公开(公告)号：US20250058565A1

公开(公告)日：2025-02-20

申请号：US18630473

申请日：2024-04-09

Applicant: Samsung Display Co., LTD.

Inventor： Lae Ho KIM ,  Yu KONTA ,  Cheong Wan MIN ,  Jae Bum PAHK ,  Min Woo LEE ,  Tae Ho LEE ,  Jai Hyuk CHOI ,  Myung Soo HUH

IPC: B41J2/175 ,  B41J2/18

Abstract: An inkjet printing apparatus includes: a plurality of inkjet heads configured to discharge ink, a supply storage device configured to supply the ink to the plurality of inkjet heads, a plurality of supply flow paths configured to move the ink from the supply storage device to the plurality of inkjet heads, a plurality of discharge flow paths configured to move the ink from the plurality of inkjet heads to the supply storage device, and a plurality of by-pass lines directly connecting the plurality of supply flow paths with the plurality of discharge flow paths.

公开(公告)号：US20210300026A1

公开(公告)日：2021-09-30

申请号：US17150521

申请日：2021-01-15

Applicant: Samsung Display Co., LTD.

Inventor： Futoshi YOSHIDA ,  Cheong Wan MIN ,  Min A HAN ,  Jae Bum PAHK ,  Jeong Ho YI ,  Heung Cheol JEONG ,  Myung Soo HUH

IPC: B41J2/045 ,  B41J2/175 ,  B41J2/14 ,  B41J2/18

Abstract: An inkjet print apparatus includes a print head discharging ink onto a substrate, the print head including a first heater; a reservoir storing the ink; a first pipe supplying the ink to the reservoir; a second pipe collecting surplus ink; a mixing unit located on the first pipe and mixing the ink; a pump located on the second pipe and pressurizing and supplying the surplus ink to the reservoir; a temperature sensor located between the mixing unit and the print head and sensing a temperature of the ink; and a controller controlling a temperature of at least one of the first heater and the second heater in response to information received from the temperature sensor. The print head includes a heat insulator blocking heat emitted from the first heater between the substrate and the first heater.

公开(公告)号：US20250128519A1

公开(公告)日：2025-04-24

申请号：US18731080

申请日：2024-05-31

Applicant: Samsung Display Co., LTD.

Inventor： Lae Ho KIM ,  Yu KONTA ,  Myung Soo HUH ,  Jae Bum PAHK ,  Jai Hyuk CHOI

IPC: B41J2/185 ,  B41J2/175 ,  B41J2/21 ,  B41J3/407

Abstract: An inkjet printing device includes: an inkjet head; an ink supply device connected to the inkjet head; a purge bath below the inkjet head, and connected to the ink supply device; a first channel connecting the purge bath and the ink supply device; and a densitometer in the first channel.

公开(公告)号：US20240367433A1

公开(公告)日：2024-11-07

申请号：US18396846

申请日：2023-12-27

Applicant: Samsung Display Co., LTD.

Inventor： YU KONTA ,  LAEHO KIM ,  Jae Bum PAHK ,  MINWOO LEE ,  HYEONSEON JEONG ,  Jai Hyuk CHOI

IPC: B41J2/045

Abstract: An ink droplet volume measurement apparatus including an oblique illumination configured to emit light at a first angle to ink droplets deposited onto a substrate, an imaging device configured to obtain planar images of the ink droplets and a shadow of the ink droplets generated by the emitted light and a calculation device configured to calculate a volume of the ink droplets deposited onto the substrate based on the planar images of the ink droplets and the shadow of the ink droplets.