Electrophotographic image forming apparatus and process cartridge

A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, said main assembly including a motor, said process cartridge comprising:

• an electrophotographic photosensitive drum,
• process means actable on said electrophotographic photosensitive drum;
• a developer accommodating portion that accommodates a developer for developing an electrostatic latent image formed on said electrophotographic photosensitive drum;
• a developer supply opening, provided in said developer accommodating portion, that supplies the developer from said developer accommodating portion to said electrophotographic photosensitive drum;
• a sealing member that unsealably seals said developer supply opening;
• an unsealing device that unseals said developer supply opening by removing said sealing member from said developer supply opening by receiving a driving force from the motor and acting on said sealing member;
• and
• a spacer member that spaces said electrophotographic photosensitive drum and said process means from each other, said spacer member being movable from a spacing position for spacing said electrophotographic photosensitive drum and said process means from each other to a contact position for permitting contact between said electrophotographic photosensitive drum and said process means,
• wherein said spacer member receives the driving force from said motor by way of said unsealing device to move from the spacing position to the contact position.