Abstract: A card reader device A1 includes: a housing 11; an openable shutter 311 that allows or disallows passing of a magnetic card C into the housing 11; a magnetic head 511 that reads magnetic data of the magnetic card C received in the housing 11; an interfering magnetic field generator 711 provided on a rear surface side of the shutter 311 to generate an interfering magnetic field in at least a region R between the magnetic head 511 and the shutter 311; an interfering magnetic field control unit 61 that controls generation of the interfering magnetic field; and an interfering magnetic field alleviating unit 81 that alleviates an influence of the interfering magnetic field on the magnetic head 511 so that the interfering magnetic field generated by the interfering magnetic field generator 711 does not interfere the reading of the magnetic data by the magnetic head 511.

Abstract: A card reader which makes it possible to read card data from a non-contact IC card, discharge a foreign substance inserted from a card insertion slit, sufficiently ensure the degree of freedom in design, and sufficiently prevent the size of the apparatus main body from becoming large. A coil-shaped circuit pattern is formed on an antenna substrate used as an antenna for radio communication with a non-contact IC card. A part located inside the coil-shaped circuit pattern is cut out to form an opening. Even if the antenna substrate is disposed below the card reader main body, therefore, a foreign substance such as a coin inserted from an insertion slit may be discharged from the opening of the antenna substrate.

Abstract: A card reader which makes it possible to read card data from a non-contact IC card, discharge a foreign substance inserted from a card insertion slit, sufficiently ensure the degree of freedom in design, and sufficiently prevent the size of the apparatus main body from becoming large. A coil-shaped circuit pattern is formed on an antenna substrate used as an antenna for radio communication with a non-contact IC card. A part located inside the coil-shaped circuit pattern is cut out to form an opening. Even if the antenna substrate is disposed below the card reader main body, therefore, a foreign substance such as a coin inserted from an insertion slit may be discharged from the opening of the antenna substrate.