JPS556371A - Magnetic brush developing device - Google Patents
Magnetic brush developing deviceInfo
- Publication number
- JPS556371A JPS556371A JP7910778A JP7910778A JPS556371A JP S556371 A JPS556371 A JP S556371A JP 7910778 A JP7910778 A JP 7910778A JP 7910778 A JP7910778 A JP 7910778A JP S556371 A JPS556371 A JP S556371A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- replenishing
- hopper
- permanent magnet
- magnet roll
- 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
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
PURPOSE:To replenish the toner stably by providing a replenishing permanent magnet roll in the toner hopper aside from a developing permanent magnet roll, detecting the toner volume on the non-magnetic sleeve and rotating the replenishing magnet roll through the utilization of the detection signal thereof. CONSTITUTION:A toner-replenishing permanent magnet roll 8 having a shaft 7 is rotatably provided above a developing permanent magnet roll 4 provided in the lower part of a large-size hopper 11 besides this roll. A cartridge type toner box 21 which is made large in size and removalbe is mounted to the hopper 11. A spring plate 23 is provided to the opening part 22 of the bottom part of the toner box 21 and is pushed up and opened by the member 11c of the drum side 11b when mounted to the hopper 11. When the volume of the toner stagnating on the surface of the developing sleeve 5 decreases, the member 10 moves to the position of the solid line. This moving state is detected witn, e.g., a microswitch or the like, whereby the toner-replenishing roll 8 is controlled of driving and the toner 2 replenished.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7910778A JPS556371A (en) | 1978-06-29 | 1978-06-29 | Magnetic brush developing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7910778A JPS556371A (en) | 1978-06-29 | 1978-06-29 | Magnetic brush developing device |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56109674A Division JPS5756869A (en) | 1981-07-14 | 1981-07-14 | Magnetic brush development device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS556371A true JPS556371A (en) | 1980-01-17 |
JPS5654637B2 JPS5654637B2 (en) | 1981-12-26 |
Family
ID=13680666
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7910778A Granted JPS556371A (en) | 1978-06-29 | 1978-06-29 | Magnetic brush developing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS556371A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56113346U (en) * | 1980-01-31 | 1981-09-01 | ||
JPS5745573A (en) * | 1980-09-01 | 1982-03-15 | Hitachi Metals Ltd | Development device for magnetic toner |
JPS58108552A (en) * | 1981-12-22 | 1983-06-28 | Canon Inc | Process kit and its attaching and detaching means |
JPS58108553A (en) * | 1981-12-22 | 1983-06-28 | Canon Inc | Process kit |
JPS58168067A (en) * | 1982-03-29 | 1983-10-04 | Canon Inc | Developing device |
JPS6175372A (en) * | 1984-09-20 | 1986-04-17 | Minolta Camera Co Ltd | Magnetic brush developing device |
JPS62187370A (en) * | 1986-02-13 | 1987-08-15 | Katsuragawa Denki Kk | Electrophotographic device |
JPS6383760A (en) * | 1986-09-29 | 1988-04-14 | Matsushita Electric Ind Co Ltd | Detector for remaining amount of developer |
JPS6383761A (en) * | 1986-09-29 | 1988-04-14 | Matsushita Electric Ind Co Ltd | Developing device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4963963U (en) * | 1972-09-13 | 1974-06-05 | ||
JPS5056948A (en) * | 1973-09-17 | 1975-05-19 | ||
JPS5074347U (en) * | 1973-11-05 | 1975-06-28 | ||
JPS5215798U (en) * | 1975-07-23 | 1977-02-03 | ||
JPS5299832A (en) * | 1976-02-16 | 1977-08-22 | Olivetti & Co Spa | Disposable toner cartridge for copying machine |
-
1978
- 1978-06-29 JP JP7910778A patent/JPS556371A/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4963963U (en) * | 1972-09-13 | 1974-06-05 | ||
JPS5056948A (en) * | 1973-09-17 | 1975-05-19 | ||
JPS5074347U (en) * | 1973-11-05 | 1975-06-28 | ||
JPS5215798U (en) * | 1975-07-23 | 1977-02-03 | ||
JPS5299832A (en) * | 1976-02-16 | 1977-08-22 | Olivetti & Co Spa | Disposable toner cartridge for copying machine |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56113346U (en) * | 1980-01-31 | 1981-09-01 | ||
JPS5745573A (en) * | 1980-09-01 | 1982-03-15 | Hitachi Metals Ltd | Development device for magnetic toner |
JPS6118181B2 (en) * | 1981-12-22 | 1986-05-10 | Canon Kk | |
JPS58108553A (en) * | 1981-12-22 | 1983-06-28 | Canon Inc | Process kit |
JPS58108552A (en) * | 1981-12-22 | 1983-06-28 | Canon Inc | Process kit and its attaching and detaching means |
JPS6118182B2 (en) * | 1981-12-22 | 1986-05-10 | Canon Kk | |
JPS58168067A (en) * | 1982-03-29 | 1983-10-04 | Canon Inc | Developing device |
JPH0415951B2 (en) * | 1982-03-29 | 1992-03-19 | Canon Kk | |
JPS6175372A (en) * | 1984-09-20 | 1986-04-17 | Minolta Camera Co Ltd | Magnetic brush developing device |
JPS62187370A (en) * | 1986-02-13 | 1987-08-15 | Katsuragawa Denki Kk | Electrophotographic device |
JPS6383760A (en) * | 1986-09-29 | 1988-04-14 | Matsushita Electric Ind Co Ltd | Detector for remaining amount of developer |
JPS6383761A (en) * | 1986-09-29 | 1988-04-14 | Matsushita Electric Ind Co Ltd | Developing device |
JPH0520751B2 (en) * | 1986-09-29 | 1993-03-22 | Matsushita Electric Ind Co Ltd | |
JPH0520752B2 (en) * | 1986-09-29 | 1993-03-22 | Matsushita Electric Ind Co Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS5654637B2 (en) | 1981-12-26 |
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