Developing unit comprising movement member capable of moving between housing position and protruding position and image forming device

A developing unit attachable to and detachable from an image forming device main body, comprising:

• a developer case that accommodates developer;
• a developing roller coupled with the developer case, the developing roller being configured to supply the developer accommodated in the developer case to a photoreceptor;
• and
• a movement member coupled with the developer case, the movement member being configured to move between a housing position where the movement member is substantially housed inside the developer case and a protruding position where the movement member protrudes beyond the developer case,
• wherein the movement member is positioned at the protruding position and pushed by the image forming device main body in a predetermined direction while the developing unit is being attached to the image forming device main body,
• the developer case comprises a long hole,
• the movement member comprises a protruding portion that protrudes beyond the developer case via the long hole,
• the movement member is positioned at the housing position when the protruding portion is positioned at a first position with respect to the long hole,
• the movement member is positioned at the protruding position when the protruding portion is positioned at a second position with respect to the long hole,
• in a process where the developing unit is attached to the image forming device main body, the image forming device main body makes contact with the protruding portion, and the protruding portion is guided from the first position to the second position, and
• in a process where the developing unit is detached from the image forming device main body, the image forming device main body makes contact with the protruding portion, and the protruding portion is guided from the second position to the first position.

An image forming device, comprising:

• an image forming device main body;
• and
• a developing unit detachably attached to the image forming device main body, wherein the image forming device main body comprises:
• a casing comprising a space for housing the developing unit;
• a photoreceptor disposed at a position facing the space;
• and
• a pushing member,
• wherein the developing unit comprises:
• a developer case that accommodates a developer;
• a developing roller coupled with the developer case, the developing roller being configured to supply the developer accommodated in the developer case to the photoreceptor;
• and
• a movement member coupled with the developer case, the movement member being configured to move between a housing position where the movement member is substantially housed inside the developer case and a protruding position where the movement member protrudes beyond the developer case,
• wherein, in a process where the developing unit is attached to the image forming device main body, the movement member moves from the housing position to the protruding position,
• in a process where the developing unit is detached from the image forming device main body, the movement member moves from the protruding position to the housing position,
• the pushing member pushes the movement member in a predetermined direction while the developing unit is being housed in the casing, and
• the movement member moves between the housing position and the protruding position by moving linearly with respect to the developer case.

An image forming device, comprising:

• an image forming device main body;
• and
• a developing unit detachably attached to the image forming device main body, wherein the image forming device main body comprises:
• a casing comprising a space for housing the developing unit;
• a photoreceptor disposed at a position facing the space;
• and
• a pushing member,
• wherein the developing unit comprises:
• a developer case that accommodates a developer;
• a developing roller coupled with the developer case, the developing roller being configured to supply the developer accommodated in the developer case to the photoreceptor;
• and
• a movement member coupled with the developer case, the movement member being configured to move between a housing position where the movement member is substantially housed inside the developer case and a protruding position where the movement member protrudes beyond the developer case,
• wherein in a process where the developing unit is attached to the image forming device main body, the movement member moves from the housing position to the protruding position,
• in a process where the developing unit is detached from the image forming device main body, the movement member moves from the protruding position to the housing position,
• the pushing member pushes the movement member in a predetermined direction while the developing unit is being housed in the casing,
• the developer case comprises a long hole,
• the movement member comprises a protruding portion that protrudes beyond the developer case via the long hole,
• the movement member is positioned at the housing position when the protruding portion is positioned at a first position with respect to the long hole,
• the movement member is positioned at the protruding position when the protruding portion is positioned at a second position with respect to the long hole,
• in a process where the developing unit is attached to the image forming device main body, the image forming device main body makes contact with the protruding portion, and the protruding portion is guided from the first position to the second position, and
• in a process where the developing unit is detached from the image forming device main body, the image forming device main body makes contact with the protruding portion, and the protruding portion is guided from the second position to the first position.