公开(公告)号：US20230094682A1

公开(公告)日：2023-03-30

申请号：US17645664

申请日：2021-12-22

Applicant: ENJET CO. LTD.

Inventor： Do Young Byun ,  Vu Dat Nguyen ,  Kwangsun Jeon

IPC: B41J2/125 ,  B41J2/06 ,  B41J2/14

Abstract: The present disclosure relates to a printing apparatus with a plurality of nozzle heads and method for aligning a plurality of nozzle tips. The printing apparatus with a plurality of nozzle heads according to the present disclosure includes a first nozzle head having a first nozzle tip for discharging ink and a first moving part for moving the first nozzle tip, and disposed at one side of a working area on a substrate; a second nozzle head having a second nozzle tip for discharging ink and a second moving part for moving the second nozzle tip, and disposed at the other side of the working area on the substrate; and a first camera disposed above the substrate to observe the first nozzle tip and the second nozzle tip at the same time.

公开(公告)号：US12172438B2

公开(公告)日：2024-12-24

申请号：US18521721

申请日：2023-11-28

Applicant: ENJET CO. LTD.

Inventor： Do Young Byun ,  Vu Dat Nguyen ,  Kwangsun Jeon

IPC: B41J2/125 ,  B41J2/06 ,  B41J2/14

Abstract: The present disclosure relates to a method for aligning a plurality of nozzle tips, the method comprising: a first nozzle aligning step of setting a reference position of a first nozzle tip for discharging ink within a working area through an image of a first camera observing the working area above a substrate and a second camera observing the working area in an inclined direction; a second nozzle aligning step of setting a reference position of a second nozzle tip for discharging ink within the working area through the image of the first camera and the second camera; a step of detecting a position of a substrate based on the image of the second camera; and a printing preparation step of positioning the first nozzle tip and the second nozzle tip to a printing position on the substrate.