To provide an information storage medium capable of coping with a plurality of frequencies for communication without changing a sticking position of a radio IC tag.
An information storage medium 1 includes a radio communication improvement sheet body 10 and a radio IC tag 20. The radio communication improvement sheet body 10 includes a first spacer 2, an auxiliary antenna 3, a second spacer 4 and a rear face conductor layer 5. The auxiliary antenna 3 is stuck to the second spacer 4 by a first adhesive 3a and the rear face conductor layer 5 is stuck to the second spacer 4 by a second adhesive 5a. A hole S is provided in the auxiliary antenna 3 so that a width W of the hole S is longer than lengths of long side portions 23a and 23b of a loop antenna 21a.
UEDA ATSUSHI
MAENAKA MAMORU
MORITA KAZUHISA
ONIZUKA MAKI
| JP2009049655A | 2009-03-05 | |||
| JP5673854B2 | 2015-02-18 | |||
| JP2009135867A | 2009-06-18 | |||
| JPWO2011078293A1 | 2013-05-09 | |||
| JP2009134709A | 2009-06-18 |
| WO2009131041A1 | 2009-10-29 | |||
| WO2003096478A1 | 2003-11-20 |
Next Patent: INFORMATION COMMUNICATION DEVICE, CONTROL METHOD THEREFOR AND PROGRAM