| 摘要 |
PROBLEM TO BE SOLVED: To perform stable communication with a non-contact type IC memory attached to a mounting unit. SOLUTION: The resonance frequency of a resonance circuit constituted of a capacitor 203e and a coil antenna 202 connected to the output of an amplifier circuit 203f provided on the communication control board 203 of an image recorder is set so as to move the resonance point of the resonance circuit in the direction of lowering the gain of the amplifier circuit 203f when a communication distance between the coil antenna 202 and the non-contact type IC memory 201 becomes short. |
