A cast iron brake caliper with improved fatigue life, and a process and process equipment for pre-stressing a cast iron brake caliper to provide improved fatigue life, is provided. In this way, the incoming air obtains a thorough contact with the oxygen-rich powder. The second signal processing outputs the image signal which needs less power consumption of the data electrode driving circuit than the first signal processing. The system optionally includes a privacy apparatus that has a curtain capable of at least partially surrounding the waste removal device. Invited trading partners may register for the community, and rules for the community may then be distributed to the registered trading partners.