To provide a simply structured RF tag reading apparatus which can contain in its container multiple articles each with an RF tag installed and enhance reading efficiency of the RF tag by a single operation of reading.
An article container 1 contains a large number of postal envelopes 2 provided with RF tags 3 by stacking and arranging them. A reader antenna 9, which is connected to an interrogator 7 via a coaxial cable 8 is disposed under the article container 1. Maximum gain directions of the RF tags 3 of the respective postal envelopes 2 are uniformly directed to the reader antenna 9. The respective postal envelopes 2 contained in the article container 1 are arranged face to face with each other in a direction orthogonal to the maximum directions of the RF tags 3. Since a maximum gain direction of the reader antenna 9 is oriented toward a base end surface of the article container 1, the maximum gain directions of the RF tags 3 are opposed to the maximum gain direction of the reader antenna 9.
KATO MASAKAZU
MATSUSHITA HISAHIRO
SANO KOICHI
MUROFUSHI NOBUO
MATSUMOTO YASUO
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto