MANUFACTURING METHOD OF SUBASSEMBLY AND MANUFACTURING METHOD OF IMAGE FORMING DEVICE

To provide a manufacturing method of a subassembly which can seal a component by a simple constitution without using a machine screw without causing the lowering of accuracy with a mating component even if a correlative component is constituted while being divided into different subassemblies.SOLUTION: A subassembly attached to an image forming device has a frame body, and a component which is held to the frame body so as to be movable within a prescribed range with respect to the frame body, being a component arranged in a prescribed relative position with respect to a main-body side component arranged at a device main body of the image forming device. A manufacturing method of the subassembly in which a sealing member for sealing the component to the frame body is arranged at the frame body so that a moving range of the component with respect to the frame body is fallen within the prescribed range comprises: a first process for assembling the component to the frame body; and a second process for changing the sealing part to a second state for sealing the component to the frame body from a first state not hindering the first process after the first process.SELECTED DRAWING: Figure 5 【課題】関連性のある部品が異なるサブアセンブリに分かれて構成されても、相手部品との精度が低下することなく、また、ビスを使わずに簡略な構成で部品を封止することのできるサブアセンブリの製造方法を提供すること。【解決手段】画像形成装置に取り付けられるサブアセンブリであって、枠体と、枠体に対して所定の範囲で移動可能に枠体に保持される部品であって画像形成装置の装置本体に設けられた本体側部品に対して所定の相対位置に配置される部品と、を有し、枠体に対する部品の移動範囲が所定の範囲となるように部品を枠体に対して封止する封止部が枠体に設けられているサブアセンブリの製造方法であって、枠体に、部品を組み付ける第１の工程と、第１の工程の後に、封止部を、第１の工程を阻害しない第１の状態から、部品を枠体に対して封止する第２の状態へと変化させる第２の工程と、を有する。【選択図】図５