US 12,109,806 B2
Inkjet printing apparatus and method for inspecting inkjet head using same
Byung Chul Lee, Yongin-si (KR); Heung Cheol Jeong, Yongin-si (KR); Myung Soo Huh, Yongin-si (KR); Cheol Lae Roh, Yongin-si (KR); and Do Hun Lee, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Appl. No. 17/904,370
Filed by Samsung Display Co., LTD., Yongin-si (KR)
PCT Filed Jun. 2, 2020, PCT No. PCT/KR2020/007171
§ 371(c)(1), (2) Date Aug. 16, 2022,
PCT Pub. No. WO2021/167172, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. 10-2020-0019050 (KR), filed on Feb. 17, 2020.
Prior Publication US 2023/0055700 A1, Feb. 23, 2023
Int. Cl. B41J 2/045 (2006.01); G01N 15/1434 (2024.01); G01N 15/14 (2006.01)
CPC B41J 2/0451 (2013.01) [B41J 2/04586 (2013.01); G01N 15/1434 (2013.01); G01N 2015/1486 (2013.01)] 20 Claims
OG exemplary drawing
 
16. A method of inspecting an inkjet head, comprising:
ejecting ink, which contains a plurality of dipoles and a solvent in which the plurality of dipoles are dispersed, on an inspection substrate;
inspecting a discharge amount of the ink applied onto the inspection substrate;
removing the solvent contained in the ink applied onto the inspection substrate; and
measuring a number of dipoles remaining on the inspection substrate.