INK CONSUMPTION AMOUNT-CALCULATING METHOD AND DEVICE INK JET PRINTER INCORPORATING THE DEVICE PRINTING COST-CALCULATING SYSTEM AND COLORING MATERIAL SUPPLY MANAGEMENT SYSTEM

摘要

PURPOSE: An ink consumption amount calculating method, an ink consumption amount calculating device and an ink-jet printer comprising the same are provided to calculate exact ink consumption based on the result value of ink output count form an ink-jet head. CONSTITUTION: The ink consumption amount calculating method for calculating the ink consumption amount in an ink-jet printer(20) comprises an ink ejection time counting step of counting the ink ejection times from an ink jet head, and an ink consumption amount calculating step of calculating the ink consumption amount based on the ink ejection numbers counted in the ink ejection time counting step.