JPS5680055A - Manufacture of coloring agent for electrostatic photographic toner - Google Patents

Manufacture of coloring agent for electrostatic photographic toner

Info

Publication number
JPS5680055A
JPS5680055A JP15780779A JP15780779A JPS5680055A JP S5680055 A JPS5680055 A JP S5680055A JP 15780779 A JP15780779 A JP 15780779A JP 15780779 A JP15780779 A JP 15780779A JP S5680055 A JPS5680055 A JP S5680055A
Authority
JP
Japan
Prior art keywords
toner
manufacture
coloring agent
unsatd
acrylate
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
Application number
JP15780779A
Other languages
Japanese (ja)
Other versions
JPS6350699B2 (en
Inventor
Kazuo Tsubushi
Junichiro Hashimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP15780779A priority Critical patent/JPS5680055A/en
Publication of JPS5680055A publication Critical patent/JPS5680055A/en
Publication of JPS6350699B2 publication Critical patent/JPS6350699B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE: To obtain a clear image of high density by using a copolymer of a specified (meth)acrylate and a monomer such as unsatd. carboxylic acid (anhydride) or glycidyl (meth)acrylate as resin for a coloring agent for a flashing method toner.
CONSTITUTION: A soln. of a copolymer of monomer A represented by the formula (where R is H or CH3 and n is 1W4) and one or more kinds of monomers B selected from unsatd. carboxylic acid, unsatd. carboxylic anhydride, glycidyl methacrylate and glycidyl acrylate in an org. solvent such as toluene is kneaded with a hydrated cake of carbon black and org. pigment. The kneaded material is then freed of the water and solvent in succession, and the resulting lumps are pulverized to manufacture a coloring agent. This agent is kneaded with a binder and pulverized to manufacture a toner. The pigment particles of the toner are not exposed to the sur face, and the toner is not made too fine. Thus, a favorable image is obtd.
COPYRIGHT: (C)1981,JPO&Japio
JP15780779A 1979-12-04 1979-12-04 Manufacture of coloring agent for electrostatic photographic toner Granted JPS5680055A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15780779A JPS5680055A (en) 1979-12-04 1979-12-04 Manufacture of coloring agent for electrostatic photographic toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15780779A JPS5680055A (en) 1979-12-04 1979-12-04 Manufacture of coloring agent for electrostatic photographic toner

Publications (2)

Publication Number Publication Date
JPS5680055A true JPS5680055A (en) 1981-07-01
JPS6350699B2 JPS6350699B2 (en) 1988-10-11

Family

ID=15657709

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15780779A Granted JPS5680055A (en) 1979-12-04 1979-12-04 Manufacture of coloring agent for electrostatic photographic toner

Country Status (1)

Country Link
JP (1) JPS5680055A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5187043A (en) * 1975-01-29 1976-07-30 Kopia Kk
JPS545435A (en) * 1977-06-15 1979-01-16 Ricoh Co Ltd Developer for electropotography
JPS5423539A (en) * 1977-07-25 1979-02-22 Fuji Xerox Co Ltd Electrophotographic toner composition

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5187043A (en) * 1975-01-29 1976-07-30 Kopia Kk
JPS545435A (en) * 1977-06-15 1979-01-16 Ricoh Co Ltd Developer for electropotography
JPS5423539A (en) * 1977-07-25 1979-02-22 Fuji Xerox Co Ltd Electrophotographic toner composition

Also Published As

Publication number Publication date
JPS6350699B2 (en) 1988-10-11

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