Ink set for ink jet recording including polyvalent metal...

Details Ink set for ink jet recording including polyvalent metal... Ink set for ink jet recording including polyvalent metal...

2007-02-06

2007-02-06

Shah, Manish S. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

Reexamination Certificate

active

10863387

ABSTRACT:
The present invention provides an ink set for ink jet recording comprising: an ink which contains: water; a colorant; a water-soluble organic solvent; polyvalent metal ions; and compound (A) which is intrinsically capable of substantially inactivating the polyvalent metal ions, and a liquid composition is of a pH in which the polyvalent metal ions in the ink can be substantially activated. The pH of the ink is within a range in which compound (A) keeps the polyvalent metal ions substantially in an inactive state. The invention also provides an ink jet recording method which uses such an ink set.

REFERENCES:
patent: 5181045 (1993-01-01), Shields et al.
patent: 5198023 (1993-03-01), Stoffel
patent: 5320668 (1994-06-01), Shields et al.
patent: 6420083 (2002-07-01), Kawamura
patent: 2002/0093557 (2002-07-01), Takuhara et al.
patent: A 5-208548 (1993-08-01), None
patent: A 6-57192 (1994-03-01), None
patent: A 7-1837 (1995-01-01), None
patent: A 2001-152059 (2001-06-01), None

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