Therefore, produced printing data allows {TAIL ~ the density} to be controlled to change continuously and gradually, and {HEAD ~ quality degradation} caused by density variations attributable to the printing head can be less perceptible 
Therefore , produced printing data allows { TAIL ~ the density } to be controlled to change continuously and gradually , and { HEAD ~ quality degradation } caused by density variations attributable to the printing head can be less perceptible
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH