1
Shigeyuki Ehashi, Junichi Tsuchida, Kenichi Kakimoto, Hiromitsu Katsura: Pigment compositions. Toyo Ink Manufacturing, Kenway & Jenney, January 12, 1982: US04310359 (38 worldwide citation)

A pigment composition is disclosed which includes a pigment and a coloring compound of the general formula (I), ##STR1## wherein Q represents a residue of a coloring compound other than phthalocyanine, X represents --SO.sub.2 -- or --CO--, m and n represent, respectively, an integer of from 1 to 4 a ...


2
Hiromitsu Katsura, Shigeyuki Ehashi, Junichi Tsuchida, Kenichi Kakimoto: Pigment compositions and use thereof. Toyo Ink Manufacturing, Kenway & Jenney, March 2, 1982: US04317682 (19 worldwide citation)

There is provided a pigment composition comprising 100 parts by weight of a pigment and from 0.3 to 30 parts by weight of a colorless or slightly colored aromatic compound having the following general formula (I) ##STR1## wherein Q represents a residue of an aromatic polycyclic compound which is joi ...


3
Hiromitsu Katsura, Shigeyuki Ehashi, Motohiko Kashioka, Makoto Sakamoto: Pigment composition. Toyo Ink Manufacturing, Bucknam and Archer, May 12, 1987: US04664714 (13 worldwide citation)

A pigment composition consisting of 100 parts by weight of a pigment, and from 0.1 to 30 parts by weight of a pigment dispersant of formula ##STR1## in which Q is (a) an anthraquinone dye or pigment radical, (b) an azo dye or pigment radical, (c) a benzimidazolone dye or pigment radical, (d) a phtha ...


4
Hisashi Uraki, Ichiro Toyoda, Shigeyuki Ehashi, Seiji Aida, Yasuharu Iida, Seiji Sawada, Akio Sato: Water-based ink-jet recording fluid. Toyo Ink Manufacturing, Oblon Spivak McClelland Maier & Neustadt P C, October 26, 1999: US05972087 (13 worldwide citation)

By use of recording liquid for water based inkjet with pigment and colloidal silica, it is possible to obtain prints print recorded on plain paper with good clearness and high quality and image of the print recorded material with sufficient water resistance and light resistance.



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