| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-contact IC card reader-writer, having a devised casing structure so as minimize the deterioraftion of characteristics an antenna for supplying power to a non-contact IC card and or to exert influence of reflection or the like from a peripheral metal on the antenna, even if the antenna, is put into a casing made of a metal. SOLUTION: The part of the casing, orthogonal to the loop of an antenna part 12 composed of three loop antennas, namely, the metal on upper and back surfaces, is partially cut and for reinforcing this cut casing part, an insulated reinforcing plate, such as Bakelite (R) composed of phenolic resins, namely, upper surface reinforcing Bakelite (R) 13 and a back surface reinforcing Bakelite (R) 14 are stuck. Thus, a loop which is parallel with the loop antennas can be eliminated, an eddy current will not flow as a result, and further since metallic parts are mode to remain, physical strength and metallic luster can be held. |
