A waterfast ink having 3.0% Food Black 2, 2.5% highly hydroxyethylated polyethyleneimine, 10.0% ammonium benzoate, and the balance water. The invention appears to function upon loss of water after printing by a polar neutralizing between the dye and the polyimine, which results in an affinity of the dye to paper. It is applicable to any dye having anionic solubilizing groups but not having quaternary ammonium and to any ammonium salt.
申请公布号
CA2076074(C)
申请公布日期
2002.07.09
申请号
CA19922076074
申请日期
1992.08.13
申请人
LEXMARK INTERNATIONAL, INC.
发明人
AULICK, RODNEY O.;BEACH, BRADLEY, L.;FRANEY, TERENCE E.;MRVOS, JAMES M.;PIEKUNKA, ANN M.;STONE, JERRY F.