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21. 发明授权

US5118350A Dye-set for improved color quality for ink-jet printers 失效
标题翻译：用于改善喷墨打印机色彩的染色剂
公开(公告)号：US5118350A
公开(公告)日：1992-06-02
申请号：US737945
申请日：1991-07-29
申请人： Keshava A. Prasad
发明人： Keshava A. Prasad
IPC分类号： C09D11/00 , C09D11/02
CPC分类号： C09D11/40
摘要： A set of dyes is provided for use in vehicles employing about 5 to 11% of glycols and/or glycol ethers and the balance water. The dye-set comprises about 2 to 3% of hydrolyzed-Reactive Red 180, about 0.3 to 1% Acid Red 52, with the ratio of hydrolyzed-RR180:AR52 ranging from about 2:1 to 5:1, about 1.75 to 2.75% of Acid Yellow 23, and about 1.75 to 2.5% of Acid Blue 9. The particular dye-set provides bright, saturated colors for ink-jet application for not only special coated paper, but also "plain" office papers and transparencies.

22. 发明授权

US09708495B2 Ink sets for ink-jet printing 有权
公开(公告)号：US09708495B2
公开(公告)日：2017-07-18
申请号：US14350779
申请日：2011-10-28
申请人： George Sarkisian , Keshava A. Prasad , John Morrow Gardner , Tayo Olu Yolemi
发明人： George Sarkisian , Keshava A. Prasad , John Morrow Gardner , Tayo Olu Yolemi
IPC分类号： C09D11/322 , C09D11/38 , C09D11/40
CPC分类号： C09D11/322 , C09D11/38 , C09D11/40
摘要： The present disclosure is drawn to ink-jet ink sets, as well as related systems and methods. In one example, an ink set for ink-jet printing can comprise a cyan ink-jet ink including from about 2 wt % to about 5 wt % of a cyan pigment admixed in a first ink vehicle; a magenta ink-jet ink including a magenta colorant comprising from about 2 wt % to about 5 wt % of a magenta pigment and about 0.1 wt % to about 1 wt % of a slightly soluble magenta dye admixed in a second ink vehicle; and a yellow ink-jet ink including from about 2 wt % to about 5 wt % of a yellow pigment admixed in a third ink vehicle.

23. 发明授权

US09493013B2 Inkjet ink set 有权
标题翻译：喷墨油墨套装
公开(公告)号：US09493013B2
公开(公告)日：2016-11-15
申请号：US13982174
申请日：2011-01-31
申请人： Xiaohe Chen , Pradeep Kumar Koyadan Kizhakkedath , Dennis P. Parazak , Keshava A. Prasad , Savka Ilieva Stoeva , Yi-Hua Tsao , Tze Hwei Tseeng , Ervin Mubarekyan
发明人： Xiaohe Chen , Pradeep Kumar Koyadan Kizhakkedath , Dennis P. Parazak , Keshava A. Prasad , Savka Ilieva Stoeva , Yi-Hua Tsao , Tze Hwei Tseeng , Ervin Mubarekyan
IPC分类号： B41J2/21 , C09D11/322 , C09D11/40 , C09D11/54
CPC分类号： B41J2/2107 , B41J2/2114 , C09D11/322 , C09D11/40 , C09D11/54
摘要： An inkjet ink set includes a black ink, a yellow ink, a cyan ink, and a magenta ink. The magenta ink includes an ink vehicle including a polyurethane binder, and a dispersed magenta pigment in the ink vehicle. The magenta pigment is chosen from Pigment Red 282.
摘要翻译：喷墨油墨组包括黑色油墨，黄色油墨，青色油墨和品红色油墨。品红色油墨包括在油墨载体中包含聚氨酯粘合剂和分散的品红色颜料的油墨载体。品红色颜料选自颜料红282。

