US 12,296,602 B2
Ink supply system of ink-jet head provided with emergency drain function and ink-jet printer having same
Yunseok Choi, Cheonan-si (KR)
Assigned to GOSANTECH CO., LTD., Cheonan-si (KR)
Filed by GOSANTECH CO., LTD., Cheonan-si (KR)
Filed on Jul. 13, 2023, as Appl. No. 18/351,567.
Claims priority of application No. 10-2022-0112673 (KR), filed on Sep. 6, 2022.
Prior Publication US 2024/0075748 A1, Mar. 7, 2024
Int. Cl. B41J 2/18 (2006.01); B41J 2/175 (2006.01)
CPC B41J 2/18 (2013.01) [B41J 2/17596 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An ink supply system of an ink-jet head provided with an emergency drain function, the ink supply system comprising:
an ink-jet head having a nozzle configured to discharge ink;
an ink storage apparatus in which ink supplied to the ink-jet head is stored;
a supply flow path configured to supply ink stored in the ink storage apparatus to the ink-jet head;
a recovery flow path configured to return at least some of ink supplied to the ink-jet head to the ink storage apparatus;
a flow path blocker mounted at any one of the supply flow path and the recovery flow path, the flow path blocker being configured to block an ink flow between the ink-jet head and the ink storage apparatus in an emergency situation;
a flow path changer mounted at the other one of the supply flow path and the recovery flow path, the flow path changer being configured to block an ink flow between the ink-jet head and the ink storage apparatus and to connect a drain pipe with the ink-jet head in the emergency situation;
the drain pipe connected to the flow path changer, thereby being connected to the ink-jet head in the emergency situation;
a drain ink storage portion connected to the drain pipe, the drain ink storage portion being configured to drain and store ink already supplied in the ink-jet head in the emergency situation; and
a drain portion configured to drain ink already supplied in the ink-jet head in the emergency situation.