Patent ID: 6290344
Filing Date: 2001-09-18
Classification: B41J

Abstract:
An ink container for ink jet printing comprising:a casing;an air vent, said air vent being located in said casing;an ink supply opening provided in said casing for supplying an ink out of said casing;an ink absorbing material contained in said casing, said ink absorbing material producing negative pressure and thereby retaining ink therein, said ink absorbing material having a generally rectangular parallelopipedal shape defined by a plurality of sides of said ink absorbing material, said ink absorbing material having an ink supply portion for supplying the ink to said ink supply opening and having a plurality of corner portions, each said corner portion being located between adjacent two said sides of said ink absorbing material; andpreventing means for preventing complete surface contact between said casing and said ink absorbing material by provision of at least one cavity between said casing and said ink absorbing material, said cavity extending adjacent to a particular one of said corner portions that is most remote from said ink supply portion, said air vent being in air communication with said cavity,wherein said cavity is not in air communication with said ink supply opening.