A laryngoscopes blade of the disposable variety for use with a Fiber Optic Green System Handle having a blade portion made from stainless steel and a heel portion made from thermoplastic resin. Also, a turbine may be provided with the leaf seal so as to reduce gas leakage from the high-pressure-region to the low-pressure-region as well as to control the frictional wear between the planar plates and the rotation shaft. The image forming apparatus includes an amorphous silicon photoconductor drum having a heater provided therein; a charging device; and a rotating member that cleans the surfaces of the amorphous silicon photoconductor drum using titanium oxide particles included in toner particles. Using a window having a size of 2\xd72 pixels, a reducing unit generates one pixel from the window after replacement. The extension comprises a hollow tubular member having a roughened outer surface and a closed first end.