According to the report of Ministry of Health, Labour and Welfare published on 7/18/2012, contaminated food made in polluted areas is distributed even in western Japan as expected.
They detected 3.0 Bq/Kg of cesium from milk made in Iwate, and it was sold in Kyoto. (represented in red below)
They also detected 5.5 Bq/Kg of cesium from rice made in Miyagi, and it was sold in Kochi. (represented in blue below)