公开(公告)号：US20190091766A1

公开(公告)日：2019-03-28

申请号：US16080879

申请日：2018-02-23

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

Inventor： Vladek KASPERCHIK ,  David Michael INGLE ,  Cory J. RUUD

IPC: B22F3/00 ,  B22F3/10 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00

Abstract: Described herein are compositions, methods, and systems for printing metal three-dimensional objects. In an example, described is a method of printing a three-dimensional object comprising: (i) depositing a metal powder build material, wherein the metal powder build material has an average particle size of from about 10 μm to about 250 μm; (ii) selectively applying a binder fluid on at least a portion of the metal powder build material, wherein the binder fluid comprises an aqueous liquid vehicle and latex polymer particles dispersed in the aqueous liquid vehicle; (iii) heating the selectively applied binder fluid on the metal powder build material to a temperature of from about 40° C. to about 180° C.; and (iv) repeating (i), (ii), and (iii) at least one time to form the three-dimensional object.

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.