| 摘要 |
An ink-jet printing apparatus is capable of restricting recovering operation for a printing head into necessary minimum times for preventing defect to be caused upon printing, limit waste ink amount and avoid possibility of damaging the printing head. Thus, the apparatus divides nozzles having nozzle number of 1 to 512 into 8 nozzle blocks. With respect to each nozzle block, number of ink ejection data in the corresponding image data is integrated. When the integrated value becomes greater than or equal to a predetermined value, the recovering operation is taken place for the printing head.
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