In {TAIL ~ operation}, the input buffer 91 temporarily stores {HEAD ~ the image data} supplied from the the enlarging/reducing section 84 
In { TAIL ~ operation } , the input buffer 91 temporarily stores { HEAD ~ the image data } supplied from the the enlarging / reducing section 84
OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH