There is provided an inkjet print head including: a nozzle substrate having a nozzle and a pressure chamber formed therein; and a vibrating substrate coupled to the nozzle substrate and transferring pressure from a piezoelectric actuator to the pressure chamber, wherein the vibrating substrate has a plurality of pores absorbing a pressure wave generated in a process of discharging ink. A first image and a second image captured by camera devices are obtained. Specifically, multiple laterally extending tracks are provided for handling multiple circuits. A marking member is positioned in the holder and is capable of moving within the holder. An organic electroluminescence element includes an anode, a cathode, and at least one organic compound layer disposed between the anode and the cathode, wherein at least one of the at least one the organic compound layer contains an organic compound shown in Claim 1. During the execution of the original version, a hardware performance counter is monitored.