Patent ID: 6776467
Filing Date: 2004-08-17
Classification: B41J

Abstract:
A method of controlling an ink jet recording apparatus including a main tank having an information storage section for storing an ink amount and ink attributes as ink information and replaceably received in a pressure tank, a sub-tank communicating with an ink jet head and storing ink sent from the main tank by pressure in the pressure tank, a tank-accommodating block for accommodating the main tank together with the pressure tank, and a control section capable of storing the ink information to be stored in the main tank,wherein the ink jet recording apparatus supplies the ink in the main tank to the sub-tank by opening and closing a valve arranged on an upstream side of the sub-tank in response to a signal indicative of an ink fill-up/shortage condition of the sub-tank, the method comprising the step of: stopping operation of a pressure source for pressurizing the pressure tank and at the same time making an inside of the pressure tank open to the atmosphere as well as writing an item of the ink information concerning the ink amount of the main tank stored in the control section into the information storage section of the main tank, in response to a signal indicative of opening of a door of the tank-accommodating block during operation of the apparatus.