公开(公告)号：US11791187B2

公开(公告)日：2023-10-17

申请号：US17082777

申请日：2020-10-28

Applicant: SEMES CO., LTD.

Inventor： Gon Kim ,  Dong Hwan Kim ,  Sang Hoon Baek ,  Jung Wan Hong ,  Young In Kim

IPC: H01L21/67 ,  H01L21/677 ,  B41J2/01 ,  B41J2/44 ,  G06F3/12 ,  B41J3/407 ,  B41J2/045 ,  B41J23/02 ,  B41J29/393

CPC classification number: H01L21/67733 ,  B41J2/01 ,  B41J2/04541 ,  B41J2/04586 ,  B41J2/442 ,  B41J3/4073 ,  B41J23/02 ,  B41J29/393 ,  G06F3/1285 ,  H01L21/67 ,  H01L21/67259 ,  H01L21/67282 ,  H01L21/67706 ,  H01L21/67724

Abstract: A mark printing device includes a driving unit driving along a driving rail of an overhead hoist transport, a printing unit being configured to print on the driving rail a mark for guiding a motion of a vehicle, a data processing unit receiving design data including design information of the driving rail and first information on a position and type of the mark from a server, an encoder unit being configured to calculate a rotation amount of a servo motor provided in the driving unit to detect a current position of the driving unit and a driving distance of the driving unit, and a control unit being configured to control the driving unit and the printing unit to print the mark on the driving rail by using the design data and second information on the current position and the driving distance of the driving unit.

公开(公告)号：US10751990B2

公开(公告)日：2020-08-25

申请号：US16503427

申请日：2019-07-03

Applicant: SEMES CO., LTD.

Inventor： Keun Hwa Yang ,  Soon Yong Jeong ,  Jung Wan Hong ,  Gon Kim

IPC: B41J2/045 ,  G01N21/31 ,  B41J2/14

Abstract: Disclosed is an apparatus for detecting liquid discharge characteristics according to an embodiment of the present invention, the apparatus including: a liquid supply unit supplying a liquid; a liquid guide unit including a flow path through which the liquid supplied from the liquid supply unit passes and a nozzle mounting portion communicating with the flow path and on which the nozzle is mounted and guiding the liquid supplied from the liquid supply unit to the nozzle mounted on the nozzle mounting portion; a lighting unit projecting light onto the liquid passing through the flow path inside the liquid guide unit; and a camera obtaining an image of the liquid discharged from the nozzle by being arranged toward the nozzle.