The timing of {TAIL ~ discharge} of {HEAD ~ ink} from the printing head is corrected to cancel out the determined amount of variation, and printing is performed based on image data in accordance with the corrected timing 
The timing of { TAIL ~ discharge } of { HEAD ~ ink } from the printing head is corrected to cancel out the determined amount of variation , and printing is performed based on image data in accordance with the corrected timing
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH