JPS5496047A - Dry type electrophotographic copier - Google Patents
Dry type electrophotographic copierInfo
- Publication number
- JPS5496047A JPS5496047A JP15382077A JP15382077A JPS5496047A JP S5496047 A JPS5496047 A JP S5496047A JP 15382077 A JP15382077 A JP 15382077A JP 15382077 A JP15382077 A JP 15382077A JP S5496047 A JPS5496047 A JP S5496047A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- toner concentration
- concentration
- maintaining device
- developer
- 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
Abstract
PURPOSE:To prevent the occurrence of toner shortage and uneven concentrations by letting a toner concentration maintaining device of two component developer actuate continually at the ending of copying when the toner concentration is insufficient and let the same stand by when the toner concentration has reached a specified value. CONSTITUTION:With the toner concentration maintaining device being put in a developing tank 1, the developer is stirred by its stirring screw and the toner concentration of the developer 4 circulating along the surface of a magnetic roll 2 and scraping-off plate 3 is detected with a toner sensor 5. When the toner concentration is insufficient, the toner in a toner tank 6 is replenished into the developing tank 1 by the toner replenisher which actuates according to the output of the toner sensor 5. This toner concentration maintaining device is actuated not only at the copying operation but at the standby as well until the toner concentration reaches the specified value. Namely, if toner replenishing is accomplished at intervals of a time shorter than the specified time at the ending of copying operation, the toner sensor and toner replenishing part are actuated continually unitl the specified time is reached.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15382077A JPS5496047A (en) | 1977-12-21 | 1977-12-21 | Dry type electrophotographic copier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15382077A JPS5496047A (en) | 1977-12-21 | 1977-12-21 | Dry type electrophotographic copier |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5496047A true JPS5496047A (en) | 1979-07-30 |
JPS6356544B2 JPS6356544B2 (en) | 1988-11-08 |
Family
ID=15570797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15382077A Granted JPS5496047A (en) | 1977-12-21 | 1977-12-21 | Dry type electrophotographic copier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5496047A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56104358A (en) * | 1980-01-22 | 1981-08-20 | Matsushita Electric Ind Co Ltd | Electrophotographic copier |
JPS56128656U (en) * | 1980-03-03 | 1981-09-30 | ||
JPS58130366A (en) * | 1982-01-29 | 1983-08-03 | Canon Inc | Developing device |
JPS60263974A (en) * | 1984-06-13 | 1985-12-27 | Hitachi Ltd | Toner supply controller |
JPS62136676A (en) * | 1985-12-11 | 1987-06-19 | Canon Inc | Recording device |
JPS62136677A (en) * | 1985-12-11 | 1987-06-19 | Canon Inc | Image recording device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5260629A (en) * | 1975-11-14 | 1977-05-19 | Fuji Xerox Co Ltd | Method of replenishing toner for electronic copying machine |
-
1977
- 1977-12-21 JP JP15382077A patent/JPS5496047A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5260629A (en) * | 1975-11-14 | 1977-05-19 | Fuji Xerox Co Ltd | Method of replenishing toner for electronic copying machine |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56104358A (en) * | 1980-01-22 | 1981-08-20 | Matsushita Electric Ind Co Ltd | Electrophotographic copier |
JPS6318747B2 (en) * | 1980-01-22 | 1988-04-20 | Matsushita Electric Ind Co Ltd | |
JPS56128656U (en) * | 1980-03-03 | 1981-09-30 | ||
JPS6312353Y2 (en) * | 1980-03-03 | 1988-04-08 | ||
JPS58130366A (en) * | 1982-01-29 | 1983-08-03 | Canon Inc | Developing device |
JPH0415950B2 (en) * | 1982-01-29 | 1992-03-19 | Canon Kk | |
JPS60263974A (en) * | 1984-06-13 | 1985-12-27 | Hitachi Ltd | Toner supply controller |
JPS62136676A (en) * | 1985-12-11 | 1987-06-19 | Canon Inc | Recording device |
JPS62136677A (en) * | 1985-12-11 | 1987-06-19 | Canon Inc | Image recording device |
Also Published As
Publication number | Publication date |
---|---|
JPS6356544B2 (en) | 1988-11-08 |
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