This disclosure relates to a process for regenerating a catalyst composition to improve the aging rate in subsequent cycles. Front and rear wheels are mounted on the front tire support fork and on the frame. Digital triggering circuitry is configured to output a trigger signal indicative of a start of an integration time period responsive to a selected number of one or more of the detector cells transitioning from the first digital value to the second digital value. When the user’s information has been recorded on the RFID tag, a mark indicating the writing of information into RFID tag is attached to the printing sheet, whereby the user can easily recognize the presenceabsence of information recorded on RFID tag.