<;P>;PROBLEM TO BE SOLVED: To prevent leakage power from having adverse effect on transmission/reception of data in a non-contact data and power transmitter. <;P>;SOLUTION: Depressions 19 and 31 are formed in the casings of a power feeding unit and a power receiving unit made of a non-conductive material, substrates 20 and 32 are contained in the depressions, coils 21 and 33, cores 22 and 34, and transceivers 23c and 35b are attached to the substrates, the coils and cores are attached, respectively, to the surface of each substrate facing the opening side of the depression, the transceivers are attached, respectively, to the backside of each substrate and inserted into recesses 19c and 31c formed in the bottom of the depressions, and through-holes for communication are formed in the substrates corresponding to the transceivers. The casings of a power feeding unit and a power receiving unit are connected such that the coils are arranged opposite to each other and the cores are arranged opposite to each other on the same axis thus ensuring non-contact transmission of data and power. <;P>;COPYRIGHT: (C)2009,JPO&INPIT