said {HEAD ~ first end side lock portion} is inserted and fitted into {TAIL ~ a first end side guide member} provided in a side plate serving as the first end side main body frame in a direction orthogonal to the longitudinal direction of said cartridge; and 
said { HEAD ~ first end side lock portion } is inserted and fitted into { TAIL ~ a first end side guide member } provided in a side plate serving as the first end side main body frame in a direction orthogonal to the longitudinal direction of said cartridge ; and
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH REL TAIL TAIL TAIL 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