公开(公告)号：US20200310323A1

公开(公告)日：2020-10-01

申请号：US16903052

申请日：2020-06-16

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

Inventor： Youngsu LEE ,  Heungsup PARK ,  Yuntae KIM ,  Eogkyu KIM

IPC: G03G15/00 ,  G03G15/23

Abstract: An image forming apparatus employing an electrophotographic image forming unit and an inkjet image forming unit, thereby being capable of printing an image on each of a front surface and the back surface of a recording medium,

公开(公告)号：US20230051273A1

公开(公告)日：2023-02-16

申请号：US17789562

申请日：2020-12-29

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

Inventor： Heungsup PARK ,  Juntae KIM ,  Haeseog JO

IPC: G03G15/00

Abstract: An image forming apparatus includes an image forming part to form an image on a medium and a photo-finishing part to thermally transfer a coating film covering the image onto the medium.

公开(公告)号：US20220113665A1

公开(公告)日：2022-04-14

申请号：US17557871

申请日：2021-12-21

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

Inventor： Eogkyu KIM ,  Heungsup PARK

IPC: G03G15/00 ,  G03G9/08 ,  G03G9/09

Abstract: An example photodetector for detecting fluorescent toner includes a light emitting unit to emit light to a toner image, and a light receiving unit. The light receiving unit is to detect visible light reflected by the toner image, detect that the toner image includes the fluorescent toner based on the detection of the visible light, the visible light generated by the fluorescent toner and having a predetermined wavelength band different from a wavelength band of the emitted light, and output a signal corresponding to the detection of the fluorescent toner.

公开(公告)号：US20210072691A1

公开(公告)日：2021-03-11

申请号：US16981360

申请日：2019-03-25

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

Inventor： Eogkyu KIM ,  Heungsup PARK

IPC: G03G15/00 ,  G03G9/08 ,  G03G9/09

Abstract: A printer includes an image forming unit to form a toner image on an image receptor by using a toner containing fluorescent additives for generating light in a predefined wavelength band in response to light in an invisible wavelength band, transfer the toner image to a print medium, and fix the toner image on the print medium, a photodetector including a light emitting unit configured to irradiate light in an invisible wavelength band to the toner image accommodated in one of the image receptor and the print medium, and a light receiving unit to detect reflected light from the toner image, and a controller to control a printing operation of the image forming unit, based on a detection signal from the light receiving unit.

公开(公告)号：US20230064017A1

公开(公告)日：2023-03-02

申请号：US17799017

申请日：2021-02-19

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

Inventor： Heungsup PARK ,  Daniel Scott ELLIS ,  Sungho KIM ,  HongKwon LEE ,  DoHyung KIM

IPC: G02F1/16753 ,  G02F1/167 ,  B42D25/333 ,  B42D25/36 ,  C25D13/12

Abstract: Electronic ink paper includes: an image display area comprising a support layer, a conductive layer on the support layer, an ink layer on the conductive layer and to display an image by electrophoresis of pigment particles dispersed in an electrophoretic liquid, and a transparent surface layer to cover the ink layer; and a border to surround the image display area and including at least one edge having a tapered shape that decreases in thickness toward the outside of the border.

公开(公告)号：US20210245529A1

公开(公告)日：2021-08-12

申请号：US16973017

申请日：2018-10-12

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

Inventor： Heungsup PARK ,  Juntae KIM ,  Brett BUCHHOLTZ ,  Lonny MORGAN ,  Dongwoo LEE ,  Richard Lee BRINKLY ,  Kevin LO ,  Youngsu LEE ,  Kihyuk LEE

IPC: B41J11/00 ,  B41F23/04 ,  B41M7/00 ,  B41J13/076

Abstract: A heating roller for a wet ink-based image forming apparatus includes a roller having a contact surface to contact a print medium having wet ink deposited thereon by wet ink-based image forming apparatus. The heating roller conductively heats the print medium and dries and flattens the print medium. The heating roller includes a heating element embedded along the roller. The heating element rotates with the roller as the roller rotates. The heating element generates and conducts heat to the contact surface so as to conductively heat the print medium through the contact surface when the contact surface contacts the print medium.

公开(公告)号：US20210094789A1

公开(公告)日：2021-04-01

申请号：US17044818

申请日：2019-05-14

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

Inventor： Heungsup PARK ,  Haseog JO ,  Taehong KIM ,  Sooncheol JEONG

IPC: B65H31/38 ,  B41J13/10

Abstract: A paddle device for a finisher device to align paper discharged from an imaging apparatus comprises a paddle drive shaft to be rotated by a paddle motor, a rotation body having an installation hole, through which the paddle drive shaft is fitted into the rotation body, and a paddle blade extending from the rotation body and having an end portion that is to contact the paper while the paddle drive shaft is rotated by the paddle drive shaft, to align the paper.