Patent ID: 8032056

Claim:
A developing unit for developing a latent image using developer in an image forming apparatus, comprising: a first frame supporting thereon one or more first processing members operable to assist in developing the latent image, the first frame including at least one jig hole through which the first frame is capable of being placed on a jig during an assembly of the developing unit; a second frame supporting one or more second processing members operable to assist in developing the latent image; one or more first connection parts and one or more third connection parts provided on the first frame; and one or more second connection parts and one or more fourth connection parts provided on the second frame, the one or more first connection parts each being configured to be coupled to a respective associated one of the one or more second connection parts, the one or more third connection parts each being configured to be coupled to a respective associated one of the one or more fourth connection parts, wherein the one or more first connection parts and the one or more second connection parts move relative to each other in a first movement that includes a rectilinear movement so as to be coupled to one another, the third connection parts and the fourth connection parts move relative to each other in a second movement that includes a rotational movement so as to be coupled to one another, wherein the first frame is provided with at least one jig hole configured to regulate movements of the first frame during an assembly of the developing unit.