Patent ID: 6968147

Claim:
A cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, said cartridge comprising: a developer accommodating portion configured to accommodate a developer; a developer supply port configured and positioned to supply the developer to developing means for developing an electrostatic latent image formed on an electrophotographic photosensitive member; a removable sealing tape configured and positioned to seal said developer supply port; a covering member which is capable of assuming an opening position for opening said developer supply port and a closing position for closing said developer supply port and to which one longitudinal end of said sealing tape is fixed, wherein said covering member is effective to cover said sealing tape sealing said developer supply port when said covering member is at the closing position; and a cartridge locking portion configured and positioned to lock said covering member when said covering member is at the closing position; wherein when said cartridge is mounted to the main assembly of the apparatus, locking between said cartridge locking portion and said covering member is released by engagement between said covering member and the main assembly of the apparatus, and said covering member moves from said closing position to said opening position, and said sealing tape is removed from said developer supply port to open said developer supply port.