PROBLEM TO BE SOLVED: To provide a reservoir container having a novel structure different from a reservoir container having a conventional structure. SOLUTION: In a reservoir container 10 for injecting a chemical solution, an inner surface of a tubular peripheral wall portion 26 of a bottomed tubular housing body 18 constituting a housing 16 is an inclined inner surface 94 extending toward an opening side. The inclined inner surface 94 is provided with a plurality of guide ridges 96 extending in the length direction of the housing body 18, and the protruding height of the guide ridges 96 corresponds to the inclination of the inclined inner surface 94 of the housing body 18. By gradually increasing toward the opening side, a guide for guiding the moving member 50 in the length direction of the housing 16 in a state of facing the outer peripheral surface 90 of the moving member 50 with a substantially constant contact force or a gap. The surface 98 is composed of the tips of the guide ridges 96. [Selection diagram] Fig. 3【課題】従来構造のリザーバー容器とは異なる、新規な構造のリザーバー容器を提供する。【解決手段】薬液注入用のリザーバー容器１０において、ハウジング１６を構成する有底筒形状のハウジング本体１８における筒状周壁部２６の内面が開口側に向かって広がる傾斜内面９４とされている一方、傾斜内面９４にはハウジング本体１８の長さ方向に延びる複数本の案内突条９６が設けられていると共に、案内突条９６の突出高さが傾斜内面９４の傾斜に対応してハウジング本体１８の開口側に向かって次第に高くなっていることで、移動部材５０の外周面９０に対して略一定の当接力又は隙間をもった対向状態で移動部材５０をハウジング１６の長さ方向に案内する案内面９８が、案内突条９６の先端によって構成されている。【選択図】図３
