There is provided an image forming device that does not require an original image scanning operation upon copying of an original for the second time or later in a device for preventing illegal copying with the use of paper fingerprint information. The at least one pocket on the posterior portion covers a surface area of the posterior portion in an amount of about one percent up to fifty percent of the surface area. The hemostatic member includes a functional passageway through the length of the member so that it may be mounted over a delivery catheter or wire guide for delivery against a vessel puncture or into another vacuslar environment, such as to fill an aneurysm sac. The wind turbine is also equipped with a calibration module, which is configured to determine an effective mass of the electromechanical quantity using the wind speed.