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    • 2. 发明授权
    • Thermal ink-jet inks having reduced black to color and color to color
bleed
    • 热喷墨油墨具有减少的黑色到颜色和颜色到颜色的流失
    • US5536306A
    • 1996-07-16
    • US501262
    • 1995-07-11
    • Loren E. JohnsonHiang P. LauwNorman E. PawlowskiJames P. ShieldsJohn M. Skene
    • Loren E. JohnsonHiang P. LauwNorman E. PawlowskiJames P. ShieldsJohn M. Skene
    • C09D11/00C09D11/02
    • C09D11/38C09D11/40
    • A set of thermal ink-jet inks and method for formulating the same are provided in which the cyan, magenta, and yellow inks contain a combination of surfactants and inorganic salts designed to reduce both color to color bleed as well as black to color bleed. In general, the present cyan, magenta, and yellow inks each comprise about 0.1 to 4 wt. % of at least one dye; about 3 to 20 wt. % of at least one diol; 0 to about 5 wt. % of at least one glycol ether; about 3 to 9 wt. % of 2-pyrrolidone; up to about 4 wt. % of at least one component selected from the group consisting of biocides and buffers; and water. To achieve a reduction in color to color and black to color bleed, the cyan, magenta, and yellow inks are formulated to further comprise the following combination of surfactants and inorganic salts: (a) a surfactant component comprising about 1 to 4 wt. % of a first surfactant consisting essentially of at least one secondary alcohol ethoxylate surfactant predominantly having 4 to 8 ethoxylated units and an aliphatic chain having about 12 to 18 carbon atoms; and (b) about 3 to 6 wt. % of at least one inorganic salt component.
    • 提供一组热喷墨油墨及其配制方法,其中青色,洋红色和黄色油墨含有表面活性剂和无机盐的组合,其设计用于减少颜色到颜色渗色以及黑色到颜色渗色。 通常,本发明的青色,品红色和黄色油墨各自包含约0.1至4wt。 至少一种染料的%; 约3至20wt。 %的至少一种二醇; 0至约5wt。 %至少一种二醇醚; 约3〜9重量% %的2-吡咯烷酮; 高达约4wt。 %的至少一种选自杀生物剂和缓冲剂的组分; 和水。 为了实现颜色降低到颜色和黑色到颜色渗色,配制青色,品红色和黄色油墨以进一步包含以下表面活性剂和无机盐的组合:(a)包含约1至4wt。 基本上由至少一种仲醇乙氧基化物表面活性剂主要具有4至8个乙氧基化单元和具有约12至18个碳原子的脂族链组成的第一表面活性剂的% 和(b)约3至6wt。 %的至少一种无机盐组分。
    • 3. 发明授权
    • Dye preparation for thermal ink-jet printheads using ion exchange
    • 用于使用离子交换的热喷墨打印头的染料准备
    • US4786327A
    • 1988-11-22
    • US912868
    • 1986-09-29
    • Donald E. WenzelLoren E. JohnsonHiang P. Lauw
    • Donald E. WenzelLoren E. JohnsonHiang P. Lauw
    • B41J2/01C09B67/54C09D11/00C09D11/02
    • C09D11/328C09B67/0096
    • A process is provided for reducing the crusting propensity of dyes, complexed with sodium or other cations, used in ink-jet print heads and for improving other properties of such dyes. The process comprises replacing at least a portion of the cations on such dyes with preselected cations, such as those of the alkali metals lithium, potassium, ammonium, and amines. A two-step process may be used, in which the sodium cations first are at least partially replaced with hydrogen cations by passing an aqueous solution of the dye through the hydrogen form of a strong acid ion exchange resin and the hydrogen cations subsequently are at least partially replaced with the preselected cations by neutralizing the hydrogen-containing dye solution with a base which contains the preselected cation species. Alternately, a one-step process, comprising passing the aqueous solution of the dye through an ion-exchange resin pre-loaded with the preselected cations may be employed.
    • 提供了一种方法,用于降低用于喷墨打印头中的与钠或其它阳离子络合的染料的结皮倾向并改善这些染料的其它性质。 该方法包括用预选的阳离子(例如碱金属锂,钾,铵和胺的阳离子)代替这些染料上的至少一部分阳离子。 可以使用两步法,其中钠阳离子首先通过使染料的水溶液通过强酸离子交换树脂的氢形式至少部分地被氢阳离子代替,并且氢阳离子随后至少是 通过用含有预选阳离子种类的碱中和含氢染料溶液部分地被预选阳离子代替。 或者,可以采用一步法,包括使染料的水溶液通过预加载有预选阳离子的离子交换树脂。