公开(公告)号：US20220073771A1

公开(公告)日：2022-03-10

申请号：US17417410

申请日：2019-08-27

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

Inventor： Milton Neill Jackson

IPC: C09D11/326 ,  C09D11/103 ,  C09D11/36 ,  C09D11/037 ,  C09D11/38 ,  C09D11/106 ,  C08K5/10 ,  C08K5/05 ,  C08L29/14 ,  C08G65/00 ,  C08K5/37

Abstract: A black non-aqueous inkjet ink includes a colorant package including a black pigment; a polymeric dispersant; a phenol-formaldehyde resin; a C2 to C6 ester solvent; and a balance of a C1 to C5 alcohol solvent. The black pigment and the polymeric dispersant are present in a weight ratio ranging from about 1:0.4 to about 1:0.6. The phenol-formaldehyde resin is a C3 to C8 alkyl-modified phenol-formaldehyde resin.

公开(公告)号：US10975256B2

公开(公告)日：2021-04-13

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 ,  B41M5/00 ,  C09D11/033 ,  C09D11/037 ,  C09D11/102 ,  C09D11/38 ,  B41J2/21

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：US10920095B2

公开(公告)日：2021-02-16

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 ,  B41J11/00 ,  B41M5/00 ,  C09D11/033 ,  C09D11/037 ,  C09D11/102 ,  C09D11/38

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：US10974513B2

公开(公告)日：2021-04-13

申请号：US16500301

申请日：2017-07-06

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

Inventor： Jayprakash C. Bhatt ,  Larrie A. Deardurff ,  Milton Neill Jackson

IPC: B41J2/175 ,  C09D11/38 ,  C09D11/40 ,  C09D11/54 ,  B41M5/00 ,  C09D11/033 ,  C09D11/30

Abstract: An example of an ink supply includes an ink chamber containing a liquid ink, a salt chamber containing a salt solution, a separator positioned between the liquid ink and the salt solution, and a release mechanism. The separator completely separates the liquid ink from the salt solution prior to the release mechanism being triggered. The release mechanism has a triggered position and a retracted position. The triggered position causes the separator to at least partially open, and enables the liquid ink and the salt solution to be combined to form a mixture.

公开(公告)号：US20210008890A1

公开(公告)日：2021-01-14

申请号：US16500301

申请日：2017-07-06

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

Inventor： Jayprakash C. Bhatt ,  Larrie A. Deardurff ,  Milton Neill Jackson

IPC: B41J2/175 ,  B41M5/00 ,  C09D11/40 ,  C09D11/38 ,  C09D11/033

Abstract: An example of an ink supply includes an ink chamber containing a liquid ink, a salt chamber containing a salt solution, a separator positioned between the liquid ink and the salt solution, and a release mechanism. The separator completely separates the liquid ink from the salt solution prior to the release mechanism being triggered. The release mechanism has a triggered position and a retracted position. The triggered position causes the separator to at least partially open, and enables the liquid ink and the salt solution to be combined to form a mixture.

公开(公告)号：US10723123B2

公开(公告)日：2020-07-28

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: B41J2/01 ,  C09D11/102 ,  C09D11/38 ,  C09D11/03 ,  C09D11/107 ,  C09D11/324 ,  B41M5/00 ,  C09D11/033 ,  C09D11/037 ,  C09D11/326

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.