About Irregular Components

Before we start to talk about examples of individual optimization parameters, here an important hint ignoring this fact in the routine can lead to enormous headaches and frustration. 

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We now consider the interface between carrier and toner, as these components interact in a dynamic development system. As we have noted, toner is commonly fabricated by "jet impacting" a brittle pigmented thermoplastic to form irregularly shaped particles of about 12/u m cross-section--particles whose surface comprises resin and carbon black (2, J 3, 58). The carrier cores are magnetic (ferrite or steel), typically about 250/4 m in size and therefore relatively massive. They are generally coated with a dielectric oxide or resin, which participates in the tribo-electrification process (2, it , 59). ... 

The load is assumed to be applied at its center of gravity, and the moment figured about line (ab). Because of the irregular shape of the load diagram, it is difficult to locate the center of gravity. It is more convenient to break it into its component parts (prisms, wedges, pyramids, etc), and figure the moment of each part separately. Obviously, the total moment,, will be the sum of the individual moments. 

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