JPS55159450A - Static charge developing developer - Google Patents
Static charge developing developerInfo
- Publication number
- JPS55159450A JPS55159450A JP6774879A JP6774879A JPS55159450A JP S55159450 A JPS55159450 A JP S55159450A JP 6774879 A JP6774879 A JP 6774879A JP 6774879 A JP6774879 A JP 6774879A JP S55159450 A JPS55159450 A JP S55159450A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- colloidal silica
- resin
- added
- static charge
- 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
- Developing Agents For Electrophotography (AREA)
Abstract
PURPOSE: To obtain the title developer having superior characteristics in frictional electricity and free from a performance deterioration due to continuously repeated use by usng a toner contg. specified hydrophobic colloidal silica added.
CONSTITUTION: About 0.01W5wt% of silicon dioxide fine particles (colloidal silica) having a trimethylsiloxyl group and pH≥7.5, preferably 8W10 is added to a toner prepared by blending a coloring agent such as carbon black, dye or pigment into a binding resin, and a carrier such as iron dust or ferrite powder is further mixed to obtain a developer. As the binding resin a resin composition contg. about 70wt% or more of polyester resin of pH about 2W5 is preferably used.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6774879A JPS55159450A (en) | 1979-05-31 | 1979-05-31 | Static charge developing developer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6774879A JPS55159450A (en) | 1979-05-31 | 1979-05-31 | Static charge developing developer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55159450A true JPS55159450A (en) | 1980-12-11 |
JPS6239430B2 JPS6239430B2 (en) | 1987-08-22 |
Family
ID=13353868
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6774879A Granted JPS55159450A (en) | 1979-05-31 | 1979-05-31 | Static charge developing developer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55159450A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59100453A (en) * | 1982-11-30 | 1984-06-09 | Mita Ind Co Ltd | Negative-polar color toner |
JPS62258472A (en) * | 1986-05-01 | 1987-11-10 | Sharp Corp | Developer for electrostatic copying machine |
US5439769A (en) * | 1992-12-16 | 1995-08-08 | Seiko Epson Corporation | Developing method and system |
US5766813A (en) * | 1992-12-16 | 1998-06-16 | Seiko Epson Corporation | Developing method and system for transferring toner from a toner carrier member to a latent image carrier |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53133446A (en) * | 1977-04-27 | 1978-11-21 | Canon Inc | Developer for magnetic brush |
-
1979
- 1979-05-31 JP JP6774879A patent/JPS55159450A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53133446A (en) * | 1977-04-27 | 1978-11-21 | Canon Inc | Developer for magnetic brush |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59100453A (en) * | 1982-11-30 | 1984-06-09 | Mita Ind Co Ltd | Negative-polar color toner |
JPS62258472A (en) * | 1986-05-01 | 1987-11-10 | Sharp Corp | Developer for electrostatic copying machine |
US5439769A (en) * | 1992-12-16 | 1995-08-08 | Seiko Epson Corporation | Developing method and system |
US5659858A (en) * | 1992-12-16 | 1997-08-19 | Seiko Epson Corporation | Developing method and system |
US5766813A (en) * | 1992-12-16 | 1998-06-16 | Seiko Epson Corporation | Developing method and system for transferring toner from a toner carrier member to a latent image carrier |
Also Published As
Publication number | Publication date |
---|---|
JPS6239430B2 (en) | 1987-08-22 |
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