公开(公告)号：US10077370B2

公开(公告)日：2018-09-18

申请号：US15512814

申请日：2014-09-26

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

Inventor： James P. Shields ,  Raymond Adamic ,  Sundar Vasudevan

IPC: C08F2/46 ,  C08F2/50 ,  C08G61/04 ,  C09D11/38 ,  C09D11/033 ,  C09D11/101 ,  C09D11/106 ,  C09D11/107 ,  C09D11/322

CPC classification number: C09D11/38 ,  C09D11/033 ,  C09D11/101 ,  C09D11/104 ,  C09D11/106 ,  C09D11/107 ,  C09D11/322 ,  C09D11/324 ,  C09D11/328

Abstract: A non-Newtonian photo-curable ink composition that comprises a structured network forming agent in an amount ranging from about 0.1 wt % to about 20 wt % by total weight of the ink composition; a salt in an amount ranging from about 0.05 wt % to about 20 wt % by total weight of the ink composition; an organic solvent; a photo-initiator; and a polymerizable material; wherein the ink composition has a first dynamic viscosity ranging from 25 cps to 10,000 cps at a first state and a second dynamic viscosity ranging from 1 cps to 50 cps at a second state. Also described herein is a method for making such non-Newtonian photo-curable ink composition and a method for producing printed images using such non-Newtonian photo-curable ink composition.

公开(公告)号：US20170247559A1

公开(公告)日：2017-08-31

申请号：US15519368

申请日：2014-10-20

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

Inventor： Raymond Adamic ,  Sundar Vasudevan

IPC: C09D11/38 ,  C09D11/033 ,  B41J2/175 ,  C09D11/322

CPC classification number: C09D11/38 ,  B41J2/17513 ,  B41J2/17553 ,  C09D11/033 ,  C09D11/322

Abstract: The present disclosure provides non-Newtonian inkjet inks and related methods. In one example, a non-Newtonian inkjet ink can comprise silica, alumina, and organic solvent. The non-Newtonian inkjet ink can be an aqueous ink having a pH from 9 to 12 and a conductivity from 100 to 2000 μS/cm.

公开(公告)号：US20160082734A1

公开(公告)日：2016-03-24

申请号：US14960783

申请日：2015-12-07

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Ralph L . Stathem ,  Beverly Asoo Stonas ,  Sundar Vasudevan ,  Frank Shala

IPC: B41J2/14

CPC classification number: B41J2/1433 ,  B41J2/175 ,  B41J2/17513 ,  B41J2/17553 ,  B41J2/19 ,  B41J29/377

Abstract: A print head module for delivering ink to a print head comprising a module venting system comprising a one-time vent built into the interior of the print head module in which, when an amount of ink comes in contact with the one-time vent, air is prevented from passing through the one-time vent. A system for delivering ink to a print head comprising a print head, a external reservoir of ink, and a print head module comprising a one-time vent built into the interior of the print head module and fluidly coupling the print head to the external reservoir of ink, in which, when an amount of ink comes in contact with the one-time vent within the print head module, air is prevented from passing through the one-time vent.

公开(公告)号：US20230042522A1

公开(公告)日：2023-02-09

申请号：US17384117

申请日：2021-07-23

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Jayprakash C. Bhatt ,  Marcos A. Barreto Caban ,  Sundar Vasudevan

IPC: C09D11/38 ,  C09D11/322 ,  C09D11/36 ,  B41M5/00

Abstract: An example of an inkjet composition includes a colorant, a density modifier selected from the group consisting of a triiodo amino derivative of isophthalic acid, a mixture of polysucrose and sodium diatrizoate, colloidal silica particles coated with polyvinylpyrrolidone, and combinations thereof; and an aqueous vehicle. The inkjet composition may be inkjet printed on a substrate, using a thermal or piezoelectric printer.

公开(公告)号：US09963608B2

公开(公告)日：2018-05-08

申请号：US15519368

申请日：2014-10-20

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

Inventor： Raymond Adamic ,  Sundar Vasudevan

IPC: C09D11/38 ,  C09D11/033 ,  C09D11/322 ,  B41J2/175

CPC classification number: C09D11/38 ,  B41J2/17513 ,  B41J2/17553 ,  C09D11/033 ,  C09D11/322

Abstract: The present disclosure provides non-Newtonian inkjet inks and related methods. In one example, a non-Newtonian inkjet ink can comprise silica, alumina, and organic solvent. The non-Newtonian inkjet ink can be an aqueous ink having a pH from 9 to 12 and a conductivity from 100 to 2000 μS/cm.

