JPS5526529A - Magnetic brush developing device - Google Patents
Magnetic brush developing deviceInfo
- Publication number
- JPS5526529A JPS5526529A JP9934978A JP9934978A JPS5526529A JP S5526529 A JPS5526529 A JP S5526529A JP 9934978 A JP9934978 A JP 9934978A JP 9934978 A JP9934978 A JP 9934978A JP S5526529 A JPS5526529 A JP S5526529A
- Authority
- JP
- Japan
- Prior art keywords
- axial length
- photosensitive material
- sleeve
- permanent magnet
- drum
- 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 make conduction constant and eliminate the occurrence of uneven development by making the axial length of the permanent magnet to be mounted in an insulation sleeve shorter than the axial length or a circular cylindrical drum and longer than the axial length of photosensitive material.
CONSTITUTION: Photosensitive material 2 is coated to a conductive circular cylindrical drum 1 by the width of l1. A plastic-made sleeve 4 is built in with a permanent magnet 5 to convey magnetic toner 7 to the drum 1 and rub the electrostatic latent images formed on the photosensitive material 2. The axial length l2 of the circular cylindrical permanent magnet 5, the axial length l3 of the sleeve 4 and the axial length of the photosensitive material 2 are made l1<l2≤l3. Since the sleeve 4 is non-conductive, the production of flaws by the magnetic toner is obviated and corrosion by air and moisture does not occur. In addition, conduction is accomplished directly to the drum substrate, not by the formation of a conductive path by shaft and frame and therefore there are no troubles and since the conduction constant is maintained constant, there is not occurrence of uneven development or the like.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9934978A JPS5526529A (en) | 1978-08-15 | 1978-08-15 | Magnetic brush developing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9934978A JPS5526529A (en) | 1978-08-15 | 1978-08-15 | Magnetic brush developing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5526529A true JPS5526529A (en) | 1980-02-26 |
Family
ID=14245127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9934978A Pending JPS5526529A (en) | 1978-08-15 | 1978-08-15 | Magnetic brush developing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5526529A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61220146A (en) * | 1985-03-26 | 1986-09-30 | Aiwa Co Ltd | Optical pickup device |
JPS6257135A (en) * | 1985-09-05 | 1987-03-12 | Pioneer Electronic Corp | Pickup device in optical information recording and reproducing device |
JPS6478441A (en) * | 1987-09-18 | 1989-03-23 | Sanyo Electric Co | Optical pickup device |
CN102073249A (en) * | 2011-01-21 | 2011-05-25 | 珠海天威飞马打印耗材有限公司 | Magnetic roller and processing box |
-
1978
- 1978-08-15 JP JP9934978A patent/JPS5526529A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61220146A (en) * | 1985-03-26 | 1986-09-30 | Aiwa Co Ltd | Optical pickup device |
JPS6257135A (en) * | 1985-09-05 | 1987-03-12 | Pioneer Electronic Corp | Pickup device in optical information recording and reproducing device |
JPS6478441A (en) * | 1987-09-18 | 1989-03-23 | Sanyo Electric Co | Optical pickup device |
CN102073249A (en) * | 2011-01-21 | 2011-05-25 | 珠海天威飞马打印耗材有限公司 | Magnetic roller and processing box |
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