PROBLEM TO BE SOLVED: To provide an X-ray photographing device that is able to easily load cassettes of a plurality of sizes onto a cassette tray and is able to set an X-ray radiation area according to the cassette size.SOLUTION: Each cassette 2 is sandwiched and held from two directions by two pairs of cassette pressing portions 300, 301 of a cassette tray 116. The two pairs of cassette pressing portions 300, 301 each comprise: a mechanism part allowing movement of the two pairs of cassette pressing portions 300, 301 to open or close with respect to a predetermined position 320 in accordance with the center position of the cassette and pressing parts configured to press the two pairs of cassette pressing portion in the direction in which they are closed. Thus, a cassette can be loaded in the cassette tray easily. Even if the sizes of the cassettes differ, the centers of the cassettes are held in the fixed position, and accordingly, an X-ray radiation area can easily be set according to the size of a loaded cassette.COPYRIGHT: (C)2014,JPO&INPIT【課題】複数サイズのカセッテをカセッテトレイに容易に装填でき、しかも、カセッテサイズに応じたX線照射領域の設定が可能なX線撮影装置を提供する。【解決手段】カセッテトレイ116の二対のカセッテ押さえ300,301によってカセッテ2を2方向からそれぞれ挟み込んで保持する。二対のカセッテ押さえ300,301は、それぞれカセッテの中心位置に対応する所定の位置320に対して開閉移動可能にする機構部と、二対のカセッテ押さえをそれぞれ閉じる方向に付勢する付勢部とを備えるように構成する。これにより、カセッテを容易にカセッテトレイに装填できる。また、カセッテのサイズが異なっても、カセッテの中心が一定の位置に保たれるため、装填したカセッテのサイズに応じてX線照射領域の設定を容易に行うことが可能になる。【選択図】図2
