JPS5776071A - Water-based black ink composition for ink-jet printing - Google Patents

Water-based black ink composition for ink-jet printing

Info

Publication number
JPS5776071A
JPS5776071A JP15212280A JP15212280A JPS5776071A JP S5776071 A JPS5776071 A JP S5776071A JP 15212280 A JP15212280 A JP 15212280A JP 15212280 A JP15212280 A JP 15212280A JP S5776071 A JPS5776071 A JP S5776071A
Authority
JP
Japan
Prior art keywords
salt
carboxyl
sulfonate group
group
compound
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
Application number
JP15212280A
Other languages
Japanese (ja)
Inventor
Tomoyuki Yamaguchi
Tadashi Fujii
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 JP15212280A priority Critical patent/JPS5776071A/en
Publication of JPS5776071A publication Critical patent/JPS5776071A/en
Pending legal-status Critical Current

Links

Landscapes

  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

PURPOSE: To provide the titled ink giving a pure black, clear printed image having high density without clogging, and storable for a long time without discoloration, by using a mixture of three compounds having specific structure formulas, as the colorant.
CONSTITUTION: The objective composition is prepared by using a colorant consisting of a mixture of (A) a compound formulaI(A1WA5 are OH, solfonate group, etc,; D1WD4 are benzene ring which may have substituent groups such as amino, carboxyl, sulfonate group etc.; the sulfonate group of A1WA5 and D1WD4 may be Na salt, and those of carboxyl and OH may be K salt, etc.), (B) and compound of formula II (X1WX8 are OH, solfonate group, carboxyl, etc., or Be, I or Cl; the sulfonate group is Na salt and the OH and carboxyl groups are Na salt or K salt; Y and Z are H, Na or K) and (C) a compound of formula III[A1WA4 are OH, sulfonate group, carboxyl, etc.; D1 and D2 are benzene ring which may have substituent groups such as sulfonate group, etc., or hydrocarbon group of formula CnH2n+1 (n is 0W2); the sulfonate group of A1WA4 and D1WD2 may be Na slat and the carboxyl and OH may be Na salt, etc.]. The content of the colorant in the ink composition is pref. 1W7wt%
COPYRIGHT: (C)1982,JPO&Japio
JP15212280A 1980-10-31 1980-10-31 Water-based black ink composition for ink-jet printing Pending JPS5776071A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15212280A JPS5776071A (en) 1980-10-31 1980-10-31 Water-based black ink composition for ink-jet printing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15212280A JPS5776071A (en) 1980-10-31 1980-10-31 Water-based black ink composition for ink-jet printing

Publications (1)

Publication Number Publication Date
JPS5776071A true JPS5776071A (en) 1982-05-12

Family

ID=15533536

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15212280A Pending JPS5776071A (en) 1980-10-31 1980-10-31 Water-based black ink composition for ink-jet printing

Country Status (1)

Country Link
JP (1) JPS5776071A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58201863A (en) * 1982-05-18 1983-11-24 Ricoh Co Ltd Inkjet recording ink

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58201863A (en) * 1982-05-18 1983-11-24 Ricoh Co Ltd Inkjet recording ink

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