31 | Sharp Kabushiki Kaisha | Developer device |
EP0613064A3 (en) * | 1993-02-25 | 1996-02-21 | Sharp Kk | Developer device. |
US5548385A (en) * | 1993-02-25 | 1996-08-20 | Sharp Kabushiki Kaisha | Developer device that gradually replaces degraded developer with fresh developer |
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