Patent ID: 7934818
Filing Date: 2011-05-03
Classification: B41J

Abstract:
1. An ink cartridge, comprising: a casing accommodating therein an ink chamber; an air intake port formed on the casing for introducing air into the ink chamber; an air intake valve that opens and closes the air intake port, wherein the air intake valve is positioned within the air intake port; a protective member removably attached to the casing so as to cover the air intake port; a biasing member configured to bias the air intake valve to close the air intake port until a motion detaching the protective member from the casing; and a manipulating rod positioned between the air intake valve and the protecting member and configured to open the air intake valve by moving through the air intake port toward the air intake valve in response to the motion of the protective member, wherein the air intake valve is configured to remain within the air intake port and to be biased by the biasing member after the protective member is detached from the casing.