Patent ID: 8801307

Claim:
A substrate cartridge adapted to accommodate a flexible strip-like sheet substrate for forming an electric circuit thereon, the substrate cartridge comprising: a cartridge mainframe that has an opening which extends in a widthwise direction of the substrate and through which the substrate is carried in/out in a striped direction of the substrate; a roller which is provided to be rotatable around a center axis along the widthwise direction and to wind up the substrate in the striped direction to accommodate the substrate in a roll shape; and a cap member which is movable provided to open or close the opening; a mount portion which is provided to the cartridge mainframe and is detachably connected to an external connecting portion of a processing apparatus of the substrate; and a switching mechanism which switches the cap member to an opened state when the mount portion is connected to the external connecting portion and switches the cap member to a closed state when the mount portion is detached from the external connecting portion.