Developer supplying cartridge, developer receiving cartridge, process cartridge, and image forming apparatus

A developer supply container detachably mountable to an image forming apparatus, comprising:

• a container body for containing a developer;
• a discharging opening for permitting discharge of the developer from said container body, wherein the developer discharged through said discharging opening is supplied into a developer receiving container which is detachably mounted to the image forming apparatus;
• a shutter member movable between an opening position for opening said discharging opening and a closing position for closing said discharging opening;
• an engaging portion engageable with the developer receiving container, and
• wherein with said developer supply container being in place in the image forming apparatus, said shutter member is moved from the closing position to the opening position by said engaging portion receiving a force from the developer receiving container in response to a mounting operation for mounting the developer receiving container to the image forming apparatus, and
• wherein with the developer receiving container being in place in the image forming apparatus, said shutter member is moved from the closing position to the opening position by said engaging portion receiving a force from the developer receiving container in response to a mounting operation for mounting said developer supply container to the image forming apparatus.

A developer supply container detachably mountable to an image forming apparatus, comprising:

• a container body for containing a developer;
• a discharging opening for permitting discharge of the developer from said container body, wherein the developer discharged through said discharging opening is supplied into a developer receiving container which is detachably mountable to the image forming apparatus;
• a shutter member movable between an opening position for opening said discharging opening and a closing position for closing said discharging opening;
• and
• an engaging portion engageable with the developer receiving container,
• wherein with said developer supply container and the developer receiving container being in place in the image forming apparatus, said shutter member is moved from the opening position to the closing position by said engaging portion receiving a force from the developer receiving container in response to a dismounting operation of said developer supply container from the image forming apparatus, and
• wherein with said developer supply container and the developer receiving container being in place in the image forming apparatus, said shutter member is moved from the opening position to the closing position by said engaging portion receiving a force from the developer receiving container in response to a dismounting operation of the developer receiving container from the image forming apparatus.

A toner cartridge for supplying toner into a process cartridge having a developing device, said toner cartridge being detachably mountable to an image forming apparatus, said toner cartridge comprising:

• a container for containing toner;
• a discharge opening, provided in said container, for permitting discharging of the toner, wherein the toner discharged through said discharge opening is supplied into the process cartridge mounted detachably to the image forming apparatus;
• and
• a shutter member movable between an open position for opening said discharge opening and a close position for closing said discharge opening,
• wherein said shutter member has an engaging portion for engagement with the process cartridge,
• wherein in a state wherein said toner cartridge is mounted to the image forming apparatus, said shutter member is moved from the close position to the open position by said engaging portion receiving a force from the process cartridge in response to an operation of mounting the process cartridge to the image forming apparatus, and
• wherein in a state wherein the process cartridge is mounted to the image forming apparatus, said shutter member is moved from the close position to the open position by said engaging portion receiving a force from the process cartridge in response to an operation of mounting said toner cartridge to the image forming apparatus.

A toner cartridge supplying toner into a process cartridge having a developing device, said toner cartridge being detachably mountable to an image forming apparatus, said toner cartridge comprising:

• a container for containing toner;
• a discharge opening, provided in said container, for permitting discharging of the toner, wherein the toner discharged through said discharge opening is supplied into the process cartridge mounted detachably to the image forming apparatus;
• and
• a shutter member for opening and closing said discharge opening;
• wherein said shutter member has an engaging portion for engagement with the process cartridge,
• wherein in a state wherein both of said toner cartridge and the process cartridge are mounted to the image forming apparatus, said shutter member is moved from the open position to the close position by said engaging portion receiving a force from the process cartridge in response to an operation of dismounting said toner cartridge from the image forming apparatus, and
• wherein in a state wherein both of said toner cartridge and the process cartridge are mounted to the image forming apparatus, said shutter member is moved from the open position to the close position by said engaging portion receiving a force from the process cartridge in response to an operation of dismounting the process cartridge from the image forming apparatus.

A toner cartridge for supplying toner into a process cartridge having a developing device, said toner cartridge being detachably mountable to an image forming apparatus, said toner cartridge comprising:

• a container body for containing a developer;
• a discharge opening, provided in said container body, for permitting discharging of the developer, wherein the developer discharged through said discharge opening is supplied to a process cartridge which is disposed below said container body and which is detachably mountable to the image forming apparatus;
• and
• a shutter member for opening and closing said discharge opening,
• wherein said shutter member is closed and opened by movement of said toner cartridge relative to the process cartridge, and
• wherein said shutter member is closed and opened by movement of the process cartridge relative to said toner cartridge.