Abstract: In a device and method for developing a charge image on a photoconductor of an electrophotographic printer or copier, a developer chamber is provided having a first and a second end in which at least a portion of the developer is contained. A mixer is provided for thoroughly mixing the developer in the developer chamber. The mixer generates a flow of the developer that is directed from a first end of the developer chamber to a second end. An inlet for developer is provided at the first end of the developer chamber and an overflow is provided at the second end. The developer exits the developer chamber via the overflow when its level in the region of the second end exceeds a prescribed height. A conveyor conveys the developer that has exited the developer chamber at the overflow toward the inlet.

Abstract: In general, those who are right in front of each other can share actual world events that are generated in the same working space. For example, when an audio or a light of a wave form pattern is generated, by recognizing such an actual world event, both communication apparatuses share the actual world event. Also, a shock wave generated when one communication apparatus is hit with the other is shared by both. One of the communication partners searches a network for a communication partner who is right in front with the actual world event as a clue. Thus, it is possible to perform data communications with a communication partner whose location in the actual world is clear, such as being right in front, but whose identification information in the communication medium is unknown.