公开(公告)号：US20200056059A1

公开(公告)日：2020-02-20

申请号：US16499373

申请日：2017-09-14

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

Inventor： Milton Neill JACKSON ,  Jayprakash C. BHATT ,  Larrie A. DEARDURFF

IPC: C09D11/322 ,  C09D11/38 ,  C09D11/037 ,  C09D11/033 ,  C09D11/102 ,  B41M5/00

Abstract: The present disclosure is drawn to ink compositions including an aqueous liquid vehicle, from 1 wt % to 9 wt % pigment dispersed in the aqueous liquid vehicle by an ionic polymeric dispersant associated with pigment, from 0.5 wt % to 5 wt % non-ionic polymeric binder having a weight average molecular weight from 400 Mw to 20,000 Mw, and from 0.1 wt % to 1.5 wt % monovalent salt.

公开(公告)号：US20200017701A1

公开(公告)日：2020-01-16

申请号：US16497027

申请日：2017-07-12

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

Inventor： Milton Neill JACKSON ,  Jayprakash C. BHATT ,  Larrie DEARDURFF

IPC: C09D11/322 ,  C09D11/38 ,  C09D11/033 ,  C09D11/037 ,  C09D11/102 ,  B41J11/00 ,  B41M5/00

Abstract: The present disclosure is drawn to ink compositions including an aqueous liquid vehicle, from 1 wt % to 9 wt % pigment dispersed in the aqueous liquid vehicle by a polymer dispersant associated with pigment, from 0.5 wt % to 5 wt % polymeric binder particles having an average particle size from 25 nm to 500 nm and a D10 particle size of 20 nm or more, and from 0.1 wt % to 1.5 wt % monovalent salt.

公开(公告)号：US20190153252A1

公开(公告)日：2019-05-23

申请号：US16308902

申请日：2016-10-06

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

Inventor： Larrie DEARDUFF ,  Jayprakash C. BHATT ,  Milton Neill JACKSON

IPC: C09D11/322 ,  C09D11/38 ,  G01N29/028

Abstract: The present disclosure is drawn to ink compositions including an aqueous liquid vehicle, from 2 wt % to 7 wt % self-dispersed pigment dispersed in the aqueous liquid vehicle, and from 0.1 wt % to 1 wt % monovalent salt. The self-dispersed pigment to monovalent salt weight ratio in the ink composition can be from 3:1 to 35:1.

公开(公告)号：US20190249023A1

公开(公告)日：2019-08-15

申请号：US16308842

申请日：2017-09-15

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

Inventor： Larrie Deardurff ,  Jayprakash C. BHATT ,  Milton Neill JACKSON

IPC: C09D11/326 ,  C09D11/033 ,  C09D11/037 ,  C09D11/102 ,  C09D11/38 ,  B41M5/00 ,  B41J2/01

Abstract: The present disclosure is drawn to an ink composition including an aqueous liquid vehicle, from 2 wt % to 7 wt % self-dispersed pigment dispersed in the aqueous liquid vehicle, and from 0.5 wt % to 5 wt % acidic polymeric binder particles having an acid number from 30 to 200 and a particle size from 1 nm to 100 nm dispersed in the aqueous liquid vehicle. The ink composition can also include from 0.1 wt % to 0.75 wt % monovalent salt solubilized in the aqueous liquid vehicle. The self-dispersed pigment to monovalent salt weight ratio in the ink composition can be from 3:1 to 50:1, for example.

公开(公告)号：US20170183522A1

公开(公告)日：2017-06-29

申请号：US15308708

申请日：2014-06-04

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

Inventor： Sterling CHAFFINS, JR. ,  Kevin P. DEKAM ,  Jayprakash C. BHATT ,  Larrie DEARDURFF ,  Cory J. RUUD ,  Matthew THORNBERRY

IPC: C09D11/322 ,  B41J2/01 ,  C09D11/38

CPC classification number: C09D11/322 ,  B41J2/01 ,  C09D11/38

Abstract: The present disclosure is drawn to a pigment-based inkjet ink and methods. The inkjet ink includes water; from 2 wt % to 9 wt % pigment solids; from 0.05 wt % to 2 wt % of an acetylenic diol non-ionic surfactant; from 0.05 wt % to 2 wt % of a second surfactant. The second surfactant can be a polysorbate having at least 50% lipophilic oleic acid groups and having an HLB value of less than 15, or a C12-C18 polyoxyethylene glycol ether having an ethylene oxide number less than 20, or a perfluoropolyether including a polyethylene glycol primary alcohol or diol. The inkjet ink also includes from 5 wt % to 50 wt % of an organic solvent system comprising triethylene glycol and a cyclic amide.

公开(公告)号：US20210039401A1

公开(公告)日：2021-02-11

申请号：US16607823

申请日：2018-04-13

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

Inventor： Jayprakash C. BHATT ,  Michael W. CUMBIE

IPC: B41J2/325 ,  B41J31/02

Abstract: An example of an imaging medium includes an image-receiving substrate, a donor ribbon attached to the image-receiving substrate, and a registration mark. The donor ribbon includes a donor ribbon substrate, a release layer disposed on the donor ribbon substrate, and a color layer disposed on the release layer. The color layer includes a repeated pattern. A repeat of the pattern includes at least adjacent color stripes including a cyan stripe, a magenta stripe, and a yellow stripe, or a grid of four color sections including i) a colored section selected from the group consisting of black, cyan, light cyan, yellow, magenta, and light magenta, ii) a cyan section, iii) a magenta section, and iv) a yellow section. The color layer is in contact with the image-receiving substrate.

公开(公告)号：US20190153251A1

公开(公告)日：2019-05-23

申请号：US16308601

申请日：2016-10-06

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

Inventor： Jayprakash C. BHATT ,  Milton Neill JACKSON ,  Larrie DEARDURFF

IPC: C09D11/322 ,  C09D11/38 ,  G01N29/02

Abstract: The present disclosure is drawn to ink compositions including an aqueous liquid vehicle, from 3 wt % to 9 wt % pigment dispersed in the aqueous liquid vehicle by a polymer dispersant associated with pigment, and from 0.25 wt % to 1.2 wt % monovalent salt. The pigment to monovalent salt weight ratio in the ink composition can be from 5:1 to 25:1.