US 11,791,187 B2
Mark printing device and method of printing mark using the same
Gon Kim, Seoul (KR); Dong Hwan Kim, Incheon (KR); Sang Hoon Baek, Seongnam-si (KR); Jung Wan Hong, Hwaseong-si (KR); and Young In Kim, Jeollanam-do (KR)
Assigned to SEMES CO., LTD., Cheonan-si (KR)
Filed by SEMES CO., LTD., Cheonan-si (KR)
Filed on Oct. 28, 2020, as Appl. No. 17/82,777.
Claims priority of application No. 10-2019-0137274 (KR), filed on Oct. 31, 2019.
Prior Publication US 2021/0134633 A1, May 6, 2021
Int. Cl. H01L 21/67 (2006.01); H01L 21/677 (2006.01); B41J 2/01 (2006.01); B41J 2/44 (2006.01); G06F 3/12 (2006.01); B41J 3/407 (2006.01); B41J 2/045 (2006.01); B41J 23/02 (2006.01); B41J 29/393 (2006.01)
CPC H01L 21/67733 (2013.01) [B41J 2/01 (2013.01); B41J 2/04541 (2013.01); B41J 2/04586 (2013.01); B41J 2/442 (2013.01); B41J 3/4073 (2013.01); B41J 23/02 (2013.01); B41J 29/393 (2013.01); G06F 3/1285 (2013.01); H01L 21/67 (2013.01); H01L 21/67259 (2013.01); H01L 21/67282 (2013.01); H01L 21/67706 (2013.01); H01L 21/67724 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A mark printing device comprising;
a driving unit driving along a driving rail of an overhead hoist transport;
a printing unit mounted on the driving unit, the printing unit being configured to print on the driving rail a mark for guiding a motion of a vehicle of driving along the driving rail;
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 to be printed on the driving rail 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 in the driving rail; 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,
wherein the printing unit comprises:
a printer being configured to print the mark on the driving rail; and
a motor being configured to move the printer so that the printer is adjacent to or spaced apart from the driving rail.