公开(公告)号：US20180010003A1

公开(公告)日：2018-01-11

申请号：US15543434

申请日：2015-01-30

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

Inventor： Sundar Vasudevan ,  Natalie Harvey ,  Richard J. McManus ,  Vladimir Jakubek

IPC: C09D11/106 ,  C09D11/322 ,  C08F222/06 ,  B41J2/175 ,  C09D11/38 ,  C08F210/10 ,  C08K5/1515

CPC classification number: C09D11/106 ,  B41J2/17503 ,  C08F210/10 ,  C08F222/06 ,  C08F2500/09 ,  C08F2810/40 ,  C08K5/1515 ,  C09D11/30 ,  C09D11/322 ,  C09D11/38

Abstract: An ink composition includes water, a co-solvent, a colorant, and a modified polymer or copolymer additive. The modified polymer or copolymer additive is selected from the group consisting of i) a hydrolyzed poly(isobutylene-alt-maleic anhydride), ii) a hydrolyzed poly(maleic anhydride-alt-1-octadecene), and iii) a modified polymer or copolymer. The modified polymer or copolymer includes a repeating unit of a backbone chain, and a long chain pendant group attached to a carbon atom of the repeating unit. In the backbone chain, the long chain pendant group of the repeating unit is separated by fewer than 8 spacer carbon atoms from another long chain pendant group of an adjacent repeating unit.

公开(公告)号：US20170166765A1

公开(公告)日：2017-06-15

申请号：US15308532

申请日：2014-06-06

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

Inventor： Richard J. McManus ,  Sundar Vasudevan ,  Vladimir Jakubek

IPC: C09D11/36 ,  C09D11/102 ,  B41J2/175 ,  C09D11/38

CPC classification number: C09D11/36 ,  B41J2/17503 ,  C09D11/102 ,  C09D11/324 ,  C09D11/38

Abstract: An ink composition includes colorant, hydroxylated and non-hydroxylated co-solvents, and water. A weight percent ratio of hydroxylated to non-hydroxylated co-solvents ranges from 46:54 to about 62:38. The composition also includes an acid and a polyurethane copolymer binder. The acid is selected from the group consisting of oleic acid, linoleic acid, undecanoic acid, dodecanoic acid, tridecanoic acid, and combinations thereof. The binder is formed from the polymerization of a diisocyanate and at least three diols including a first diol containing a hydrophilic stabilizing group, and a second diol having less than 8 atoms in a backbone chain between two hydroxyl groups. A mole percentage of the second diol is at least 30% of a total mole percentage of diol monomers in the binder. An acid number of the binder ranges from 50 to 75. The composition also includes lithium present in an amount ranging from about 50 to about 400 ppm.

公开(公告)号：US20140285593A1

公开(公告)日：2014-09-25

申请号：US14354650

申请日：2011-12-22

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Sundar Vasudevan ,  Richard J. McManus ,  Palitha Wickramanayake

IPC: C09D11/00 ,  B41J2/175 ,  C09D175/04

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.

Abstract translation: 油墨组合物包括着色剂，助溶剂和选自油酸，亚油酸，十一烷酸，十二烷酸，十三烷酸及其组合的酸。 油墨组合物还包括锂和水。 在非封盖不使用期间，在喷嘴的孔口中的空气和油墨组合物之间的界面处形成防蒸发层，从而减少水从油墨组合物的蒸发。

公开(公告)号：US20210155815A1

公开(公告)日：2021-05-27

申请号：US17047035

申请日：2018-08-01

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

Inventor： Sundar Vasudevan ,  Raymond Adamic ,  Max Yen

IPC: C09D11/328 ,  C09D11/324 ,  C09D11/322 ,  C09D11/037 ,  C09D11/033 ,  C09B67/22 ,  B41M5/00

Abstract: A black inkjet ink composition includes a carbon black pigment; a dispersion synergist having an aromatic structure substituted with at least one solubilizing moiety selected from the group consisting of an ionic moiety, a non-ionic moiety, and a combination thereof; a polar solvent; and water. A method for making the black inkjet ink composition and a printing method using the same is also disclosed.

公开(公告)号：US10400123B2

公开(公告)日：2019-09-03

申请号：US15309440

申请日：2014-06-06

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

Inventor： Sundar Vasudevan ,  Richard J. McManus ,  Vladimir Jakubek

IPC: B41J2/17 ,  C09D11/38 ,  B41J2/175 ,  C09D11/102 ,  C09D11/107 ,  C09D11/324 ,  C09D11/36

Abstract: An ink composition includes a colorant, a co-solvent, a surfactant system, and water. The surfactant system consists of an acid, lithium, and a non-ionic surfactant. The acid is selected from the group consisting of oleic acid, linoleic acid, undecanoic acid, dodecanoic acid, tridecanoic acid, and combinations thereof. The non-ionic surfactant includes a hydrophilic head group to interact with the lithium and a hydrophobic tail to not sterically hinder formation of an anti-evaporative layer to be formed by the surfactant system. The non-ionic surfactant also excludes any ethyleneoxy groups.