公开(公告)号：US09678454B2

公开(公告)日：2017-06-13

申请号：US14916413

申请日：2013-09-06

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

Inventor： Omer Gila ,  Seongsik Chang ,  Michael H. Lee

IPC: G03G15/02 ,  G03G15/10 ,  G03G15/043

CPC classification number: G03G15/0258 ,  G03G15/02 ,  G03G15/0216 ,  G03G15/0266 ,  G03G15/043 ,  G03G15/10 ,  G03G15/11

Abstract: Techniques for liquid electrography printing are described herein. In at least some examples herein, a liquid electrographic printer includes a charging element for charging a photo imaging plate (PIP). A light source irradiates light onto the charge element. The irradiated light is to heat the charge element to a selected temperature.

公开(公告)号：US20210223711A1

公开(公告)日：2021-07-22

申请号：US17256340

申请日：2018-10-11

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

Inventor： Seongsik Chang ,  Omer Gila ,  Daniel Espinosa ,  Anthony W. McLennan ,  Eyal Lovton ,  Asael Degany

IPC: G03G15/02 ,  G03G15/00

Abstract: A device includes a charge roller and a control portion. The charge roller is removably insertable to be in charge-transferring relation to, and spaced apart by a first air gap from, a photoconductive imaging portion of an electrophotographic printer. The control portion is to determine a size of the first air gap based on determination of a charging threshold voltage associated with the charge roller.

公开(公告)号：US20210205892A1

公开(公告)日：2021-07-08

申请号：US17043101

申请日：2018-06-08

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

Inventor： Seongsik Chang

IPC: B22F12/41 ,  B33Y10/00 ,  B33Y30/00 ,  B22F10/28

Abstract: A printing device that includes a build platform to hold an amount of build material thereon and a coherent light source to selectively fuse the build material through heat produced by the coherent light source at the surface of the build material wherein the coherent light source flood radiates the entirety of the build platform.

公开(公告)号：US10254676B2

公开(公告)日：2019-04-09

申请号：US15243311

申请日：2016-08-22

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

Inventor： Seongsik Chang ,  Thomas Anthony ,  Michael H. Lee ,  Omer Gila ,  Anthony William McLennan

IPC: G03G15/02

Abstract: A charge roller includes a body having a metal external surface and an inorganic outer resistive coating.

公开(公告)号：US20180321618A1

公开(公告)日：2018-11-08

申请号：US15773962

申请日：2016-01-27

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

Inventor： Guang Jin Li ,  Stanley J. Kozmiski ,  Seongsik Chang ,  Daniel Tanchangco ,  David Sabo ,  Thomas Anthony ,  Omer Gila

IPC: G03G15/10 ,  G03G15/08 ,  G03G15/02 ,  G03G13/10 ,  C08L75/04

CPC classification number: G03G15/10 ,  C08L75/04 ,  G03G13/10 ,  G03G15/0233 ,  G03G15/0818 ,  G03G2215/0861

Abstract: The present disclosure relates to a liquid electrophotographic ink developer unit. The unit comprises a developer roller, and a secondary roller that co-operates with the developer roller. The developer roller is formed of a material having a specific resistivity of less than 1×106 Ω·cm. The secondary roller is formed of a material having a specific resistivity of 1×104 to 1×109 Ω·cm.

公开(公告)号：US20180259870A1

公开(公告)日：2018-09-13

申请号：US15973980

申请日：2018-05-08

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

Inventor： Thomas Anthony ,  Seongsik Chang ,  Omer Gila

IPC: G03G15/02 ,  G03G15/08 ,  B41F31/26

CPC classification number: G03G15/0233 ,  B41F31/26 ,  G03G15/0216 ,  G03G15/0258 ,  G03G15/0808 ,  G03G15/0817 ,  G03G15/0818

Abstract: An inner resistive film is applied to a conductive substrate. Ductile particles are disposed substantially uniformly throughout the inner resistive film. An outer resistive film is applied to the inner resistive film.

公开(公告)号：US09977360B2

公开(公告)日：2018-05-22

申请号：US15500911

申请日：2014-07-31

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

Inventor： Thomas Anthony ,  Seongsik Chang ,  Omer Gila

IPC: G03G15/02 ,  B41F31/26 ,  G03G15/08

CPC classification number: G03G15/0233 ,  B41F31/26 ,  G03G15/0216 ,  G03G15/0258 ,  G03G15/0808 ,  G03G15/0817 ,  G03G15/0818

Abstract: An inner resistive film is applied to a conductive substrate. Ductile particles are disposed substantially uniformly throughout the inner resistive film. An outer resistive film is applied to the inner resistive film.

公开(公告)号：US09846381B2

公开(公告)日：2017-12-19

申请号：US15500907

申请日：2014-07-31

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

Inventor： Thomas Anthony ,  Seongsik Chang

IPC: G03G15/02 ,  C23C16/44

CPC classification number: G03G15/0233 ,  C23C16/44

Abstract: A resistive film is applied to a conductive substrate. Ductile particles are disposed substantially uniformly throughout the resistive film. Brittleness of the resistive film is thereby reduced.

公开(公告)号：US20170235246A1

公开(公告)日：2017-08-17

申请号：US15500907

申请日：2014-07-31

Applicant: Thomas ANTHONY ,  Seongsik CHANG ,  Hewlett-Packard Development Company, L.P.

Inventor： Thomas Anthony ,  Seongsik Chang

IPC: G03G15/02 ,  C23C16/44

CPC classification number: G03G15/0233 ,  C23C16/44

Abstract: A resistive film is applied to a conductive substrate. Ductile particles are disposed substantially uniformly throughout the resistive film. Brittleness of the resistive film is thereby reduced.

公开(公告)号：US20170045838A1

公开(公告)日：2017-02-16

申请号：US15243311

申请日：2016-08-22

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

Inventor： Seongsik Chang ,  Thomas Anthony ,  Michael H. Lee ,  Omer Gila ,  Anthony William McLennan

IPC: G03G15/02

CPC classification number: G03G15/0233

Abstract: A charge roller includes a body having a metal external surface and an inorganic outer resistive coating.

Abstract translation: 充电辊包括具有金属外表面的主体和无机外阻层。