When a developer supply cartridge is set at a predetermined position for discharging {HEAD ~ a developer} into {TAIL ~ a developing device} on a cartridge holding portion of the developing device, the developer supply cartridge is locked by a locking member so as to be detached from the predetermined position 
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When a developer supply cartridge is set at a predetermined position for discharging { HEAD ~ a developer } into { TAIL ~ a developing device } on a cartridge holding portion of the developing device , the developer supply cartridge is locked by a locking member so as to be detached from the predetermined position
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL 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