Patent ID: 6394590
Filing Date: 2002-05-28
Classification: B41J

Abstract:
A liquid container for containing printing liquid for supplying to a recording head for an ink jet recording apparatus, the container comprising:a first chamber containing a negative pressure producing material and having a printing liquid supply port connectable to the recording head for allowing printing liquid to be supplied to the recording head and an air vent for allowing ambient air to enter the container; an outward hollow extension in fluid communication with said first chamber via a communication port; and a second chamber in fluid communication with said first chamber via said outward hollow extension and said communication port, said second chamber providing a printing liquid reservoir for the first chamber and being substantially closed apart from a portion thereof for communication with said outward hollow extension to allow the printing liquid to flow into said first chamber via said outward hollow extension and to allow air to be introduced into said second chamber from said first chamber via said outward hollow extension, wherein said second chamber is detachably mountable to said outward hollow extension.