JPS566268A - Corona discharge device of electrophotographic copying machine - Google Patents
Corona discharge device of electrophotographic copying machineInfo
- Publication number
- JPS566268A JPS566268A JP8176679A JP8176679A JPS566268A JP S566268 A JPS566268 A JP S566268A JP 8176679 A JP8176679 A JP 8176679A JP 8176679 A JP8176679 A JP 8176679A JP S566268 A JPS566268 A JP S566268A
- Authority
- JP
- Japan
- Prior art keywords
- photosensitive drum
- shield plate
- potential
- central part
- drum surface
- 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
Abstract
PURPOSE: To make the charge distribution on a photosensitive drum surface even, remove uneven electric potentials and achieve beautiful copying by forming the end edge of a shield plate opposing to a photoreceptor in arc form.
CONSTITUTION: A photosensitive drum 1 is rotated in the direction of an arrow and the photosensitive drum 1 is charged by the corona discharge generated by a discharge member 2. The central part of the photosensitive drum 1 becomes higher in electric potential than at the end part. Thereupon, the end 4 of the shield plate 3 opposing to the photosensitive drum 1 is formed in such arc form which is close to the photosensitive drum surface at the center and leaves from the photosensitive drum at both ends so that the photosensitive drum surface assumes an even charge distribution. As a result of this, the width W on the photosensitive drum surface charged by the discharge member 2 is relatively narrow in the central section of the shield plate but said charge width W' becomes much wider in the section at both ends of the shield plate 3, thus the two ends of the photosensitive drum 1 become higher in charge quantity than the central part and the electric potential at the end parts and the potential in the central part become even in terms of potential.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8176679A JPS566268A (en) | 1979-06-28 | 1979-06-28 | Corona discharge device of electrophotographic copying machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8176679A JPS566268A (en) | 1979-06-28 | 1979-06-28 | Corona discharge device of electrophotographic copying machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS566268A true JPS566268A (en) | 1981-01-22 |
Family
ID=13755573
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8176679A Pending JPS566268A (en) | 1979-06-28 | 1979-06-28 | Corona discharge device of electrophotographic copying machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS566268A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55111781A (en) * | 1979-11-08 | 1980-08-28 | Fuji Kanzume Kk | Separation of granule of citrus fruit to individual segment |
-
1979
- 1979-06-28 JP JP8176679A patent/JPS566268A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55111781A (en) * | 1979-11-08 | 1980-08-28 | Fuji Kanzume Kk | Separation of granule of citrus fruit to individual segment |
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