US 12,434,438 B2
Method for cleaning a print head
Jonas Reinhardt, Igis (CH); Christian Niedrig, Azmoos (CH); and Nicola Bitar, Montlingen (CH)
Assigned to Ivoclar Vivadent AG, Schaan (LI)
Filed by Ivoclar Vivadent AG, Schaan (LI)
Filed on Jul. 20, 2023, as Appl. No. 18/355,706.
Claims priority of application No. 22186215 (EP), filed on Jul. 21, 2022.
Prior Publication US 2024/0025120 A1, Jan. 25, 2024
Int. Cl. B08B 3/10 (2006.01); B08B 3/12 (2006.01); B29C 64/112 (2017.01); B29C 64/209 (2017.01); B29C 64/35 (2017.01); B33Y 30/00 (2015.01); B33Y 40/00 (2020.01)
CPC B29C 64/35 (2017.08) [B08B 3/10 (2013.01); B08B 3/12 (2013.01); B29C 64/112 (2017.08); B29C 64/209 (2017.08); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12)] 9 Claims
OG exemplary drawing
 
1. A method for removing deposits in a print head of a 3D printer, comprising the steps of:
supplying a liquid comprising a granular solid to the print head; and
setting into vibration the liquid in the print head;
wherein an outlet nozzle of the print head is closed by a closing device while the liquid in the print head is set into vibration so that no liquid can escape through an opening of the nozzle;
wherein the print head comprises a feeding channel and a return channel;
wherein deposits are removed from both the feeding channel and the return channel.