JPS5662258A - Electrophotographic method - Google Patents
Electrophotographic methodInfo
- Publication number
- JPS5662258A JPS5662258A JP13892779A JP13892779A JPS5662258A JP S5662258 A JPS5662258 A JP S5662258A JP 13892779 A JP13892779 A JP 13892779A JP 13892779 A JP13892779 A JP 13892779A JP S5662258 A JPS5662258 A JP S5662258A
- Authority
- JP
- Japan
- Prior art keywords
- whitening
- minute recesses
- edge
- photoreceptor
- deterioration
- 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)
- Developing For Electrophotography (AREA)
Abstract
PURPOSE: To obtain a superior transferred image free of middle or edge whitening using a high resistance magnetic toner of one component type, by forming minute recesses not less than a specified depth made of a conductive material on the surface of a developing sleeve.
CONSTITUTION: In a transfer type electrophotographic process using magnetic toner T of high resistivity ≥1013Ωcm, minute recesses of depth ≥30μm are formed on the surface of developing sleeve 10 of developing device 4 by a sandblasting method or by firmly fixing an aluminum or iron powder with a conductive adhesive or heat fixing it. Thus, permitting a strong electric field to be formed between photoreceptor 1 and opposite sleeve 10, therefore, middle whitening that the middle part of an image is not developed, and edge whitening that the edge part is not developed to be prevented, and further, deterioration of cleaning performance, deterioration of durability of cleaning member 6, or other problems occurring in the case of forming minute recesses on the surface of photoreceptor 1 to be prevented.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13892779A JPS5662258A (en) | 1979-10-26 | 1979-10-26 | Electrophotographic method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13892779A JPS5662258A (en) | 1979-10-26 | 1979-10-26 | Electrophotographic method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5662258A true JPS5662258A (en) | 1981-05-28 |
Family
ID=15233382
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13892779A Pending JPS5662258A (en) | 1979-10-26 | 1979-10-26 | Electrophotographic method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5662258A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5895370A (en) * | 1981-12-01 | 1983-06-06 | Sharp Corp | Developing device |
-
1979
- 1979-10-26 JP JP13892779A patent/JPS5662258A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5895370A (en) * | 1981-12-01 | 1983-06-06 | Sharp Corp | Developing device |
JPH0434748B2 (en) * | 1981-12-01 | 1992-06-08 | Sharp Kk |
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