An image forming apparatus includes at least: an image bearing member; a protective layer forming unit including at least a protective agent supplying member and an image bearing member protective agent; and a rotational speed controlling unit. A surface correspondence between meshes of the models can be created that provides a transfer or sharing of information to include all points of one mesh and all points of the other mesh. The MAN Service may include an Alert Information Service, a Subscriber Selector, and a Broadcast Module to generate an Alert Message. The amount of transverse expansion of the gas in the barrel interior can be controlled by the porosity of the barrel wall to cause any desired amount of gas expansion. The reference resistor has an end connected to the second end of the first winding at a junction point and the feedback circuit is connected to the input and output of the amplifier and also to the junction point.