An electrophotographic photoreceptor and an electrophotographic imaging apparatus include an asymmetric naphthalenetetracarboxylic acid diimide derivative. A N-bit block data to be stored in a memory device is received. The detector receives x-rays emitted by the x-ray source. In another embodiment of the process, a magnesium silicate is reacted with a caustic material to produce magnesium hydroxide. In addition, the mechanisms redirect execution of the portion of code to the instruction cache runtime system in response to a determination that the target instruction cannot be determined to be present in the instruction cache. The elevator cage is entered by people on at least one first or one second access floor.