24. 发明授权

US09187661B2 Ink composition 有权
标题翻译：墨水组成
公开(公告)号：US09187661B2
公开(公告)日：2015-11-17
申请号：US14349025
申请日：2011-10-04
申请人： Keshava A. Prasad
发明人： Keshava A. Prasad
IPC分类号： C09D11/30 , C09D11/322 , C09D11/34 , C09D11/38 , B41J2/175
CPC分类号： C09D11/30 , B41J2/17503 , C09D11/322 , C09D11/34 , C09D11/38
摘要： An ink composition includes from about 2 wt % to about 5 wt % of a colorant; from about 10 wt % to about 20 wt % of a co-solvent; from about 0.5 wt % to about 1.0 wt % of an alkyl phosphate ester; from about 0.5 wt % to about 9 wt % of any of methyl gluceth-10, methyl gluceth-20, PPG-10 methyl glucose ether, or PPG-20 methyl glucose ether; and a balance of water.
摘要翻译：油墨组合物包含约2重量％至约5重量％的着色剂; 约10重量％至约20重量％的共溶剂; 约0.5重量％至约1.0重量％的磷酸烷基酯; 约0.5重量％至约9重量％的任何甲基葡聚糖-10，甲基葡聚糖-20，PPG-10甲基葡萄糖醚或PPG-20甲基葡萄糖醚; 和水的平衡。

25. 发明申请

US20130307914A1 INKJET INK SET 有权
公开(公告)号：US20130307914A1
公开(公告)日：2013-11-21
申请号：US13982174
申请日：2011-01-31
申请人： Xiaohe Chen , Pradeep Kumar Koyadan Kizhakkedath , Dennis P. Parazak , Keshava A. Prasad , Savka Ilieva Stoeva , Yi-Hua Tsao , Tze Hwei Tseeng , Ervin Mubarekyan
发明人： Xiaohe Chen , Pradeep Kumar Koyadan Kizhakkedath , Dennis P. Parazak , Keshava A. Prasad , Savka Ilieva Stoeva , Yi-Hua Tsao , Tze Hwei Tseeng , Ervin Mubarekyan
IPC分类号： C09D11/00
CPC分类号： B41J2/2107 , B41J2/2114 , C09D11/322 , C09D11/40 , C09D11/54
摘要： An inkjet ink set includes a black ink, a yellow ink, a cyan ink, and a magenta ink. The magenta ink includes an ink vehicle including a polyurethane binder, and a dispersed magenta pigment in the ink vehicle. The magenta pigment is chosen from Pigment Red 282.
摘要翻译：喷墨油墨组包括黑色油墨，黄色油墨，青色油墨和品红色油墨。品红色油墨包括在油墨载体中包含聚氨酯粘合剂和分散的品红色颜料的油墨载体。品红色颜料选自颜料红282。

26. 发明授权

US07677714B2 Inkjet inks providing improved wet smudge on porous print media 有权
标题翻译：喷墨油墨在多孔印刷介质上提供改善的湿涂层
公开(公告)号：US07677714B2
公开(公告)日：2010-03-16
申请号：US11070897
申请日：2005-03-02
申请人： George Sarkisian , Xiaohe Chen , Keshava A. Prasad
发明人： George Sarkisian , Xiaohe Chen , Keshava A. Prasad
IPC分类号： G01D11/00
CPC分类号： B41M5/0017 , B41M7/0018 , C09D11/322 , C09D11/54
摘要： A printing system for use in inkjet printing. The printing system includes an inkjet ink having a free binder, an additional free binder, and a chemically modified pigment, a fixer fluid and a porous print medium.
摘要翻译：一种用于喷墨打印的打印系统。印刷系统包括具有游离粘合剂，附加游离粘合剂和化学改性颜料，定影液和多孔印刷介质的喷墨油墨。

27. 发明授权

US07622513B2 Inkjet printing system that provides improved mottle 有权
标题翻译：喷墨打印系统提供改进的斑点
公开(公告)号：US07622513B2
公开(公告)日：2009-11-24
申请号：US11001387
申请日：2004-12-01
申请人： George Sarkisian , Keshava A. Prasad
发明人： George Sarkisian , Keshava A. Prasad
IPC分类号： C09D11/00
CPC分类号： B41M7/0018 , B41M5/0017 , B41M5/0023 , C09D11/324
摘要： An inkjet printing system that includes a fixer fluid and a pigment-based inkjet ink. The fixer fluid includes a cationic polymer and an acidic crashing agent. The inkjet ink includes an anionic pigment and at least one of the following: at least one nonionic surfactant present in the inkjet ink at less than or equal to approximately 0.1% by weight, at least one anionic binder present in the inkjet ink at less than or equal to approximately 2% by weight, and less than or equal to approximately 20% by weight of at least one organic solvent.
摘要翻译：一种喷墨打印系统，其包括定影液和基于颜料的喷墨油墨。定影液包含阳离子聚合物和酸性崩解剂。喷墨油墨包括阴离子颜料和以下至少一种：喷墨油墨中存在的至少一种非离子表面活性剂，其含量小于或等于约0.1重量％，至少一种存在于喷墨油墨中的阴离子粘合剂小于或等于约2重量％，和小于或等于约20重量％的至少一种有机溶剂。

