Processes for forming platelet materials, such as flakes, including but not limited to, metal flakes, such as aluminum flakes, are described. According to this remaining amount, the size of the tank side channel which is a channel in a canister near the connection section with a connection pathway with a fuel tank is adjusted by a canister throttle control means, andor, the timing of opening and closing of an intake valve is changed by a variable valve timing mechanism. The main pole has a yoke and a pole tip having an ABS facing surface. In a preferred embodiment of the method, input signals are coupled with a pump signal into a first EDF gain section in which the energy absorption mechanisms provide first amplified signals that are correlated with a residual pump signal.