US 7,393,400 B2
	Non-aqueous ink composition for ink jet
Takaya Kitawaki, Izunokuni (Japan); Masashi Hiroki, Yokohama (Japan); and Hiroshi Kiyomoto, Hiratsuka (Japan)
Assigned to Toshiba Tec Kabushiki Kaisha, Tokyo (Japan)
Filed on Dec. 08, 2005, as Appl. No. 11/299,199.
Application 11/299199 is a continuation in part of application No. 11/189418, filed on Jul. 26, 2005, abandoned.
Prior Publication US 2007/0022904 A1, Feb. 01, 2007
Int. Cl. C09D 11/00 (2006.01); C09D 11/02 (2006.01)

U.S. Cl. 106—31.86  [106/31.66]

10 Claims

1. A non-aqueous ink composition for an ink jet comprising a pigment, a dispersant, and a non-aqueous solvent, wherein at least 50% by weight of the entire non-aqueous solvent is an ester series solvent having 24 to 36 carbon atoms, the ester series solvent having 24 to 36 carbon atoms being at least one solvent selected from the group consisting of isocetyl 2-ethyl hexanoate, cetyl 2-ethyl hexanoate, octyl palmitate, octyl dodecyl pivalate, isocetyl myristate, octyl dodecyl dimethyl octanoate, glycerin tri(capryl.capric acid), isocetyl stearate and isostearyl isostearate.