Disclosed herein is an image forming apparatus including a main body; a developing unit detachably mounted on the main body and having a photoconductive medium; and a cover pivotably mounted on the main body to cover and support an outer end of the developing unit. The receiver section communicatively couples to the baseband processor and includes a plurality of tuned RF circuits. Powdered Inconel 713 is welded to the Z-notch wear surface by directing an Nd:YAG laser beam upon the material. 5 mole % or less; and when a total sum of at least one member of SiO2, Al2O3 and 3Al2O3.