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JPS5610566A - Production of azo pigment - Google Patents

Production of azo pigment

Info

Publication number
JPS5610566A
JPS5610566A JP8518679A JP8518679A JPS5610566A JP S5610566 A JPS5610566 A JP S5610566A JP 8518679 A JP8518679 A JP 8518679A JP 8518679 A JP8518679 A JP 8518679A JP S5610566 A JPS5610566 A JP S5610566A
Authority
JP
Japan
Prior art keywords
substd
solvent
pigment
azo pigment
org
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
JP8518679A
Other languages
Japanese (ja)
Other versions
JPS6127417B2 (en
Inventor
Masaomi Sasaki
Mitsuru Hashimoto
Kyoji Tsutsui
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 JP8518679A priority Critical patent/JPS5610566A/en
Publication of JPS5610566A publication Critical patent/JPS5610566A/en
Publication of JPS6127417B2 publication Critical patent/JPS6127417B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Photoreceptors In Electrophotography (AREA)

Abstract

PURPOSE: To obtain easily a crystalline azo pigment having excellent electrophotographic characteristics such as sensitivity and repetition characteristics, by a method wherein a specified azo pigment obtd. from a tetrazonium salt and a coupler such as Naphtol AS is treated with an org. solvent.
CONSTITUTION: A crude azo pigment of formula I [wherein A is a radical of formula II, III or IV (wherein X is (substd.) benzene, (substd.) naphthalene, (substd.) indole, etc.; Ar1 is (substd.) benzene, (substd.) naphthalene, (substd.) dibenzofuran, etc.; Ar2, Ar3 are (substd.) benzene, (substd.) naphthalene; R2, R3 are H, (substd.) lower alkyl, (substd.) phenyl; R3 is lower alkyl, carboxyl or ester thereof)] produced by using an org. solvent such as N,N-dimethylformamide as a reaction solvent, is washed with water, dried if necessary, and treated with a desired org. solvent. The solvent is used in a amount of at least 10 parts per part of the pigment. The effect is enhanced by repeating the treatment several times. The pigment is treated with stirring at a temp. of room temp. to boiling point for 1W24hr. The pigment as a crystal is recovered by filtration.
COPYRIGHT: (C)1981,JPO&Japio
JP8518679A 1979-07-04 1979-07-04 Production of azo pigment Granted JPS5610566A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8518679A JPS5610566A (en) 1979-07-04 1979-07-04 Production of azo pigment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8518679A JPS5610566A (en) 1979-07-04 1979-07-04 Production of azo pigment

Publications (2)

Publication Number Publication Date
JPS5610566A true JPS5610566A (en) 1981-02-03
JPS6127417B2 JPS6127417B2 (en) 1986-06-25

Family

ID=13851621

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8518679A Granted JPS5610566A (en) 1979-07-04 1979-07-04 Production of azo pigment

Country Status (1)

Country Link
JP (1) JPS5610566A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5821508A (en) * 1981-07-31 1983-02-08 Shimadzu Corp Potentiometer
JPS5923201A (en) * 1982-07-29 1984-02-06 Matsushita Electric Ind Co Ltd Curve distance meter

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62264699A (en) * 1986-05-12 1987-11-17 松下冷機株式会社 Apparatus for fixing cord clamp of compressor
JPS63628U (en) * 1986-06-17 1988-01-06
ES2028415T3 (en) * 1988-07-18 1992-07-01 Egli, Fischer & Co. Ag TUBULAR CLAMP.
ATE63374T1 (en) * 1988-07-18 1991-05-15 Egli Fischer & Co PIPE CLAMP.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5821508A (en) * 1981-07-31 1983-02-08 Shimadzu Corp Potentiometer
JPS5923201A (en) * 1982-07-29 1984-02-06 Matsushita Electric Ind Co Ltd Curve distance meter

Also Published As

Publication number Publication date
JPS6127417B2 (en) 1986-06-25

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