Patent ID: 6527381
Filing Date: 2003-03-04
Classification: B41J

Abstract:
A liquid container comprising:a negative pressure generating member containing chamber receiving a negative pressure generating member formed with a fibrous material and having a liquid supply portion and an atmosphere communicating portion; a liquid containing chamber forming a substantially enclosed space having a communicating portion communicating with said negative pressure generating member containing chamber and storing a liquid to be supplied to said negative pressure generating member; a partition wall separating said negative pressure generating member containing chamber and said liquid containing chamber and formed with said communicating portion; an atmospheric air introducing mechanism in a surface of said partition wall which faces said negative pressure generating member containing chamber, said atmospheric air introducing mechanism allowing atmospheric air to be introduced from a negative pressure generating member containing chamber side of said partition wall, said atmospheric air introducing mechanism including a plurality of projecting portions and depressed portions which are arranged in rows from an intermediate portion of said partition wall to said communicating portion, each of said projecting portions including a first projecting portion and a second projecting portion adjacent to said communicating portion of said partition wall, said second projecting portion projecting via an inclined surface from said first projecting portion toward said negative pressure generating member containing chamber; and wherein surfaces of said first and second projecting portions and bottom surfaces of said depressed portions are recessed in a direction toward said liquid containing chamber relative to the surface of said partition wall.