Image forming apparatus

An image forming apparatus, comprising:

• a casing having a first opening on a side surface of the casing;
• a first frame and a second frame, both arranged inside the casing;
• a cartridge configured to be attached to and detached from, through the first opening, an attachment position defined between the first frame and the second frame, the first frame and the second frame facing each other across the attachment position;
• and
• a tonner replenishment lever provided to the first frame,
• wherein the cartridge includes:
• a photosensitive drum;
• a developing device accommodating a developing roller configured to supply toner onto a surface of the photosensitive drum;
• a tonner accommodating part;
• a conveying member configured to convey the toner from the tonner accommodating part to the developing device;
• and
• a switching lever configured to switch a state of the conveying member between a driven state in which the conveying member conveys the toner, and a non-driven state in which the conveying member does not convey the toner,
• wherein the toner replenishment lever further comprises a contacting part, the replenishment lever being movable between a first position at which the contacting part pushes the switching lever and a second position at which the contacting part is spaced from the switching lever,
• wherein, when the toner replenishment lever is at the second position, the contacting part is located outside a space through which the cartridge passes when the cartridge is attached to or detached from the attachment position, and
• wherein:
• when the toner replenishment lever is located at the first position, the contacting part pushes the switching lever to switch the state of the conveying member from the non-driven state to the driven state;
• and
• when the toner replenishment lever is located at the second position, the contacting part is spaced from the switching lever to switch the state of the conveying member from the driven state to the non-driven state.