When the lever 19 is pushed up by {TAIL ~ the cut sheet}, the tip T of the lever 19 only touches the forbidden zone B. Since the lever 19 pushes the front surface downward, there is no concern that the toner image on the front surface will touch an inner surface of {HEAD ~ the upper guide piece} 16 until the cut sheet arrive at the driving rollers 12 and 13, and since the tip T only touches the forbidden zone B, it is not necessary to worry that the toner image will be damaged by the tip 
When the lever 19 is pushed up by { TAIL ~ the cut sheet } , the tip T of the lever 19 only touches the forbidden zone B. Since the lever 19 pushes the front surface downward , there is no concern that the toner image on the front surface will touch an inner surface of { HEAD ~ the upper guide piece } 16 until the cut sheet arrive at the driving rollers 12 and 13 , and since the tip T only touches the forbidden zone B , it is not necessary to worry that the toner image will be damaged by the tip
OTH OTH OTH OTH OTH OTH OTH OTH TAIL 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 OTH OTH 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 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 OTH OTH OTH OTH OTH OTH