Patent ID: 7104625

Claim:
An ink jet printing apparatus which performs printing by moving a print head in a main scan direction and also feeding a print medium in a subscan direction crossing the main scan direction, the ink jet printing apparatus comprising: detection means for detecting a travel range of the print head; decision means for determining whether or not the detected travel range is a proper travel range; control means for performing a predetermined control if the decision means decides that the travel range of the print head is not the proper travel range; an ink tank containing ink to be supplied to the print head and being removably mounted on the print head; and a restricting member for interfering with the ink tank to limit a travel range of the print head to less than a proper travel range only if the ink tank mounted on the print head is not properly mounted on the print head, wherein the print head can removably mount a plurality of kinds of ink tanks and the decision means determines, based on the detected travel range, at least one of the kinds and number of the ink tanks that are not properly mounted on the print head.