A switching apparatus having a function for processing a malicious call, and an operating method of the switching apparatus, which are capable of outputting, via a designated path, the CID of a caller generating a malicious call, and allowing a third party to record the call speech of the malicious caller. This invention incorporates the principle of having two valve pins in which their movements are back-to-back and can be independently opened and closed as controlled by stepper, servo or linear motors linked to a separate independent tool controller. The process cartridge and the image forming apparatus are used in the image forming method. A gain controller multiplies the edge component by a control signal from the inverse gradient RAM table to generate an edge enhancement signal which is in turn added to the image signal to obtain an edge-enhanced signal. An adaptive feed-forward control signal is generated which compensates for the ripple force, thus allowing for more precise tracking performance to be achieved. The first portion is joined by brazing to the second portion.