28. 发明申请

US20080257203A1 FIXER FLUID AND INKJET INK SETS INCLUDING THE SAME 有权
标题翻译：固定式流体和喷嘴油墨包括其中
公开(公告)号：US20080257203A1
公开(公告)日：2008-10-23
申请号：US11736772
申请日：2007-04-18
申请人： Mark L. Choy , Gary W. Byers , Yi-Hua Tsao , George Sarkisian , Keshava A. Prasad , Christian Schmid , Ervin Mubarekyan
发明人： Mark L. Choy , Gary W. Byers , Yi-Hua Tsao , George Sarkisian , Keshava A. Prasad , Christian Schmid , Ervin Mubarekyan
IPC分类号： B41J2/01
CPC分类号： C09D11/54 , B41M5/0017 , B41M7/0018 , C09D11/40
摘要： A fixer fluid for an inkjet ink set includes an aqueous vehicle, and a tri-alkyl-substituted amine-N-oxide. The fixer fluid also includes an acid, a cationic polyelectrolyte, or combinations of the acid and polyelectrolyte(s).
摘要翻译：用于喷墨油墨组的定影液包括水性载体和三烷基取代的胺-N-氧化物。定影液还包括酸，阳离子聚电解质，或酸和聚电解质的组合。

29. 发明授权

US06022908A Printing liquids for improved print quality 失效
标题翻译：印刷液体以提高打印质量
公开(公告)号：US06022908A
公开(公告)日：2000-02-08
申请号：US64643
申请日：1998-04-22
申请人： Zeying Ma , Keshava A. Prasad
发明人： Zeying Ma , Keshava A. Prasad
IPC分类号： B41J2/01 , B41M5/00 , C09D11/00 , C09D11/02 , C09D11/10 , C09D133/02 , C09D133/08 , C09D133/10
CPC分类号： C09D11/40
摘要： A set of printing liquids is disclosed comprising a first anionic printing liquid comprising an aqueous vehicle, at least one first colorant, and at least one first anionic polymer; a second anionic printing liquid comprising an aqueous vehicle at least one second colorant, at least one second anionic polymer, and an acid additive having a pKa up to the pKa of the at least first polymer of the first liquid; a third cationic printing liquid comprising an aqueous vehicle, at least one third colorant, at least one third cationic polymer, and a pH in the range from about 2 to about 5; and a fourth anionic printing liquid comprising an aqueous vehicle, at least one fourth anionic dye, and a precipitating agent. More specifically, the present set of printing liquids may find application in ink-jet printing. The set of ink-jet inks provides improved print quality, specifically, reduced bleed; improved edge-acuity, uniform area fills, and color quality; while maximizing lightfastness without sacrificing printing reliability.
摘要翻译：公开了一组印刷液体，其包含第一阴离子印刷液体，其包含含水载体，至少一种第一着色剂和至少一种第一阴离子聚合物; 第二阴离子印刷液体，其包含水性载体至少一种第二着色剂，至少一种第二阴离子聚合物和具有至多第一液体的至少第一聚合物的pKa的pKa的酸添加剂; 第三阳离子印刷液体，其包含水性载体，至少一种第三着色剂，至少一种第三阳离子聚合物和约2至约5的pH; 和第四阴离子印刷液体，其包含含水载体，至少一种第四阴离子染料和沉淀剂。更具体地，本组印刷液体可以应用于喷墨印刷。这套喷墨油墨提供了改进的打印质量，特别是减少了出血; 改善边缘敏锐度，均匀区域填充和颜色质量; 同时最大化耐光性而不牺牲打印可靠性。

