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