Upon {TAIL ~ the occurrence} of a malfunction in the writer, {HEAD ~ operation} of the image signal generator is continued only until the first to occur of all of the original pages have been stored in the multiple page buffer memory or the multiple page buffer memory is filled 
Upon { TAIL ~ the occurrence } of a malfunction in the writer , { HEAD ~ operation } of the image signal generator is continued only until the first to occur of all of the original pages have been stored in the multiple page buffer memory or the multiple page buffer memory is filled
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH 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 OTH OTH OTH OTH OTH OTH OTH