申请人:Xerox Corporation
公开号:US20040065227A1
公开(公告)日:2004-04-08
Disclosed is a phase change ink composition comprising an ink vehicle, a colorant, and a nonpolymeric organic gelator selected from the group consisting of anthracene-based compounds, steroid compounds, partially fluorinated high molecular weight alkanes, high molecular weight alkanes with exactly one hetero atom, chiral tartrate compounds, chiral butenolide-based compounds, bis-urea compounds, guanines, barbiturates, oxamide compounds, ureidopyrimidone compounds, and mixtures thereof, said organic gelator being present in the ink in an amount of no more than about 20 percent by weight of the ink, said ink having a melting point at or below which the ink is a solid, said ink having a gel point at or above which the ink is a liquid, and said ink exhibiting a gel state between the melting point and the gel point, said ink exhibiting reversible transitions between the solid state and the gel state upon heating and cooling, said ink exhibiting reversible transitions between the gel state and the liquid state upon heating and cooling, said melting point being greater than about 35° C., said gel point being greater than said melting point. Also disclosed are imaging processes employing phase change inks containing gelator additives.
本发明公开了一种相变油墨组合物,该组合物包含油墨载体、着色剂和非聚合有机凝胶剂,这些非聚合有机凝胶剂选自蒽类化合物、类固醇化合物、部分氟化的高分子量烷烃、含有一个杂原子的高分子量烷烃、手性酒石酸盐化合物、手性丁烯内酯类化合物、双脲化合物、鸟嘌呤、巴比妥酸盐、草酰胺化合物、脲基嘧啶酮化合物、手性酒石酸盐化合物、手性丁烯内酯化合物、双脲化合物、鸟嘌呤、巴比妥酸盐、草酰胺化合物、脲基嘧啶酮化合物及其混合物,所述有机凝胶剂在油墨中的含量不超过油墨重量的 20%、所述油墨的熔点为固态或低于熔点,所述油墨的凝胶点为液态或高于凝胶点,所述油墨在熔点和凝胶点之间呈现凝胶态,所述油墨在加热和冷却时在固态和凝胶态之间呈现可逆转换,所述油墨在加热和冷却时在凝胶态和液态之间呈现可逆转换,所述熔点高于约 35°C.,所述凝胶点大于所述熔点。还公开了采用含有凝胶剂添加剂的相变油墨的成像工艺。