Patent ID: 7137684

Claim:
An inkjet printer comprising: first and second carriers each accommodating any one of a first cartridge and a second cartridge and generating a first identification signal representing the first cartridge and a second identification signal representing the second cartridge, wherein the one of the first and second cartridges is arbitrarily mounted on one of the first and second carriers; and a main logic board recognizing the arbitrarily mounted first and second cartridges in response to the first identification signal and the second identification signal transmitted through the first and second carriers, generating specifications of the arbitrarily mounted first and second cartridges when the arbitrarily mounted first and second cartridges are recognized, and controlling the arbitrarily mounted first and second cartridges to print a printing image representing one of a black and white image and a color image in accordance with the specifications of the arbitrarily mounted first and second cartridges, wherein all of the arbitrarily mounted first and second cartridges are a black cartridge for printing the black and white image, or all of the arbitrarily mounted first and second cartridges are a color cartridge for printing the color image.