JPS5699365A - Electrophotographic method - Google Patents
Electrophotographic methodInfo
- Publication number
- JPS5699365A JPS5699365A JP98480A JP98480A JPS5699365A JP S5699365 A JPS5699365 A JP S5699365A JP 98480 A JP98480 A JP 98480A JP 98480 A JP98480 A JP 98480A JP S5699365 A JPS5699365 A JP S5699365A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- insulation
- raw materials
- water
- mho
- 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.)
- Granted
Links
Abstract
PURPOSE: To improve durability such as continuous use characteristics and provide stability to environmental changes such as high temperature and high humidity by using the developer produced by washing the insulation-characteristics magnetic developer itself or the raw materials of the developer.
CONSTITUTION: The developer which is produced by washing the insulation- characteristic magnetic developer itself or polystyrene resin powder, styrene-butadiene coplymer particles, etc. which are the raw materials of the developer by using a large amount of ion exchange water and which is ≤30×10-6mho/cm in specific conductivity of the water in equilibrium of the time when 100pts.wt. the washed developer and raw materials are immersed in 200pts.wt. ion exchange water of ≤0.1×10-6mho/cm specific conductivity at 25°C and is of a 5W9pH range is used. The insulation-characteristic magnetic developer 11 obtained in this way, is held to 30W300μ thickness by a doctor blade 10 on a developer carrier (nonmagnetic cylinder) 4b having a magnet roll 9, whereby an electrostatic image holding surface (photosensitive drum) 1 is developed. The developer 11 has no hygroscopicity as it has been removed of water-soluble components, thereby enabling the image of high resolution free from any photograhic fog to be obtained.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP98480A JPS5699365A (en) | 1980-01-09 | 1980-01-09 | Electrophotographic method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP98480A JPS5699365A (en) | 1980-01-09 | 1980-01-09 | Electrophotographic method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5699365A true JPS5699365A (en) | 1981-08-10 |
JPS6345102B2 JPS6345102B2 (en) | 1988-09-08 |
Family
ID=11488857
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP98480A Granted JPS5699365A (en) | 1980-01-09 | 1980-01-09 | Electrophotographic method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5699365A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02151871A (en) * | 1988-12-05 | 1990-06-11 | Fuji Xerox Co Ltd | Electrophotographic toner |
JPH02236564A (en) * | 1989-03-10 | 1990-09-19 | Fuji Xerox Co Ltd | Electrophotographic toner |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52138933A (en) * | 1976-05-17 | 1977-11-19 | Ricoh Co Ltd | Manufacture of electrophotographic developer |
JPS5443036A (en) * | 1977-09-10 | 1979-04-05 | Canon Inc | Electrostatic image developing device |
-
1980
- 1980-01-09 JP JP98480A patent/JPS5699365A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52138933A (en) * | 1976-05-17 | 1977-11-19 | Ricoh Co Ltd | Manufacture of electrophotographic developer |
JPS5443036A (en) * | 1977-09-10 | 1979-04-05 | Canon Inc | Electrostatic image developing device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02151871A (en) * | 1988-12-05 | 1990-06-11 | Fuji Xerox Co Ltd | Electrophotographic toner |
JPH02236564A (en) * | 1989-03-10 | 1990-09-19 | Fuji Xerox Co Ltd | Electrophotographic toner |
Also Published As
Publication number | Publication date |
---|---|
JPS6345102B2 (en) | 1988-09-08 |
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