公开(公告)号：US20240036490A1

公开(公告)日：2024-02-01

申请号：US18039908

申请日：2020-12-15

申请人： Hewlett-Packard Development Company, L.P.

发明人： Doron GUROVICH ,  Vladislav KAPLOUN ,  Albert TEISHEV ,  Emad MASOUD

IPC分类号： G03G9/135 ,  G03G9/08 ,  G03G15/10

CPC分类号： G03G9/1355 ,  G03G9/0804 ,  G03G15/10

摘要： Described herein is a method of producing a liquid electrophotographic ink composition comprising combining a pigment with a charge director in a carrier liquid to produce a pigment dispersion; and combining a thermoplastic resin with the pigment dispersion to produce a liquid electrophotographic ink composition; wherein the charge director comprises a metal salt of a sulfonic acid. Also described herein is a method of printing the liquid electrophotographic ink composition and a printing set comprising the liquid electrophotographic ink composition.

公开(公告)号：US20220206408A1

公开(公告)日：2022-06-30

申请号：US17429649

申请日：2019-07-26

申请人： Hewlett-Packard Development Company, L.P.

发明人： Doron SCHLUMM ,  Mark SANDLER ,  Assaf PINES ,  Gilad NOY ,  Orel Yosef MIZRAHI

IPC分类号： G03G9/135 ,  G03G9/125 ,  G03G9/08 ,  G03G9/087

摘要： Herein is disclosed a method for concentrating a liquid electrostatic ink composition, the method comprising replacing a first liquid carrier in a liquid electrostatic ink composition with a second liquid carrier, wherein the liquid electrostatic ink composition comprises chargeable toner particles dispersed in the first liquid carrier; and removing the second liquid carrier to produce a concentrated liquid electrostatic ink composition, wherein the second liquid carrier has a boiling point below 100° C. and wherein the second liquid carrier has a lower boiling point than the first liquid carrier. Also disclosed herein is a concentrated liquid electrostatic ink composition producible according to the method.

公开(公告)号：US11326067B2

公开(公告)日：2022-05-10

申请号：US16476201

申请日：2017-04-19

申请人： HP Indigo B.V.

发明人： Inna Tzomik ,  Daniel Skvirsky ,  Faina Kogan ,  Alexander Stolov

IPC分类号： C09D11/101 ,  G03G9/135 ,  G03G9/087

摘要： Herein is described a method of providing a printed label. The method comprises: providing a printed label substrate having disposed thereon an electrostatically printed ink; applying a radiation curable overcoat composition to the printed ink, wherein the radiation curable overcoat composition comprises: radiation curable monomers and/or oligomers; a photoinitiator; and an organosilane having at least one hydrolysable group. Printed labels and an ink and overcoat set are also described herein.

公开(公告)号：US11236248B2

公开(公告)日：2022-02-01

申请号：US16064858

申请日：2016-03-04

申请人： HP Indigo B.V.

发明人： Olga Kagan ,  Yaron Grinwald ,  Rada Nuchimov ,  Shiran Zabar ,  Eyal Negreanu ,  Guy Nesher

IPC分类号： G03G9/08 ,  G03G9/12 ,  G03G9/13 ,  G03G9/135 ,  C09D11/52 ,  H05K1/09 ,  C09D11/037 ,  C09D11/107

摘要： A method for producing a conductive liquid electrophotographic ink composition is described, the method comprising: heating a polymer resin in a carrier fluid to dissolve the polymer resin; adding conductive metallic pigment particles to be coated to the carrier fluid; cooling the carrier fluid to effect precipitation of the polymer resin from the carrier fluid such that a coating of the resin is at least partially formed on the conductive metallic pigment particles; reheating the suspension of partially coated conductive metallic pigment particles in the carrier fluid; and cooling the carrier fluid at a controlled rate to effect precipitation of the polymer resin from the carrier fluid such that a coating of the resin is formed on the conductive metallic pigment particles, thereby producing the conductive liquid electrophotographic ink composition.

公开(公告)号：US10983452B2

公开(公告)日：2021-04-20

申请号：US14443949

申请日：2012-11-20

申请人： HP Indigo B.V.

发明人： Fernanda Orlik ,  Igor Shotri ,  Albert Teishev

IPC分类号： G03G9/12 ,  G03G13/14 ,  G03G13/10 ,  G03G13/22 ,  G03G7/00 ,  G03G9/135 ,  C09D11/03

摘要： Here is described a method of printing on a plastic substrate, the method comprising: providing an electrostatic ink composition comprising a carrier liquid, and particles comprising a resin, and a slip agent dispersed in the carrier liquid; forming a latent electrostatic image on a surface; contacting the surface with the electrostatic ink composition, such that at least some of the particles and the slip agent are transferred to the surface to form a developed toner image on the surface; and transferring the toner image to the plastic substrate. Electrostatic ink compositions and plastic substrates are also disclosed.

