REMAINING AMOUNT OF INK DETECTING DEVICE AND DETECTING METHOD FOR PRINTING DEVICE

摘要

PROBLEM TO BE SOLVED: To indicate the remaining amount of ink so that the remaining amount of ink in an ink vessel can easily be checked even during printing. SOLUTION: The number of times of processing and the number of times of printing are counted respectively to operate the using amount of processing ink by the counted number of processing and a reference using amount of ink per one time of the processing while the using amount of printing ink is operated by the counted number of times of printing and a reference using amount of ink per one sheet of a printed matter. A total ink using amount is operated by the using amount of processing ink and the using amount of printing ink while the remaining amount of ink in the ink vessel is operated by the total ink using amount and the remaining amount of ink is indicated in the indicating means of an operating panel.