An antenna apparatus includes an antenna element having directivity in a vertex direction, an antenna case containing the antenna element, an antenna base coupled to the antenna case, and attached onto an installation face, and an angle regulator adjusting a relative angle between the antenna case and the antenna base. At least a part of a region in which the absorbent layer is provided is adapted to receive a liquid. The control information unit includes an identifier of the recording layer to which the control information unit applies and a recording velocity applicable to the corresponding recording layer. The application of the adhesion promoter is preferably accomplished by distributing the mixture over the TPO elements through a series of nozzles. The method and apparatus of the present invention further provides processes for preparing these compositions of matter as thin films or particles.