Pigment composition and ink composition using the same
AssigneeToyo Ink Mfg. Co., Ltd.
InventorsAkimitsu Mochizuki, Shigeki Kato
Life of this patent
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Abstract
A pigment composition which shows excellent flowability and stability with time, when used for an ink, and whose printed matter shows an excellent gloss, clearness, color strength and migrationfastness, and an ink composition, which pigment composition is formed of a phthalocyanine type pigment and a compound of the formula (1), P-[SO3−.Fen+/n]m (1) (wherein P is a metal-free or metal phthalocyanine residue which may be substituted with a chlorine atom, a bromine atom or both of them, n is 2 or 3 and m is a number of 1 to 4).
Claims4
A pigment composition formed of a phthalocyanine type pigment and a compound of the formula (1),
- P-[SO3−.Fen+/n]m (1)
- wherein P is a metal-free or metal phthalocyanine residue which may be substituted with a chlorine atom, a bromine atom or both of them, n is 2 or 3 and m is a number of 1 to 4.
Dependencies are inferred from the claim text.