A printing apparatus discriminates whether received print data is print data converted into a job packet constructed by a header portion and a data portion or print data which is not converted into a job packet and switches the processing operation in accordance with the print data. On a second side of each cell, approximately opposite the counter-electrode, is a notch or other disruption extending through the semiconductor junction and the transparent oxide layer, thereby exposing the core of the solar cell. The ration of gyration of the pedal can be varied by sliding the pedal along the guide axle andor telescoping the guide axle relative to the fixed axle. However, during normal main power operation, the switch component electrically connects the load center branch circuit to main power, with a branch breaker and a main breaker providing current overload protection for the branch circuit. The biologically active substance in such a material is stabilized against various sterilization methods, including irradiation, wet heat, and chemical sterilization, either in a wet state or a dry state. The invention further relates to the use of the burner pipe or rotary kiln for producing activated carbon.