Patent ID: 7997708

Claim:
An ink cartridge for printers comprising a body ( 10 ) formed in a predetermined shape and having a filling hole ( 11 ) on one surface of the body ( 10 ), a filling chamber ( 30 ) where ink is filled inside the body ( 10 ), a discharging chamber ( 31 ) connected to the filling chamber ( 30 ), an ink discharging port ( 40 ) connected to the discharging chamber ( 31 ) through the medium of an ink transferring channel ( 43 ), an air chamber ( 32 ) connected to the filling chamber ( 30 ) to supply air through the medium of an air transferring channel ( 55 ), an air suction valve ( 50 ) installed in the air chamber ( 32 ), an air inducing channel ( 56 ) that induces exterior air into the air suction valve ( 50 ), a blocking film ( 60 ) attached onto one surface of the body ( 10 ), and a cover ( 70 ) installed on another surface of the body ( 10 ), and a pressure regulating part ( 80 ) on one surface of outer body ( 10 ), which communicates with the filling chamber ( 30 ).