| abstract |
(57) [Summary] (Modifications) [Problem] A relatively heavy cartridge can be stably placed on the same cartridge without crushing or deforming the cylindrical main body of the lower cartridge. Provide a canister that minimizes dead space. A metal body (3) has a deformation area (3e), which deformation area is designed to be centered inside a straight foot (4a) of a concave bottom (4) of another canister (2) stacked on the canister (1). A conical portion 3e1 is provided, and furthermore, an especially adjacent convex and circular annular portion 3e is provided. 2, the annular portion 3e2 is designed to support the concave annular portion 4b of the concave bottom, and the convex annular portion 3e2 comes close to the straight foot of another canister 1. |