Radiographic imaging system and access controller for communication access

A radiographic imaging system comprising:

• a radiographic imaging apparatus having an electronic cassette for forming a radiation image and wirelessly transmitting said radiation image;
• and
• an access controller for controlling communication access of said radiographic imaging apparatus, said access controller including,
• a storage medium for storing frequency information of a frequency of a first radio communication channel used by said electronic cassette for transmitting said radiation image, and of a frequency of a second radio communication channel used by a communication device different from said radiographic imaging apparatus and communicable wirelessly;
• a command receiver for receiving a priority request signal for priority of said first radio communication channel to said electronic cassette over said communication device before said electronic cassette starts transmitting said radiation image;
• an overlap detector for referring to said storage medium upon receiving said priority request signal, and checking presence of said communication device in which a radio communication channel of overlap of frequency on said first radio communication channel is used;
• and
• a communication limiter for operating in presence of said communication device with said overlap, and regulating said communication device in communication regulation while said electronic cassette transmits said radiation image.