In an image forming device, a process cartridge is detachably insertable in a process frame. The inner housing is pushed by a male connector to move toward the back wall and is floating-supported between the back wall and the male connector via the spring member to move in connecting directions when the male connector is fitted into the outer housing to be locked therein. The splitting circuit receives the local oscillation and produces multiple copies of the local oscillation. Signals coming from the computer are boosted and converted into 1394 type signals by the enhanced signal circuit so as to be compatible to the external peripheral device. An image processing system performs a weighted combination of the acquired images to produce a first image.