Image forming apparatus and main assembly of the image forming apparatus

An image forming apparatus for forming an image on a recording material, comprising:

• a main assembly provided with an opening through which a cartridge is to be mounted into and demounted from said main assembly;
• an openable member movable between a closed position where the opening is closed and an open position where the opening is open;
• and
• a cartridge, including a portion-to-be-urged, detachably mountable to said main assembly in a mounting completion position,
• wherein said openable member includes a guiding portion including a supporting surface, a recessed portion provided partway of said supporting surface, and an urging portion as a part of said supporting surface,
• wherein when said openable member is in the open position, said supporting surface is capable of guiding said cartridge to the opening,
• wherein during a closing operation of said openable member, said urging portion and said portion-to-be-urged contact each other to push said cartridge toward the mounting completion position,
• wherein when said openable member is in the closed position, a spacing is provided between said recessed portion and said portion-to-be-urged,
• wherein said cartridge is a developing cartridge including a developing roller for developing an electrostatic latent image formed on said photosensitive drum,
• wherein said developing cartridge includes a side member at one end portion with respect to an axial direction of said developing roller, and
• wherein said side member includes said portion-to-be-urged.

An image forming apparatus for forming an image on a recording material, comprising:

• a main assembly provided with an opening through which a cartridge is to be mounted into and demounted from said main assembly;
• an openable member movable between a closed position where the opening is closed and an open position where the opening is open;
• and
• a cartridge, including a portion-to-be-urged, detachably mountable to said main assembly in a mounting completion position,
• wherein said openable member includes a guiding portion including a supporting surface, a recessed portion provided partway of said supporting surface, and an urging portion as a part of said supporting surface,
• wherein when said openable member is in the open position, said supporting surface is capable of guiding said cartridge to the opening,
• wherein during a closing operation of said openable member, said urging portion and said portion-to-be-urged contact each other to push said cartridge toward the mounting completion position,
• wherein when said openable member is in the closed position, a spacing is provided between said recessed portion and said portion-to-be-urged,
• wherein said cartridge is a developing cartridge including a developing roller for developing an electrostatic latent image formed on said photosensitive drum,
• wherein said developing cartridge includes a side member at each end portion with respect to an axial direction of said developing roller, and
• wherein said side member includes said portion-to-be-urged.

An image forming apparatus for forming an image on a recording material, comprising:

• a main assembly provided with an opening through which a cartridge is to be mounted into and demounted from said main assembly;
• an openable member movable between a closed position where the opening is closed and an open position where the opening is open;
• and
• a cartridge, including a portion-to-be-urged, detachably mountable to said main assembly in a mounting completion position,
• wherein said openable member includes a guiding portion including a supporting surface, a recessed portion provided partway of said supporting surface, and an urging portion as a part of said supporting surface,
• wherein when said openable member is in the open position, said supporting surface is capable of guiding said cartridge to the opening,
• wherein during a closing operation of said openable member, said urging portion and said portion-to-be-urged contact each other to push said cartridge toward the mounting completion position,
• wherein when said openable member is in the closed position, a spacing is provided between said recessed portion and said portion-to-be-urged, and
• wherein said cartridge is a toner cartridge for accommodating a toner to be supplied to a developing device for developing an electrostatic latent image formed on a photosensitive drum.

A cartridge detachably mountable to an image forming apparatus for forming an image on a recording material in a mounting completion position, said image forming apparatus comprising:

• a main assembly provided with an opening through which said cartridge is to be mounted into and demounted from said main assembly;
• an openable member movable between a closed position where the opening is closed and an open position where the opening is open, said openable member including a recessed portion and an urging portion;
• and
• a cartridge,
• wherein said cartridge is a process cartridge comprising,
• a photosensitive member unit including a photosensitive drum,
• a developing device unit, including a developing roller for developing an electrostatic latent image formed on said photosensitive drum, rotatable relative to said photosensitive member unit, and
• an urging member for urging said developing roller toward said photosensitive drum,
• wherein said developing device unit includes a portion-to-be-urged,
• wherein during a closing operation of said openable member, said portion-to-be-urged and said urging portion contact each other to push said cartridge toward the mounting completion position, and
• wherein when said openable member is in the closed position, a spacing is provided between said portion-to-be-urged and said recessed portion.

A cartridge detachably mountable to an image forming apparatus for forming an image on a recording material in a mounting completion position, said image forming apparatus comprising:

• a main assembly provided with an opening through which said cartridge is to be mounted into and demounted from said main assembly;
• an openable member movable between a closed position where the opening is closed and an open position where the opening is open, said openable member including a recessed portion and an urging portion;
• and
• a cartridge,
• wherein said cartridge is a developing cartridge including a developing roller for developing an electrostatic latent image formed on a photosensitive drum, and a portion-to-be-urged, detachably mountable to said main assembly in a mounting completion position,
• wherein during a closing operation of said openable member, said portion-to-be-urged and said urging portion contact each other to push said cartridge toward the mounting completion position,
• wherein when said openable member is in the closed position, a spacing is provided between said portion-to-be-urged and said recessed portion,
• wherein said developing cartridge further includes a side member at one end portion with respect to an axial direction of said developing roller, and
• wherein said side member includes said portion-to-be-urged.

A cartridge detachably mountable to an image forming apparatus for forming an image on a recording material in a mounting completion position, said image forming apparatus comprising:

• a main assembly provided with an opening through which said cartridge is to be mounted into and demounted from said main assembly;
• an openable member movable between a closed position where the opening is closed and an open position where the opening is open, said openable member including a recessed portion and an urging portion;
• and
• a cartridge,
• wherein said cartridge is a developing cartridge including a developing roller for developing an electrostatic latent image formed on a photosensitive drum, and a portion-to-be-urged, detachably mountable to said main assembly in a mounting completion position,
• wherein during a closing operation of said openable member, said portion-to-be-urged and said urging portion contact each other to push said cartridge toward the mounting completion position,
• wherein when said openable member is in the closed position, a spacing is provided between said portion-to-be-urged and said recessed portion,
• wherein said developing cartridge further includes a side member at each end portion with respect to an axial direction of said developing roller, and
• wherein said side member includes said portion-to-be-urged.

A cartridge detachably mountable to an image forming apparatus for forming an image on a recording material, said image forming apparatus comprising:

• a main assembly provided with an opening through which a cartridge is to be mounted into and demounted from said main assembly;
• an openable member movable between a closed position where the opening is closed and an open position where the opening is open, said openable member including a recessed portion and an urging portion;
• and
• a cartridge,
• wherein said cartridge includes a portion-to-be-urged, detachably mountable to said main assembly in a mounting completion position, and is a toner cartridge for accommodating a toner to be supplied to a developing device for developing an electrostatic latent image formed on a photosensitive drum,
• wherein during a closing operation of said openable member, said portion-to-be-urged and said urging portion contact each other to push said cartridge toward the mounting completion position, and
• wherein when said openable member is in the closed position, a spacing is provided between the portion-to-be-urged and said recessed portion.