公开(公告)号：EP3250651A4

公开(公告)日：2018-02-07

申请号：EP15880469

申请日：2015-01-30

Applicant: HEWLETT-PACKARD DEV COMPANY L P

Inventor： YEN MAX ,  INGLE DAVID MICHAEL

IPC: C09D11/30 ,  C09D11/322 ,  C09D11/326

CPC classification number: C09D11/326 ,  C09D11/322

Abstract: The present disclosure is drawn to aqueous pigment co-dispersions. The co-dispersions include self-dispersed pigment with a chemically modified surface; released surface moieties from the self-dispersing pigment; pigment powder having the released surface moieties associated with pigment powder surfaces; polymeric dispersant; and water.

公开(公告)号：EP3097159A4

公开(公告)日：2017-01-04

申请号：EP14879759

申请日：2014-01-22

Applicant: HEWLETT-PACKARD DEV COMPANY L P

Inventor： DOUMAUX HOWARD ,  YEN MAX ,  BUTLER THOMAS W

IPC: C09D11/322 ,  C09D11/102 ,  C09D11/38

CPC classification number: C09D11/38 ,  C09D11/033 ,  C09D11/037 ,  C09D11/10 ,  C09D11/102 ,  C09D11/105 ,  C09D11/322

Abstract: An ink composition is described herein. In one example, an ink includes at least one pigment, at least one dispersant, and at least one durable polymer in a water-based dispersion medium including at least one hydrophilic solvent. The dispersant is present at from about 0.05 wt % to about 15 wt % of the ink composition. Further, the ink composition includes at least one dispersion additive.