US Patent 7391531 Printer with replaceable ink cartridge and print quality IC

A printer includes a processor. A replaceable ink cartridge includes a first integrated circuit (IC) containing print quality information and which is configured to be interfaced, in a releasable manner, to the processor. A replaceable printhead module includes a printhead which is configured to be interfaced, in a releasable manner, to the processor. The printhead is configured to print ink supplied from the ink cartridge using the print quality information.