A printer includes a paper feeder, {HEAD ~ toner}, a photo conductor, and {TAIL ~ various mechanisms} 
A printer includes a paper feeder , { HEAD ~ toner } , a photo conductor , and { TAIL ~ various mechanisms }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL