Patent ID: 7805092

Claim:
A toner container that is removably attached to a toner feed device for feeding toner to a developing unit provided for an image forming apparatus, comprising: a container body including a toner storing portion filled with toner, and a toner discharge aperture arranged in a toner feed recess formed on the outer peripheral surface of the toner storing portion for discharging toner from the toner storing portion by rotationally driving the toner storing portion about the axis thereof as a rotary axis; and a supporting structure, which supports the container body in a rotatable manner by enclosing the outer peripheral surface along the rotational direction of the container body so as to include the area where the toner feed recess is formed, and has a toner feed aperture for feeding the toner discharged from the toner discharge aperture into the toner feed recess, to the outside, characterized in that the supporting structure includes a shutter opening and closing mechanism comprising: an approximately plate-like shutter element that is movable along a fixed direction to open and close the toner feed aperture; a first regulating member on a side of the shutter element, the first regulating member extending toward an opening direction of the shutter element; a second regulating member on a side of the shutter element, the second regulating member extending towards a closing direction of the shutter element; an anti-slide rib for restraining the movement of the shutter element by abutting the first regulating member before the toner container is mounted to the toner feed device, the anti-slide rib projecting downward from a bottom surface of the supporting structure; and wherein as the toner container is inserted in a mounting direction onto a toner feed device, a shutter block on the toner feed device causes the first regulating member to deform, thereby releasing a constraint on movement of the shutter element, and wherein the second regulating member elastically deforms such that a hook of the second regulating member rides over an end of an engaging projection on the toner feed device, and wherein when the toner container is removed from the toner feed device, the hook catches on the engaging projection to pull the shutter closed as the toner container is removed.