JPS55121461A - Magnetic brush developing device - Google Patents
Magnetic brush developing deviceInfo
- Publication number
- JPS55121461A JPS55121461A JP3082879A JP3082879A JPS55121461A JP S55121461 A JPS55121461 A JP S55121461A JP 3082879 A JP3082879 A JP 3082879A JP 3082879 A JP3082879 A JP 3082879A JP S55121461 A JPS55121461 A JP S55121461A
- Authority
- JP
- Japan
- Prior art keywords
- developing sleeve
- magnetic brush
- photosensitive drum
- developed
- 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.)
- Pending
Links
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
Abstract
PURPOSE: To prevent the deterioration of toner images even at the high-speed development by disposing two developing means.
CONSTITUTION: The 1st developing sleeve 11 connected to a bias voltage source 13 for inhibiting development and the 2nd developing sleeve 12 connected to a bias voltage source 14 for preventing the occurrence of development fogs are disposed in opposition to a photosensitive drum 10 within a developing tank 15. As a result of this, the electrostatic latent images carried on the photosensitive drum 10 opposes to the 1st developing sleeve 11 along with the rotation driving of the photosensitive drum 10 and are preliminarily developed by the 1st magnetic brush formed, thence they oppose to the 2nd developing sleeve 12 and are developed to the required image density by the 2nd magnetic brush formed. Hence, even at the high-speed development, the degradation in the image quality of the developed toner images is prevented.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3082879A JPS55121461A (en) | 1979-03-15 | 1979-03-15 | Magnetic brush developing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3082879A JPS55121461A (en) | 1979-03-15 | 1979-03-15 | Magnetic brush developing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55121461A true JPS55121461A (en) | 1980-09-18 |
Family
ID=12314556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3082879A Pending JPS55121461A (en) | 1979-03-15 | 1979-03-15 | Magnetic brush developing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55121461A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57157964U (en) * | 1981-03-30 | 1982-10-04 |
-
1979
- 1979-03-15 JP JP3082879A patent/JPS55121461A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57157964U (en) * | 1981-03-30 | 1982-10-04 | ||
JPH0112272Y2 (en) * | 1981-03-30 | 1989-04-11 |
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