公开(公告)号：US20180354191A1

公开(公告)日：2018-12-13

申请号：US15569599

申请日：2015-07-23

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

Inventor： Krzysztof Nauka ,  Howard S. Tom ,  Kristopher J. Erickson ,  Lihua Zhao ,  Sivapackia Ganapathiappan

IPC: B29C64/165 ,  B29C64/264 ,  B29C64/112 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y70/00 ,  B29C64/218 ,  B29C35/08

CPC classification number: B29C64/165 ,  B29C35/0805 ,  B29C64/112 ,  B29C64/153 ,  B29C64/194 ,  B29C64/218 ,  B29C64/264 ,  B29C64/393 ,  B29C2035/0822 ,  B29K2077/00 ,  B29K2105/251 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y70/00

Abstract: A three-dimensional (3D) printing method includes applying a build material composition having a polymer particle and a radiation absorbing additive mixed with the polymer particle, the radiation absorbing additive being selected from the group consisting of inorganic near-infrared absorbers, organic near-infrared absorbers, and combinations thereof. The build material composition is preheated to a temperature below the melting temperature of the polymer particle by exposing the build material composition to radiation, the radiation absorbing additive increasing radiation absorption and accelerating the pre-heating of the build material composition. A fusing agent is selectively applied on at least a portion of the build material composition. The method further includes exposing the build material composition to radiation, whereby at least the polymer particle in the at least the portion of the build material composition in contact with the fusing agent at least partially fuses.

公开(公告)号：US20160221836A1

公开(公告)日：2016-08-04

申请号：US14908009

申请日：2013-09-27

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

Inventor： Yan Zhao ,  Howard S. Tom ,  Hou T. Ng

IPC: C01G23/053 ,  C09D11/322 ,  C09D17/00

CPC classification number: C01G23/053 ,  C01G23/0532 ,  C01P2004/01 ,  C01P2004/34 ,  C01P2004/62 ,  C01P2006/11 ,  C08K2003/2241 ,  C09C1/00 ,  C09C1/3676 ,  C09D5/028 ,  C09D7/61 ,  C09D11/023 ,  C09D11/102 ,  C09D11/322 ,  C09D17/00 ,  C09D17/008

Abstract: A white pigment dispersion includes 10 to 60 wt % of low effective density TiO2, 1 to 40 wt % of a latex, and the balance a dispersing medium. Inks using the low effective density TiO2 and methods for preparing the low effective density TiO2 are also disclosed.

Abstract translation: 白色颜料分散体包含10至60重量％的低有效密度TiO 2，1至40重量％的胶乳，余量为分散介质。 还公开了使用低有效密度TiO 2的油墨和用于制备低有效密度TiO 2的方法。

公开(公告)号：US20160102217A1

公开(公告)日：2016-04-14

申请号：US14892560

申请日：2013-05-30

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

Inventor： Hou T. Ng ,  Howard S. Tom

IPC: C09D11/322 ,  C09D121/02 ,  C09D11/106

CPC classification number: C09D11/322 ,  B41J2/211 ,  B41J2/2114 ,  B41J2/2117 ,  C08K3/26 ,  C08K2003/265 ,  C09D11/106 ,  C09D11/38 ,  C09D121/02

Abstract: A white inkjet ink includes an anionic surfactant having a molecular weight less than 10,000, a white pigment, a latex particle, and a balance of water. The white pigment has i) a density less than 3 g/cm3, and ii) a substantially constant particle size over a predetermined time period. The substantially constant particle size ranges from about 100 nm to about 300 nm.

Abstract translation: 白色喷墨油墨包括分子量小于10,000的阴离子表面活性剂，白色颜料，胶乳颗粒和余量的水。 白色颜料具有i）小于3g / cm 3的密度，和ii）在预定时间段内基本上恒定的粒径。 基本恒定的粒度范围为约100nm至约300nm。

公开(公告)号：US20140098164A1

公开(公告)日：2014-04-10

申请号：US13645143

申请日：2012-10-04

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

Inventor： Hou T. Ng ,  Sivapackia Ganapathiappan ,  Howard S. Tom

IPC: B41J2/045 ,  C09D11/10

CPC classification number: B41J2/2107 ,  B41J2/0057 ,  B41J11/002 ,  C09D11/106 ,  C09D11/30 ,  C09D11/36

Abstract: An inkjet ink includes a non-polar carrier, a colorant dispersed in the non-polar carrier, a dispersant, and non-swellable latex particles of a cross-linked polymer dispersed in the non-polar carrier. The colorant is chosen from a pigment, a dye, or a combination of a pigment and a dye. The cross-linked polymer consists of: an acrylic monomer having a molecular weight less than 1000, a vinylic monomer having a molecular weight of less than 1000, or combinations thereof.

Abstract translation: 喷墨油墨包括非极性载体，分散在非极性载体中的着色剂，分散剂和分散在非极性载体中的交联聚合物的不溶胀胶乳颗粒。 着色剂选自颜料，染料或颜料和染料的组合。 交联聚合物由以下组成：分子量小于1000的丙烯酸单体，分子量小于1000的乙烯基单体或其组合。