Patent ID: 6575567
Filing Date: 2003-06-10
Classification: B41J

Abstract:
A liquid supplying system comprising a negative pressure producing member accommodating chamber and a liquid accommodating container having a connecting portion for detachably mounting said liquid accommodating container to said negative pressure producing member accommodating chamber,wherein said negative pressure producing member accommodating chamber includes a liquid supply portion for supplying liquid to outside, and a gas vent for gas communication with ambience, said negative pressure producing member accommodating chamber for accommodating a negative pressure producing member for retaining liquid therein, and wherein said liquid accommodating container defines a substantially hermetically sealed space except for liquid and gas communication with said negative pressure producing member accommodating chamber through said connecting portion, and wherein said connecting portion of the liquid accommodating container functions in common both for introduction of gas from said negative pressure producing member accommodating chamber into said liquid accommodating container and for discharge of the liquid from said liquid accommodating container into said negative pressure producing member accommodating chamber, wherein said connecting portion includes an air introducing groove for permitting the introduction of the gas and a liquid discharge passage for permitting the discharge, wherein the air introducing groove has a vertical groove section which, when said liquid accommodating container is mounted to the negative pressure producing member accommodating chamber, is in contact with the negative pressure producing member of the negative pressure producing member accommodating chamber, and wherein the air introducing groove is disposed at an upper part of said connecting portion when said liquid accommodating container is mounted and said liquid supplying system is operating.