PROBLEM TO BE SOLVED: To reduce the amount of remaining medicinal powder in a medicinal powder feeder, and also to perform the earlier detection of medicinal powder discharge completion.SOLUTION: A medicinal powder storage container 42 of the medicinal powder feeders 60, etc., is stored in a case body mounted with dust collecting means 30, 52. An opening/closing covers 51 is arranged at the upper part of the container 42. Blowing means 61, 62 for blowing the air to the medicinal powder storage container 42 are arranged inside the case body. A sending detection members 44 is arranged in front of a medicinal powder sending part 64. Besides, a storage detection member 63 for detecting reflection light passing through the medicinal powder storage container 42 is attached onto the lower surfaces of the opening/closing cover 51. The measurement site 65 is finished like a mirror and the circumferences are matted. A vibration A and blowing C are increased in response to the reflection light detection of the storage detection member 63.COPYRIGHT: (C)2008,JPO&INPIT【課題】散薬フィーダの散薬残量を低減する。また散薬排出完了の検出を早める。【解決手段】集塵手段30,52を装備した筐体の中に散薬フィーダ60の散薬収容器42まで収め、その上方には開閉カバー51を設け、散薬収容器42に風を送り込む送風手段61,62を筐体の中に設置する。また、送出検出部材44を散薬送出部64の先方に設置したのに加えて、散薬収容器42の中を通過した反射光を検出する収容検出部材63を開閉カバー51の下面に付設し、その計測部位65は鏡面状に仕上げ周囲はマット仕上げする。さらに、収容検出部材63の反射光検出に応じて振動Aと送風Cを強化する。【選択図】 図1