30. 发明授权

US5946012A Reliable high performance drop generator for an inkjet printhead 失效
标题翻译：用于喷墨打印头的可靠的高性能液滴发生器
公开(公告)号：US5946012A
公开(公告)日：1999-08-31
申请号：US90968
申请日：1998-06-04
申请人： Kenneth J. Courian , John L. Stoffel , Richard A. Sader , Keshava A. Prasad , Steven L. Webb , David H. Donovan , Jules G. Moritz, III , Brian J. Keefe , Steven W. Steinfield , Winthrop D. Childers
发明人： Kenneth J. Courian , John L. Stoffel , Richard A. Sader , Keshava A. Prasad , Steven L. Webb , David H. Donovan , Jules G. Moritz, III , Brian J. Keefe , Steven W. Steinfield , Winthrop D. Childers
IPC分类号： B41J2/05 , B41J2/14 , B41J2/16
CPC分类号： B41J2/1643 , B41J2/04511 , B41J2/04541 , B41J2/04543 , B41J2/04546 , B41J2/0458 , B41J2/04581 , B41J2/14024 , B41J2/1404 , B41J2/14072 , B41J2/14129 , B41J2/14145 , B41J2/14201 , B41J2/1433 , B41J2/1603 , B41J2/1623 , B41J2/1625 , B41J2/1628 , B41J2/1631 , B41J2/1634 , B41J2202/13
摘要： An inkjet drop ejection system comprises a combination of printhead components and ink, mutually tuned to maximize operating characteristics of the printhead and print quality and dry time of the ink. Use of a short shelf (distance from ink source to ink firing element), on the order of 55 microns, provides a very high speed refill. However, it is a characteristic of high speed refill that it has a tendency for being over-damped. To provide the requisite damping, the ink should have a viscosity greater than about 2 cp. In this way, the ink and architecture work together to provide a tuned system that enables stable operation at high frequencies. One advantage of the combination of a pigment and a dispersant in the ink is the resultant higher viscosity provided. The high speed would be of little value if the ink did not have a fast enough rate of drying. This is accomplished by the addition of alcohols or alcohol(s) and surfactant(s) to the ink. Fast dry times are achieved with a combination of alcohols, such as iso-propyl alcohol with a 4 or 5 carbon alcohol or with iso-propyl alcohol plus surfactant(s). One preferred embodiment of a short shelf (90 to 130 microns), ink viscosity of about 3 cp, and surface tension of about 54 provides a high speed drop generator capable of operating at about 12 KHz. Reducing the shelf length to about 55 microns, in combination with rotating the substrate at an angle to the scan direction, permits maximum drop generator operation as high as about 20 KHz. As a consequence of employing pigment-based inks, high optical densities are realized, along with excellent permanence (no fade and better waterfastness), and good stability. The combination of preferred ink and pen architecture provides good drop generator stability.
摘要翻译：喷墨墨滴喷射系统包括打印头部件和油墨的组合，其相互调节以最大化打印头的操作特性以及油墨的打印质量和干燥时间。使用大约55微米的短搁架（墨水源到墨水喷射元件的距离）提供了非常高的速度补充。然而，高速补充的特征是它具有过度阻尼的倾向。为了提供必要的阻尼，油墨的粘度应大于约2cp。以这种方式，墨水和结构共同工作，提供了一个可在高频下稳定运行的调谐系统。油墨中颜料和分散剂的组合的一个优点是得到较高的粘度。如果墨水没有足够的干燥速度，高速度就没有什么价值。这通过向油墨中加入醇或醇和表面活性剂来实现。快速干燥时间是通过醇，如异丙醇与4或5碳醇或与异丙醇加表面活性剂的组合来实现的。短架（90-130微米），油墨粘度约为3cp，表面张力约为54的一个优选实施例提供了能够在约12KHz下操作的高速液滴发生器。将搁板长度减小至约55微米，与基板以扫描方向成一定角度的旋转结合使得最大的液滴发生器运转高达约20KHz。作为使用颜料基油墨的结果，实现了高的光密度，以及优异的耐久性（不褪色和更好的耐水性）和良好的稳定性。优选的墨水和笔结构的组合提供了良好的液滴发生器稳定性。

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