Patent ID: 7841686

Claim:
A recording apparatus to which a recording liquid accommodating container having a recording liquid accommodating portion is mountable, wherein said recording liquid accommodating container includes communicating means for bi-directional wireless communication with said recording apparatus, said recording apparatus includes a communication antenna for wireless communication with said communicating means; said communication antenna and said communicating means are constructed to be disposed opposed to each other with said recording liquid accommodating portion interposed therebetween, and it is discriminated depending on a state of wireless communication between said communication antenna and said communicating means whether or not a remaining amount of the recording liquid in said recording liquid accommodating portion is not more than a predetermined amount, wherein said communicating means wirelessly receives a signal from said communication antenna and returns a signal in response to the received signal, and wherein the remaining amount of the recording liquid is discriminated as being not more than the predetermined amount when a ratio of a number of the signals returned from said communicating means sent in response to the wirelessly received signals to a number of the signals sent from said communication antenna is larger than a predetermined threshold.