| 摘要 |
A fitting construction for a developer holding apparatus includes a housing member (1) and a lid (2). The housing member (1) has a developer chamber having a first wall (1a) that defines an opening. The lid (2) fittingly closes the opening, the lid (2) having a smaller tensile modulus of elasticity than the housing member (1) and a groove (2i) that is formed in a peripheral portion of the lid (2) and receives the projection therein. The groove extends all around the opening. The first wall (1a) fittingly engages into the groove to seal the opening. The lid (2) includes a second wall (2j) that closes the opening, an third wall (2a) that projects from the second wall (2j), and an fourth wall (2b) that proj ects from the second wall (2j) and extends to surround the third wall (2a) to define the groove (2i) between the third wall (2a) and the fourth wall (2b). The first wall (1a) has an outer dimension (D1) equal to or larger than an inner dimension (D4) of the fourth wall (2b). The first wall (1a) has an inner dimension (D2) equal to or smaller than an outer dimension (D3) of the third wall (2a). <IMAGE> |
