Patent ID: 8814295

Claim:
A printing apparatus comprising: a first ink tank to an n-th (n is an integer equal to or greater than 2) ink tank in which ink accommodated in an ink pack is fillable; a first slot to an n-th slot that respectively correspond to the first ink tank to the n-th ink tank; a first memory unit to an n-th memory unit, each of which is corresponding to the color of ink contained in the ink pack and are respectively installable in the first slot to the n-th slot; and a processing unit that controls read-out of data from or writing of data to the first memory unit to the n-th memory unit that are respectively installed in the first slot to the n-th slot, wherein each of the first memory unit to the n-th memory unit has a storage device, and wherein the processing unit executes a process of counting ink consumption for each ink color during the printing, updates total ink consumption information on the main body side for each ink color on the basis of the counted ink consumption, writes the total ink consumption based on the total ink consumption information on the main body side, to the storage device of the memory unit corresponding to the ink color in the first memory unit to the n-th memory unit, every time an amount of increase in the total ink consumption based on the total ink consumption information on the main body side exceeds a first threshold value, writes the total ink consumption in the storage device of the memory unit when the total ink consumption exceeds a second threshold value for defining the termination of use of the memory unit even in a case where the amount of increase in the total ink consumption does not exceed the first threshold value, and writes use termination information indicating that the use of the memory unit is terminated, in the storage device.