JPS5535320A - Member for electrostatic charged image developing - Google Patents
Member for electrostatic charged image developingInfo
- Publication number
- JPS5535320A JPS5535320A JP10747578A JP10747578A JPS5535320A JP S5535320 A JPS5535320 A JP S5535320A JP 10747578 A JP10747578 A JP 10747578A JP 10747578 A JP10747578 A JP 10747578A JP S5535320 A JPS5535320 A JP S5535320A
- Authority
- JP
- Japan
- Prior art keywords
- images
- grooves
- materials
- roller
- surface tensions
- 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
Landscapes
- Wet Developing In Electrophotography (AREA)
Abstract
PURPOSE: To improve gradation characteristic of the images comprising water developing electrostatic charged images by covering fine wires of materials of different surface tensions to a metal roller having fine grooves, at a certain angle to these grooves.
CONSTITUTION: If a developing roller which is made of metal of surface tension γ1 and has grooves 1 is covered by fine wires 2, 2' with two kinds of materials having surface tensions γ2, γ3 smaller than γ1 (only one kind may be used) at the angle differing from that of the grooves of the roller, then water-base developer (e.g., aqueous dye solution) creeps up to all the lines where the static electricity of electrostatic charge images is strong, thus assuming dense images. Where that is weak, only the portions of the wires 1 where the surface tension is higher are developed and therefore the electrostatic charge images are developed with good gradation characteristic. Teflon, polyethylene, polystyrene, polyvinyl alcohol, polymethyl methacrylate, polyhexafluoropropylene, etc. may be enumerated as typical examples of the abovementioned materials of different surface tensions.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10747578A JPS5535320A (en) | 1978-09-04 | 1978-09-04 | Member for electrostatic charged image developing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10747578A JPS5535320A (en) | 1978-09-04 | 1978-09-04 | Member for electrostatic charged image developing |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5535320A true JPS5535320A (en) | 1980-03-12 |
JPS6261153B2 JPS6261153B2 (en) | 1987-12-19 |
Family
ID=14460138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10747578A Granted JPS5535320A (en) | 1978-09-04 | 1978-09-04 | Member for electrostatic charged image developing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5535320A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55143565A (en) * | 1979-04-16 | 1980-11-08 | Hunt Chem Corp Philip A | Method* device* and composition for liquid development of electrostatic image |
-
1978
- 1978-09-04 JP JP10747578A patent/JPS5535320A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55143565A (en) * | 1979-04-16 | 1980-11-08 | Hunt Chem Corp Philip A | Method* device* and composition for liquid development of electrostatic image |
Also Published As
Publication number | Publication date |
---|---|
JPS6261153B2 (en) | 1987-12-19 |
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