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