JPS5538524A - Toner composition for electrophotography - Google Patents
Toner composition for electrophotographyInfo
- Publication number
- JPS5538524A JPS5538524A JP11126778A JP11126778A JPS5538524A JP S5538524 A JPS5538524 A JP S5538524A JP 11126778 A JP11126778 A JP 11126778A JP 11126778 A JP11126778 A JP 11126778A JP S5538524 A JPS5538524 A JP S5538524A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- toner
- 60pts
- acid value
- copying
- 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 improve the durability of developer and obtain rhe copied matter of high densities free from any fog in the background by using the toner comprising containing polyester of acid value within a range of 3W13 at more than 60pts.wt in 75W99pts.wt of the total binder resin.
CONSTITUTION: The toner containing more than 60pts.wt of polyester of acid value 3W13, preferably 5W10, softening point 55W160°C, mean molecular weight 1000W100000 together with less than 35pts.wt of other binder, 1W15 pts. wt of coloring agents and other assistants is produced. Carrier particles are used at 10W 100 times weight the toner in producing the developer. In this way, required charging quantity is reached rapidly and the performances close to those at the manufacture are maintained even after the developer has been left standing for a long time while the copying mahcine is not in use for a long period of time, thus the good quality images which do not cause degradation in image density despite multiple copying of more than 10,000 sheets may be obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11126778A JPS5538524A (en) | 1978-09-12 | 1978-09-12 | Toner composition for electrophotography |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11126778A JPS5538524A (en) | 1978-09-12 | 1978-09-12 | Toner composition for electrophotography |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5538524A true JPS5538524A (en) | 1980-03-18 |
JPH0468628B2 JPH0468628B2 (en) | 1992-11-02 |
Family
ID=14556863
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11126778A Granted JPS5538524A (en) | 1978-09-12 | 1978-09-12 | Toner composition for electrophotography |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5538524A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57130050A (en) * | 1980-12-24 | 1982-08-12 | Xerox Corp | Developer composition and image formation |
JPS61284771A (en) * | 1985-06-10 | 1986-12-15 | Canon Inc | Image forming method |
JPS6368853A (en) * | 1986-09-10 | 1988-03-28 | Kao Corp | Electrophotographic developer composition |
JPS6368852A (en) * | 1986-09-10 | 1988-03-28 | Kao Corp | Electrophotographic developer composition |
JPS6368854A (en) * | 1986-09-10 | 1988-03-28 | Kao Corp | Electrophotographic developer composition |
JPH0363065B2 (en) * | 1986-09-10 | 1991-09-27 | Kao Corp | |
US7435519B2 (en) | 2004-01-27 | 2008-10-14 | Ricoh Printing Systems, Ltd. | Electrophotographic toner and image forming apparatus |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53103744A (en) * | 1977-02-23 | 1978-09-09 | Hitachi Metals Ltd | Magnetic toner composite |
JPS5486342A (en) * | 1977-12-21 | 1979-07-09 | Hitachi Chemical Co Ltd | Toner for static charge picture development |
-
1978
- 1978-09-12 JP JP11126778A patent/JPS5538524A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53103744A (en) * | 1977-02-23 | 1978-09-09 | Hitachi Metals Ltd | Magnetic toner composite |
JPS5486342A (en) * | 1977-12-21 | 1979-07-09 | Hitachi Chemical Co Ltd | Toner for static charge picture development |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57130050A (en) * | 1980-12-24 | 1982-08-12 | Xerox Corp | Developer composition and image formation |
JPH0358108B2 (en) * | 1980-12-24 | 1991-09-04 | Xerox Corp | |
JPS61284771A (en) * | 1985-06-10 | 1986-12-15 | Canon Inc | Image forming method |
JPH0567032B2 (en) * | 1985-06-10 | 1993-09-24 | Canon Kk | |
JPS6368853A (en) * | 1986-09-10 | 1988-03-28 | Kao Corp | Electrophotographic developer composition |
JPS6368852A (en) * | 1986-09-10 | 1988-03-28 | Kao Corp | Electrophotographic developer composition |
JPS6368854A (en) * | 1986-09-10 | 1988-03-28 | Kao Corp | Electrophotographic developer composition |
JPH0363068B2 (en) * | 1986-09-10 | 1991-09-27 | Kao Corp | |
JPH0363065B2 (en) * | 1986-09-10 | 1991-09-27 | Kao Corp | |
JPH0363069B2 (en) * | 1986-09-10 | 1991-09-27 | Kao Corp | |
JPH0363067B2 (en) * | 1986-09-10 | 1991-09-27 | Kao Corp | |
US7435519B2 (en) | 2004-01-27 | 2008-10-14 | Ricoh Printing Systems, Ltd. | Electrophotographic toner and image forming apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPH0468628B2 (en) | 1992-11-02 |
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