Ink-jet printing apparatus and cleaning control method of the same

摘要

Disclosed are an ink-jet printing apparatus and cleaning control method capable of reducing density variations in printed images by controlling the number of times of wiping during image printing and capable of printing without lowering the throughput. A dot counter counts printing dots printed by ink droplets discharged from a printing head. A wiping flag "A" is set on the basis of the result of comparison of this count value with a predetermined threshold value. By referring to this wiping flag "A", whether the ink discharge surface of the printing head is to be cleaned with a blade while the printing head is printing one page of a printing sheet is determined. When the printing sheet printed by the printing head is to be discharged, whether the ink discharge surface of the printing head is to be cleaned with the blade is determined by referring to a wiping flag "B" that is set on the basis of the result of comparison of the value of Nd with another threshold value.