of ink which does not need to be removed because the pigment had not sedimented in this body of ink therefore this embodiment is smaller in the amount of waste ink and therefore the waste ink absorbing member in the recording apparatus may be smaller thus this embodiment makes it possible to reduce the recording apparatus in size described below are the sequential steps in the recovery operation for removing the sedimented ink ingredients with the use of the cap 19 1 the sealing member of the cap 19 is pressed on the plug 18 to hermetically seal the space surrounded by the sealing member 20 and the area of the bottom surface of the cartridge 1 which is next to the bottom opening of the ink passage section 6 a 2 the projection 21 which extends from within the sealing member 20 reaches beyond the opening s of the plug 18 and comes into contact with the ball 15 3 the cap 19 is to be pressed hard enough for the projection 21 to push upward the ball 15 away from the ball seat 17 4 negative pressure is generated in the cap 19 to suction ink by a preset amount in the direction indicated by an arrow mark t 5 after the removal of the preset amount of ink the cap 19 is moved in the direction downward to remove the pressure applied to the cartridge 1 by the cap 19 incidentally in the above described embodiment ink is suctioned out of the ink passage section 6 a.