{HEAD ~ Still another object} of the present invention is to prevent {TAIL ~ the cylindrical surface} of the drum and the cleaner of the image forming apparatus from being damaged 
is to prevent
{ HEAD ~ Still another object } of the present invention is to prevent { TAIL ~ the cylindrical surface } of the drum and the cleaner of the image forming apparatus from being damaged
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH