section 32 an erasing means as disclosed for example in u s pat no 4 400 619 may be used the image read out section 31 the erasing section 32 and the circulation and conveyance means 40 are housed in a read out and erasing section case 30 made of a lighttight material as shown in fig1 the circulation and conveyance means 40 comprises a plurality of conveyance systems constituted by rollers and belts specifically the means 40 comprises a first conveyance system 41 for conveying the stimulable phosphor sheet 4 out of the erasing section 32 after erasing a third conveyance system 43 having one end facing the sheet conveyance port 50 for conveying the erased sheet 4 to the sheet holding means 13 via the sheet conveyance port 50 and conveying the sheet 4 carrying a radiation image stored therein at the sheet holding means 13 out of the sheet holding means 13 via the sheet conveyance port 50 a fourth conveyance system 44 for conveying the sheet 4 carrying the radiation image stored therein to the image read out section 31 a second conveyance system 42 having one end facing the third conveyance system 43 and the other end facing the first conveyance system 41 and the fourth conveyance system 44 for conveying the erased sheet 4 from the first conveyance.