Image forming apparatus

An image forming apparatus comprising:

• a toner supplying portion including a first attachment portion that supports, in an attachable and detachable manner, a toner container at a predetermined first attachment position;
• and
• a waste toner collecting portion including a second attachment portion that supports, in an attachable and detachable manner, the toner container at a predetermined second attachment position, wherein
• the toner container includes:
• a positioning member configured to, by being engaged with the first attachment portion that corresponds to a type of the toner container, position the toner container to the first attachment position of the first attachment portion;
• and
• a compatible key provided at a position corresponding to the type of the toner container and configured to allow the toner container to be selectively attached to the first attachment portion,
• the first attachment portion includes:
• a first engaging portion configured to position the toner container to the first attachment position by being engaged with the positioning member of the toner container,
• the second attachment portion includes:
• a second engaging portion configured to position the toner container to the second attachment position by being engaged with the positioning member of the toner container,
• the first engaging portion and the positioning member are formed in a shape that allows the toner container of the type corresponding to the first attachment portion to be selectively attached to the first attachment portion, and
• the second engaging portion is formed in a shape that allows the positioning member to be engaged with a toner container of any one of a plurality of types.