There is disclosed an ink tank in which an ink holding member is inhibited from being excessively deformed, and which steadily supplies an ink. A foaming direction of urethane of a first ink holding member is disposed substantially vertically (arrow B) to an abutment direction of an ink jet head onto...http://www.google.com.au/patents/US6877847?utm_source=gb-gplus-sharePatent US6877847 - Ink tank
