| 摘要 |
The present invention provides a liquid container which has a check valve for preventing a flow of outside air into its inside and which is capable of maintaining the performance of the check valve constant. An ink pack ( 25 ) includes a bag portion ( 36 ), which holds an outlet portion by heat-welding. An internal space (S) is formed in the bag portion ( 36 ), and ink is contained therein. The outlet portion has a first flow path forming component ( 41 ). A first recess portion ( 47 ) is recessed from the one side surface ( 41 a) of the first flow path forming component ( 41 ). First and second ink flow paths ( 46, 51 ), which communicate with the internal space (S), extend from a bottom surface ( 47 a) of this first recess portion ( 47 ). A valve seat ( 53 ) is formed in a projecting shape so as to surround the second ink flow path ( 51 ). A laminate film ( 36 a) sealingly closes the first recess portion ( 47 ). Thus, a valve body accommodating chamber ( 55 ) is formed. The valve body accommodating chamber ( 55 ) accommodates a first valve body ( 58 ). The valve body ( 58 ) and the valve seat ( 53 ) form a first valve device ( 59 ).
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