公开(公告)号：US20200272068A1

公开(公告)日：2020-08-27

申请号：US16794925

申请日：2020-02-19

申请人： CANON KABUSHIKI KAISHA

发明人： Kouichirou Ochi ,  Yuzo Tokunaga ,  Tomoyo Miyakai ,  Akifumi Matsubara ,  Takashi Hirasa ,  Hayato Ida ,  Yasutaka Akashi

IPC分类号： G03G9/135 ,  G03G9/125 ,  G03G9/13 ,  G03G9/08

摘要： A liquid developer containing a liquid carrier and a toner particle that is insoluble in the liquid carrier, wherein a particular substructure is bonded through a covalent bond to a surface of the toner particle, and a method of producing a liquid developer containing a liquid carrier and a toner particle that is insoluble in the liquid carrier, the method comprising a step (I) of covalently bonding, to a surface of the toner particle, a compound having a particular substructure.

公开(公告)号：US10591840B2

公开(公告)日：2020-03-17

申请号：US16082372

申请日：2016-04-06

申请人： HP Indigo B.V.

发明人： Michael Kokotov ,  Gregory Katz ,  Yaron Grinwald ,  Pavel Sandik

IPC分类号： G03G9/12 ,  G03G9/13 ,  G03G9/135

摘要： A liquid electrophotographic (LEP) ink can include a liquid ink vehicle, a conductive toner including a conductive pigment and a polymeric binder, and a charge director. The liquid electrophotographic ink can have a conductivity of from 150 to 2000 picoSiemens.

公开(公告)号：US10591839B2

公开(公告)日：2020-03-17

申请号：US16094439

申请日：2016-07-28

申请人： HP Indigo B.V.

发明人： Gil Bar-Haim ,  Shiran Zabar ,  Danny Feldman ,  Alina Grishman ,  Albert Teishev

IPC分类号： G03G9/12 ,  C09D11/10 ,  G03G9/135 ,  C09D11/03 ,  G03G9/08 ,  C09D11/037

摘要： Herein is described a liquid electrostatic ink composition comprising a carrier liquid, a resin, a colorant selected from a magenta colorant, a cyan colorant and a black colorant, an amine-containing basic dispersant having a total base number (TBN) in the range of about 10 to about 65 mgKOH/g material, the amine-containing basic dispersant present in an amount from about 5 wt. % to about 40 wt. % by total weight of colorant.

公开(公告)号：US10545424B2

公开(公告)日：2020-01-28

申请号：US16140615

申请日：2018-09-25

申请人： CANON KABUSHIKI KAISHA

发明人： Waka Hasegawa ,  Ryo Natori ,  Ayano Mashida ,  Junji Ito ,  Yasuhiro Aichi ,  Jun Shirakawa

IPC分类号： G03G9/00 ,  G03G9/13 ,  G03G9/125 ,  G03G9/12 ,  G03G9/135

摘要： A liquid developer comprising a carrier liquid, a toner particle insoluble in the carrier liquid, and a polymer having a primary amino group and soluble in the carrier liquid, wherein the toner particle comprises a polyester resin having an acidic group, an acid value of the polyester resin is at least 5 mg KOH/g, a pKa of the acidic group is not more than 3.4, and the polymer having a primary amino group has a primary amino group at a position other than the end of a main chain of the polymer, and method of producing thereof.

公开(公告)号：US10545419B2

公开(公告)日：2020-01-28

申请号：US15565640

申请日：2015-07-17

申请人： HP Indigo B.V.

发明人： Gil Bar-Haim ,  Tal Rosenthal ,  Albert Teishev ,  Marc Klein

IPC分类号： G03G9/13 ,  G03G9/08 ,  C09D11/52 ,  C09D11/10 ,  C09D11/106 ,  G03G9/135 ,  C09D11/03 ,  C09D11/037 ,  C09D11/107 ,  G03G9/12

摘要： Herein is disclosed magenta liquid electrostatic ink compositions. In some examples, the electrostatic ink compositions comprise a magenta pigment, a basic dispersant, a resin comprising a polymer having acidic side groups, a carrier liquid and a charge director, wherein the dispersant comprises a compound comprising a succinimide group linked to a primary, secondary or tertiary amine.