公开(公告)号：US20200172751A1

公开(公告)日：2020-06-04

申请号：US16620333

申请日：2017-10-23

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

Inventor： Dana ALGAIER ,  Thomas W. BUTLER ,  Audrey DICKINSON

IPC: C09D11/36 ,  C09D11/326 ,  B41M5/00

Abstract: The present disclosure is drawn to non-aqueous ink compositions. The non-aqueous ink compositions can include from 55 wt % to 95 wt % of a mono-alcohol solvent, from 3 wt % to 15 wt % of a polymeric binder, and from 2 wt % to 7 wt % carbon black pigment. The mono-alcohol solvent can include ethanol and C3-C6 mono-alcohol having an ethanol to C3-C6 mono-alcohol weight ratio of 1:1 to 10:1. The polymeric can have a weight average molecular weight ranging from 1,500 Mw to 15,000 Mw. The carbon black pigment can be dispersed by a polymeric dispersing agent associated with a surface of the carbon black pigment.

公开(公告)号：US20180030295A1

公开(公告)日：2018-02-01

申请号：US15544600

申请日：2015-04-27

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

Inventor： Paul Joseph BRUINSMA ,  Vladek KASPERCHIK ,  Thomas W. BUTLER

IPC: C09D11/322 ,  B41J2/21 ,  B41J11/00 ,  C09D11/54 ,  B41M5/50

CPC classification number: C09D11/322 ,  B41J2/2114 ,  B41J11/0015 ,  B41M5/0017 ,  B41M5/0047 ,  B41M5/0064 ,  B41M5/502 ,  B41M7/00 ,  C09D11/106 ,  C09D11/40 ,  C09D11/54

Abstract: The present disclosure is drawn to fluid sets for inkjet imaging and can comprise a white ink and a fixer fluid. The white ink can include an aqueous ink vehicle, from 5 wt % to 50 wt % of a white metal oxide pigment, and from 0.02 wt % to 2 wt % of an anionic low molecular weight polymer. The white metal oxide pigment can have an average particulate size from 100 nm to 2,000 nm, and can be dispersed by a non-ionic or predominantly non-ionic dispersant having an acid number not higher than 100 mg KOH/g based on dry polymer weight. The anionic low molecular weight polymer can have a weight average molecular weight of 3,000 Mw to 50,000 Mw and an acid number higher than 100 mg KOH/g based on dry polymer weight. The fixer fluid can include an aqueous fixer vehicle and from 0.1 wt % to 25 wt % cationic polymer.

公开(公告)号：US20210062025A1

公开(公告)日：2021-03-04

申请号：US16497520

申请日：2017-06-09

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

Inventor： Natalie Harvey ,  Jennifer Wu ,  Thomas W. BUTLER ,  Vladimir JAKUBEK

IPC: C09D11/324 ,  C09D11/102 ,  B41M5/00 ,  B41J2/175

Abstract: The present disclosure is drawn to an inkjet printing system including an ink composition and a microfluidic ejection assembly. The ink composition can include carbon black pigment, from 50 wt % to 80 wt % water, from 10 wt % to 40 wt % of an organic solvent system, and from 0.5 wt % to 6 wt % polyurethane. The microfluidic ejection assembly can include a drop generator for externally ejecting the ink composition, and a fluid pump for internally inducing microfluidic recirculation flow of the ink composition into the drop generator.

公开(公告)号：US20170355867A1

公开(公告)日：2017-12-14

申请号：US15544711

申请日：2015-05-29

Applicant: Hewlett-Packard Development Company L.P.

Inventor： Vladek KASPERCHIK ,  Paul Joseph BRUINSMA ,  Thomas W. BUTLER

IPC: C09D11/322 ,  C09D11/107 ,  C09D11/033 ,  C09D11/54

CPC classification number: C09D11/322 ,  B41M5/0017 ,  B41M5/0047 ,  B41M5/0064 ,  C09D11/033 ,  C09D11/106 ,  C09D11/107 ,  C09D11/326 ,  C09D11/38 ,  C09D11/54

Abstract: The present disclosure provides a white ink including an aqueous ink vehicle; from 5 wt % to 50 wt % of a white metal oxide pigment having an average particulate size from 75 nm to 2,000 nm and a refractive index of 1.8 to 2.8; and from 0.1 wt % to 15 wt % of fumed oxide particulates having a tertiary agglomerated average particulate size from 20 nm to 750 nm and a refractive index of 1.1 to 1.6. The white ink further includes a polymeric dispersant associated with a surface of the white metal oxide pigment.