JPS5484727A - Developing method in electrophotography - Google Patents
Developing method in electrophotographyInfo
- Publication number
- JPS5484727A JPS5484727A JP15257777A JP15257777A JPS5484727A JP S5484727 A JPS5484727 A JP S5484727A JP 15257777 A JP15257777 A JP 15257777A JP 15257777 A JP15257777 A JP 15257777A JP S5484727 A JPS5484727 A JP S5484727A
- Authority
- JP
- Japan
- Prior art keywords
- photoreceptor
- constant current
- roller
- developer
- flowed
- 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
- Developing For Electrophotography (AREA)
- Magnetic Brush Developing In Electrophotography (AREA)
Abstract
PURPOSE: To form developed images of an even density despite variations in the surface potential of photoreceptor by flowing a constant current to a developer feed members in the bias developing of a dry type magnetic brush developing method of electrophotographic copying.
CONSTITUTION: Grounded earth rollers 7, 8 are contacted to the substrate 5 on the upper back of a photoreceptor 4 which is formed of a photoconductor layer 6 and the conductive substrate 5 and is run leftward. A permanent magnet 9 is disposed between the rollers 7, 8. A developing roller 12 composed of conductive magnetic material which carries and rotates developer 14 is disposed in the lower part of the lower photoconductor layer 6 of the photoreceptor 6. A magnetical closed loop is formed between this roller and the permanent magnet 9 and further a constant current is flowed to the developer 4 between the roller 12 and the photoreceptor 5. Namely, with the constant current circuit as the one shown in the figure being used, its terminal 20 is connected to the roller 12 and terminal 21 is grounded, than a constant current is flowed to the developer even if the potential of the electrostatic latent images on the photoreceptor 5 changes thereby making its bristling constant and evening the developed image density.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15257777A JPS5484727A (en) | 1977-12-19 | 1977-12-19 | Developing method in electrophotography |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15257777A JPS5484727A (en) | 1977-12-19 | 1977-12-19 | Developing method in electrophotography |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5484727A true JPS5484727A (en) | 1979-07-05 |
Family
ID=15543504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15257777A Pending JPS5484727A (en) | 1977-12-19 | 1977-12-19 | Developing method in electrophotography |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5484727A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS597973A (en) * | 1982-06-28 | 1984-01-17 | ゼロツクス・コ−ポレ−シヨン | Developer for electrophotographic copying machine |
JPS6132076A (en) * | 1984-07-24 | 1986-02-14 | Mita Ind Co Ltd | Developing device for ferrite compound developer |
-
1977
- 1977-12-19 JP JP15257777A patent/JPS5484727A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS597973A (en) * | 1982-06-28 | 1984-01-17 | ゼロツクス・コ−ポレ−シヨン | Developer for electrophotographic copying machine |
JPS6132076A (en) * | 1984-07-24 | 1986-02-14 | Mita Ind Co Ltd | Developing device for ferrite compound developer |
JPH0585907B2 (en) * | 1984-07-24 | 1993-12-09 | Mita Industrial Co Ltd |
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