US 12,220,921 B2
Nozzle clogging defect compensating method for binder jetting stack manufacturing means
Hwa Seon Shin, Yongin-si (KR); Sung Hun Park, Seoul (KR); Hye In Lee, Anyang-si (KR); Sung Hwan Chun, Seoul (KR); and Jin Min Jang, Seoul (KR)
Assigned to Korea Electronics Technology Institute, Seongnam-si (KR)
Appl. No. 17/780,117
Filed by Korea Electronics Technology Institute, Seongnam-si (KR)
PCT Filed Nov. 10, 2020, PCT No. PCT/KR2020/015676
§ 371(c)(1), (2) Date May 26, 2022,
PCT Pub. No. WO2021/107453, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 10-2019-0156380 (KR), filed on Nov. 29, 2019.
Prior Publication US 2022/0410574 A1, Dec. 29, 2022
Int. Cl. B41J 2/21 (2006.01); B41J 2/165 (2006.01)
CPC B41J 2/16579 (2013.01) [B41J 2/2139 (2013.01); B41J 2/2142 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A nozzle clogging defect compensation method comprising:
when a clogging defect occurs in a nozzle used in binder jetting additive manufacturing, determining a defect occurrence area;
determining whether compensation for the defect occurrence area is possible;
when the compensation is possible, generating defect information and reflecting the defect information on an output code;
setting a defect compensation area based on the defect information;
determining a defect compensation type of the defect compensation area; and
reflecting a result of the determining on the output code,
wherein the determining whether the compensation is possible comprises estimating a compensation range according to binder viscosity, and, when the defect occurrence area is less than or equal to the estimated compensation range, determining the defect occurrence area as a compensable area.