GB1343709A - Pigmetns useful in electrophotography - Google Patents

Pigmetns useful in electrophotography

Info

Publication number
GB1343709A
GB1343709A GB3447771A GB3447771A GB1343709A GB 1343709 A GB1343709 A GB 1343709A GB 3447771 A GB3447771 A GB 3447771A GB 3447771 A GB3447771 A GB 3447771A GB 1343709 A GB1343709 A GB 1343709A
Authority
GB
United Kingdom
Prior art keywords
pigments
acidic
july
salt
aqueous solution
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.)
Expired
Application number
GB3447771A
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1343709A publication Critical patent/GB1343709A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B69/00—Dyes not provided for by a single group of this subclass
    • C09B69/02—Dyestuff salts, e.g. salts of acid dyes with basic dyes
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/09—Colouring agents for toner particles
    • G03G9/0906—Organic dyes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Photoreceptors In Electrophotography (AREA)

Abstract

1343709 Preparing pigments EASTMAN KODAK CO 22 July 1971 [24 July 1970] 34477/71 Heading C4P [Also in Division G2] Pigments are prepared by reacting in an aqueous medium a water-soluble acidic dyestuff or a salt thereof having an acidity such that a saturated aqueous solution thereof has a pH less than 5 at 20‹ C. with a water-soluble basic dyestuff or a salt thereof having a basicity such that a saturated aqueous solution thereof has a pH greater than 8 at 20‹ C. and then treating the precipitate formed with an acidic mordant, e.g. phospho-tungstic or phosphomolybdic acids or mixtures thereof. The acidic dyes which preferably contain at least two sulphonic or carboxylic acid groups per molecule and the basic dyes which preferably contain two amino groups per molecule may be of the nitro, azo, arylmethane, methine, acridine, thiazole, azine, anthraquinone, or phthalocyanine series. The pigments are used in electrophotographic developer compositions.
GB3447771A 1970-07-24 1971-07-22 Pigmetns useful in electrophotography Expired GB1343709A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5819070A 1970-07-24 1970-07-24

Publications (1)

Publication Number Publication Date
GB1343709A true GB1343709A (en) 1974-01-16

Family

ID=22015259

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3447771A Expired GB1343709A (en) 1970-07-24 1971-07-22 Pigmetns useful in electrophotography

Country Status (4)

Country Link
JP (1) JPS511431B1 (en)
DE (1) DE2136996C3 (en)
FR (1) FR2131172A5 (en)
GB (1) GB1343709A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7018769B2 (en) 2003-09-30 2006-03-28 Samsung Electronics Company Liquid toners comprising organic pigments and methods

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050066454A1 (en) * 2003-09-30 2005-03-31 Stulc Leonard J. Black colorant compound and methods of making and using same
US20050066853A1 (en) * 2003-09-30 2005-03-31 Stulc Leonard J. Ionically complexed colorants and methods of making and using same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7018769B2 (en) 2003-09-30 2006-03-28 Samsung Electronics Company Liquid toners comprising organic pigments and methods

Also Published As

Publication number Publication date
JPS511431B1 (en) 1976-01-17
FR2131172A5 (en) 1972-11-10
AU3161071A (en) 1973-01-25
DE2136996B2 (en) 1975-02-06
DE2136996C3 (en) 1975-09-11
DE2136996A1 (en) 1972-01-27

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees