Patent ID: 8229318

Claim:
An image forming device comprising: a stationary main body; a photosensitive body having a surface on which an electrostatic latent image is formable; a plurality of developer cartridges detachably attachable to the main body and configured to retain therein developing agent, a plurality of first communication ports being formed in one of the stationary main body and the developer cartridges, the developing agent being supplied from each of the developer cartridges through each of the first communication ports; a process unit comprising a plurality of developing units arrayed in a first direction and configured to supply developing agent to the photosensitive body and, a support member configured to accommodate therein an array of the plurality of developing units and movable in the first direction and a second direction opposite to the first direction relative to the main body, the support member being position-fixable to the main body at an operative position for image formation, the plurality of first communication ports being offset from one another in a third direction perpendicular to the first and second directions, and the process unit having a plurality of second communication ports offset from one another in the third direction and aligned with the plurality of first communication ports at the operative position; an inlet shutter mechanism disposed at the process unit and having a plurality of inlet shutters each movable in the first direction and the second direction between a first open position allowing fluid communication between each first communication port and each second communication port and a first closed position shutting off the fluid communication; and a set of first abutment portions provided at the main body, each of the first abutment portions configured to abut on each inlet shutter to move each inlet shutter to a first open position in accordance with the movement of the process unit in the first direction toward the operative position.