| 摘要 |
PROBLEM TO BE SOLVED: To accurately detect the residual amt. of ink by calculating the residual amt. of ink by subtracting the calculated amt. of ink from the total amt. of ink and renewing the residual amt. of ink in the operation timing of a switch means operated when the residual amt. of ink becomes a set value or less. SOLUTION: When printing is executed by main scanning driving, the number of ink jet nozzles, that is, the number of dots of emitted ink is added to an ink count variable I in an emitting ink amt. calculation means 2. Next, the ink count variable I is multiplied by a constant A to calculate the amt. of emitted ink. Further, the percentage of the emitted ink to the total amt. G of ink is calculated as the residual amt. Z of ink in an ink residual amt. calculation means 3. Next, it is checked whether a switch means 4 is already turned ON and, in the case of YES, the value of the constant A is calibrated 7 and the fixed value corresponding to the residual amt. Z of ink is substituted for the ink count variable I and shift is corrected to complete processing. |
