JPS5638057A - Electrophotographic liquid developer - Google Patents
Electrophotographic liquid developerInfo
- Publication number
- JPS5638057A JPS5638057A JP11355979A JP11355979A JPS5638057A JP S5638057 A JPS5638057 A JP S5638057A JP 11355979 A JP11355979 A JP 11355979A JP 11355979 A JP11355979 A JP 11355979A JP S5638057 A JPS5638057 A JP S5638057A
- Authority
- JP
- Japan
- Prior art keywords
- alkyl
- formula
- colorant
- polymerizing
- aliphatic hydrocarbon
- 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.)
- Pending
Links
Landscapes
- Liquid Developers In Electrophotography (AREA)
- Graft Or Block Polymers (AREA)
Abstract
PURPOSE: To enhance adsorption tendency to a colorant, dispersion stability, image fixing and transfer performance, by dispersing into an aliphatic hydrocarbon a toner consisting chiefly of a colorant and a resin obtained by polymerizing a specified vinyl monomer in a solution of a specified crosslinked polymer.
CONSTITUTION: A liquid dispersion of a resin obtained by polymerizing formula II in a solution obtained by dissolving in an aliphatic hydrocarbon a crosslinked polymer represented by formula I is mixed with a colorant, such as carbon black, and when needed, with a polarity controller, and diluted with said solvent to prepare a liquid developer. This developer is superior in fat sensitivity and printing resistance, and used for manufacture of an offset printing plate. In figure I, R1, R3, R4, R5 are each H or CH3; R2, R6 are 6W18C alkyl; n, y are each 10W1,000; m:n=1:99W 50:50; x:y=1:99W50:50. In formula II, R7 is H, CH3, 6W18C alkyl; R8 is COOR9, CONHR10, -OCOR9, or formula III; R9 1W4C alkyl; R10 is H or 1W4C alkyl; and R11 is H, Cl, CH3, NO2, or NH2.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11355979A JPS5638057A (en) | 1979-09-06 | 1979-09-06 | Electrophotographic liquid developer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11355979A JPS5638057A (en) | 1979-09-06 | 1979-09-06 | Electrophotographic liquid developer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5638057A true JPS5638057A (en) | 1981-04-13 |
Family
ID=14615345
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11355979A Pending JPS5638057A (en) | 1979-09-06 | 1979-09-06 | Electrophotographic liquid developer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5638057A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5983174A (en) * | 1982-11-04 | 1984-05-14 | Mitsubishi Paper Mills Ltd | Manufacture of wet developer for electrophotography |
JPS60179751A (en) * | 1984-02-28 | 1985-09-13 | Fuji Photo Film Co Ltd | Liquid developer for electrostatic photography |
US4855207A (en) * | 1987-03-13 | 1989-08-08 | Ricoh Company, Ltd. | Developer for electrophotography |
JPH02271365A (en) * | 1989-04-12 | 1990-11-06 | Fuji Photo Film Co Ltd | Liquid developer for electrostatic photography |
JPH02301771A (en) * | 1989-05-17 | 1990-12-13 | Fuji Photo Film Co Ltd | Liquid developer for electrostatic photography |
US5173446A (en) * | 1988-06-28 | 1992-12-22 | Ricoh Company, Ltd. | Semiconductor substrate manufacturing by recrystallization using a cooling medium |
US5310446A (en) * | 1990-01-10 | 1994-05-10 | Ricoh Company, Ltd. | Method for producing semiconductor film |
US5459346A (en) * | 1988-06-28 | 1995-10-17 | Ricoh Co., Ltd. | Semiconductor substrate with electrical contact in groove |
-
1979
- 1979-09-06 JP JP11355979A patent/JPS5638057A/en active Pending
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5983174A (en) * | 1982-11-04 | 1984-05-14 | Mitsubishi Paper Mills Ltd | Manufacture of wet developer for electrophotography |
JPH0124302B2 (en) * | 1982-11-04 | 1989-05-11 | Mitsubishi Paper Mills Ltd | |
JPS60179751A (en) * | 1984-02-28 | 1985-09-13 | Fuji Photo Film Co Ltd | Liquid developer for electrostatic photography |
JPH0431109B2 (en) * | 1984-02-28 | 1992-05-25 | ||
US4855207A (en) * | 1987-03-13 | 1989-08-08 | Ricoh Company, Ltd. | Developer for electrophotography |
US5173446A (en) * | 1988-06-28 | 1992-12-22 | Ricoh Company, Ltd. | Semiconductor substrate manufacturing by recrystallization using a cooling medium |
US5459346A (en) * | 1988-06-28 | 1995-10-17 | Ricoh Co., Ltd. | Semiconductor substrate with electrical contact in groove |
US5565697A (en) * | 1988-06-28 | 1996-10-15 | Ricoh Company, Ltd. | Semiconductor structure having island forming grooves |
JPH02271365A (en) * | 1989-04-12 | 1990-11-06 | Fuji Photo Film Co Ltd | Liquid developer for electrostatic photography |
JPH02301771A (en) * | 1989-05-17 | 1990-12-13 | Fuji Photo Film Co Ltd | Liquid developer for electrostatic photography |
US5310446A (en) * | 1990-01-10 | 1994-05-10 | Ricoh Company, Ltd. | Method for producing semiconductor film |
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