GRAY INK COMPOSITION AND METHOD OF MAKING THE SAME
摘要
<p>A gray ink composition includes an ink vehicle having a black pigment and at least one color pigment dispersed therein. An anionic dispersant is: a) dispersed in the ink vehicle; b) associated with at least a portion of a surface of at least one of the dispersed black pigment or the at least one dispersed color pigment; and/or c) combinations thereof. At least one of the black pigment or the color pigment(s) has an anionic surfactant that is associated with at least another portion of the surface thereof.</p>
申请公布号
EP2035514(A2)
申请公布日期
2009.03.18
申请号
EP20070812195
申请日期
2007.06.19
申请人
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人
YUE, SHUNQIONG;DOUMAUX, HOWARD A.;KELLY-ROWLEY, ANNE M.