A base support for an image recording material strikes a balance between high flatness and superb stiffness and is favorably available for various image recording mediums capable of providing high quality. The base support comprising at least base paper satisfying a ratio of subsurface internal bond strength A relative central internal bond strength B that is represented preferably by A/B.ltoreq.0.7, and more preferably by 0.3.ltoreq.A/B.ltoreq.0.7. The subsurface internal bond strength is preferably from 90 to 150 mJ.