In an image-forming device including an image-carrying member, a developer-carrying member, and a casing having an inner space in which developer is accommodated and the developer-carrying member is supported, both a pushing force and a separating force are not applied to the casing so that the thickness of the casing does not need to be increased. The polarizing film is prepared by subjecting a laminate including a thermoplastic resin substrate and a PVA type resin layer formed on the substrate, to uniaxial 2-stage stretching to reduce a thickness of the PVA type resin layer to 10 \u03bcm or less, and causing a dichroic material to be absorbed in the PVA type resin layer. This result is achieved by simultaneously applying the methods for generating a system of aerodynamic forces, the structural solutions and the piloting methods conceptually linked therewith which are proposed in the present group of inventions to \u201cflying wing\u201d or \u201ccomposite wing\u201d design layouts. The imaging elements in the second sensor row are separated and offset from the imaging elements in the first sensor row by the non-imaging material. The method for providing information to a mobile object includes providing information obtained by an information acquisition system to an interoperable communication system and providing information outputted from the communication system to the mobile object. Either way, the connector may be used, for example, to attach doors, side panels etc.