公开(公告)号：EP2109540A1

公开(公告)日：2009-10-21

申请号：EP08713936.6

申请日：2008-01-23

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： VASUDEVAN, Sundar

IPC: B41J2/01

CPC classification number: C09D11/40 ,  C09D11/322

Abstract: A printing system (100, 200) has a substrate (130), and first (105) and second colored inks (110). The first colored ink (105) has particles of a first pigment, and the particles have a first net zeta potential. The second colored ink (110) has particles of a second pigment and a polarity-reversing amount of a surfactant. The particles of the second pigment have a second net zeta potential opposite in polarity to the first net zeta potential. The first (105) and second colored inks (110) are configured to be printed together over a common surface (150) of said substrate (130) to form a composite color.

公开(公告)号：EP2125976B1

公开(公告)日：2018-12-05

申请号：EP08714100.8

申请日：2008-01-29

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： VASUDEVAN, Sundar

IPC: C09D11/00

CPC classification number: C09D11/38

Abstract: An ink includes a jettable vehicle including a surfactant, and a color component dispersed in the jettable vehicle. According to one exemplary embodiment, the jettable vehicle exhibits a froth half life of less than 100 minutes.

公开(公告)号：EP2794780B1

公开(公告)日：2018-06-06

申请号：EP11877906.5

申请日：2011-12-22

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： VASUDEVAN, Sundar ,  MCMANUS, Richard J. ,  WICKRAMANAYAKE, Palitha

IPC: C09D11/00 ,  C09D11/02 ,  B41J2/175 ,  C09D11/38

CPC classification number: C09D11/38 ,  B41J2/165 ,  B41J2/17503 ,  C09D175/04

Abstract: An ink composition includes a colorant, a co-solvent, and an acid chosen from oleic acid, linoleic acid, undecanoic acid, dodecanoic acid, tridecanoic acid, and combinations thereof. The ink composition further includes lithium and water. An anti-evaporative layer forms, during uncapped non-use, at an interface between air and the ink composition in an orifice of a nozzle, thereby reducing evaporation of the water from the ink composition.

公开(公告)号：EP2109540B1

公开(公告)日：2016-06-29

申请号：EP08713936.6

申请日：2008-01-23

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： VASUDEVAN, Sundar

IPC: C09D11/322 ,  C09D11/40

CPC classification number: C09D11/40 ,  C09D11/322

公开(公告)号：EP2547736A1

公开(公告)日：2013-01-23

申请号：EP10848098.9

申请日：2010-03-15

Applicant: Hewlett Packard Development Company, L.P.

Inventor： VASUDEVAN, Sundar ,  MCMANUS, Richard ,  WICKRAMANAYAKE, Palitha

IPC: C09D11/00 ,  C09D11/10

CPC classification number: C09D11/38 ,  C08K5/09 ,  C08K2201/00 ,  C09D11/324

Abstract: An ink composition for inkjet printing is disclosed herein. The ink composition includes a self-dispersed carbon black pigment with alkali metal counter ions, polyurethane, and an aqueous carrier. The aqueous carrier includes water, at least one water-soluble organic solvent, and at least one surfactant. In one embodiment, the aqueous carrier further includes an additive having a polar head group and a C
8 -C
18 hydrocarbon tail.

公开(公告)号：EP2173825A2

公开(公告)日：2010-04-14

申请号：EP08843432.9

申请日：2008-07-28

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： RENGASWAMY, Sukanya ,  BLAIR, Robert J. ,  VASUDEVAN, Sundar ,  WICKRAMANAYAKE, Palitha

IPC: C09D11/00

CPC classification number: C09D11/30 ,  C09D11/106 ,  C09D11/324

Abstract: An ink composition includes an anionic acrylate copolymer binder, and oxidized self-dispersible pigment, and an aqueous vehicle.

公开(公告)号：EP1996659A2

公开(公告)日：2008-12-03

申请号：EP07758161.9

申请日：2007-03-08

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： VASUDEVAN, Sundar ,  BHATT, Jayprakash, C. ,  RUUD, Cory, J.

IPC: C09D11/00

CPC classification number: C09D11/322

Abstract: An ink-jet ink (160) includes a jettable vehicle, a plurality of pigment solids dispersed in the jettable vehicle, and a plurality of structurally related polymers dispersed in the jettable vehicle. Additionally, a system (100) for printing images on a porous photo medium (10) includes a jettable ink (160) and a printhead loaded with the jettable ink (160).