Patent ID: 8676086

Claim:
A roller cover, which is configured to be attached to a housing of a cartridge, which accommodates developer and comprises a roller of which a circumference is exposed through an opening longitudinally formed in the housing, the roller cover comprising: a protecting portion, which extends longitudinally in an axial direction of the roller, and which faces the circumference of the roller when the roller cover is attached to the housing; a first end portion, which is provided at one side of the protecting portion; a second end portion, which is provided at an other side of the protecting portion in an orthogonal direction relative to the first end portion, wherein the orthogonal direction is orthogonal to the axial direction, and is also orthogonal to a facing direction, which is a direction between the roller and the protecting portion; a first opposite portion, which is formed continuously with the first end portion, wherein the first opposite portion is fitted to one side of the housing when the roller cover is attached to the housing; a second opposite portion, which is formed adjacent to the second end portion, wherein the second opposite portion is fitted to an other side of the housing in the orthogonal direction relative to the first opposite portion when the roller cover is attached to the housing; and a pair of sidewalls, each of the pair of sidewalls being provided on an end of the protecting portion along the axial direction, wherein one side of each of the pair of sidewalls is connected to a side of the first opposite portion along the axial direction, and wherein an other side of each of the pair of sidewalls is connected to a side of the second opposite portion along the axial direction, wherein each of the pair of sidewalls is formed with a receiving portion having a notched shape, the receiving portion being configured to receive an end portion of the roller along the axial direction, and wherein the roller cover is formed so that a distance between the first opposite portion and the second opposite portion is configured to change.