JPS5689749A - Developing powder - Google Patents
Developing powderInfo
- Publication number
- JPS5689749A JPS5689749A JP16656779A JP16656779A JPS5689749A JP S5689749 A JPS5689749 A JP S5689749A JP 16656779 A JP16656779 A JP 16656779A JP 16656779 A JP16656779 A JP 16656779A JP S5689749 A JPS5689749 A JP S5689749A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- polymer
- average mol
- meth
- alkyl
- 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 the physical characteristics of a developing powder by using a mixture of styrene-acrylic polymers, as a binding resin for the powder, which are different from each other in average mol. wt. and the glass transition temp. of the contained homopolymer.
CONSTITUTION: A mixture of two kinds of polymers each consisting of (substituted) styrene and alkyl (meth)acrylate is used as a binding resin for a developing powder used in electrophotography, electrostatic recording, magnetic recording or other method. The average mol. wt. of one polymer is made higher than that of the other polymer, and the glass transition temp. of the alkyl (meth)acrylate homopolymer contained in one polymer with a higher average mol. wt. is made lower than that of the alkyl (meth)acrylate homopolymer contained in the other polymer with a lower average mol. wt. Thus, the impact resistance, fluidity, etc. of the powder are enhanced, cohesion occurs hardly, and the powder is fixed at a low temp.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16656779A JPS5689749A (en) | 1979-12-21 | 1979-12-21 | Developing powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16656779A JPS5689749A (en) | 1979-12-21 | 1979-12-21 | Developing powder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5689749A true JPS5689749A (en) | 1981-07-21 |
JPS6332183B2 JPS6332183B2 (en) | 1988-06-28 |
Family
ID=15833652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16656779A Granted JPS5689749A (en) | 1979-12-21 | 1979-12-21 | Developing powder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5689749A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58106552A (en) * | 1981-12-21 | 1983-06-24 | Mita Ind Co Ltd | Heat fixable dry type developing toner |
JPS58202455A (en) * | 1982-05-20 | 1983-11-25 | Konishiroku Photo Ind Co Ltd | Electrostatic image developing toner |
JPS6138952A (en) * | 1984-07-31 | 1986-02-25 | Nippon Carbide Ind Co Ltd | Electrostatic charge image developing toner |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49101031A (en) * | 1973-01-16 | 1974-09-25 | ||
JPS50133242A (en) * | 1974-04-10 | 1975-10-22 | ||
JPS50134652A (en) * | 1974-04-10 | 1975-10-24 | ||
JPS5396839A (en) * | 1977-02-04 | 1978-08-24 | Mitsui Toatsu Chemicals | Resin composition for toner for electrophotography |
JPS6332180A (en) * | 1986-07-24 | 1988-02-10 | Canon Inc | Vacuum pump controlling method |
-
1979
- 1979-12-21 JP JP16656779A patent/JPS5689749A/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49101031A (en) * | 1973-01-16 | 1974-09-25 | ||
JPS50133242A (en) * | 1974-04-10 | 1975-10-22 | ||
JPS50134652A (en) * | 1974-04-10 | 1975-10-24 | ||
JPS5396839A (en) * | 1977-02-04 | 1978-08-24 | Mitsui Toatsu Chemicals | Resin composition for toner for electrophotography |
JPS6332180A (en) * | 1986-07-24 | 1988-02-10 | Canon Inc | Vacuum pump controlling method |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58106552A (en) * | 1981-12-21 | 1983-06-24 | Mita Ind Co Ltd | Heat fixable dry type developing toner |
JPH0350266B2 (en) * | 1981-12-21 | 1991-08-01 | Mita Industrial Co Ltd | |
JPS58202455A (en) * | 1982-05-20 | 1983-11-25 | Konishiroku Photo Ind Co Ltd | Electrostatic image developing toner |
JPH0237586B2 (en) * | 1982-05-20 | 1990-08-24 | Konika Kk | |
JPS6138952A (en) * | 1984-07-31 | 1986-02-25 | Nippon Carbide Ind Co Ltd | Electrostatic charge image developing toner |
JPH0448228B2 (en) * | 1984-07-31 | 1992-08-06 | Nippon Carbide Kogyo Kk |
Also Published As
Publication number | Publication date |
---|---|
JPS6332183B2 (en) | 1988-06-28 |
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