Invention Grant
- Patent Title: Metallic pigment particles
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Application No.: US16064858Application Date: 2016-03-04
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Publication No.: US11236248B2Publication Date: 2022-02-01
- Inventor: Olga Kagan , Yaron Grinwald , Rada Nuchimov , Shiran Zabar , Eyal Negreanu , Guy Nesher
- Applicant: HP Indigo B.V.
- Applicant Address: NL Amstelveen
- Assignee: HP Indigo B.V.
- Current Assignee: HP Indigo B.V.
- Current Assignee Address: NL Amstelveen
- Agency: Thorpe North & Western LLP
- International Application: PCT/EP2016/054698 WO 20160304
- International Announcement: WO2017/148537 WO 20170908
- Main IPC: G03G9/08
- IPC: G03G9/08 ; G03G9/12 ; G03G9/13 ; G03G9/135 ; C09D11/52 ; H05K1/09 ; C09D11/037 ; C09D11/107

Abstract:
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.
Public/Granted literature
- US20180371279A1 METALLIC PIGMENT PARTICLES Public/Granted day:2018-12-27
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