A wagon (90b) Includes a plurality of horizontal support bars (91f). A separator roll (12b) is stocked while the horizontal support bar is inserted into a core of the separator roll (12b) around which core a separator is rolled. This can prevent deformation and roll misalignment of the stocked separator roll.

An inkjet printer is provided. An inkjet printer includes; a heater for heating up a medium after a printing operation, a second heater for further heating up the medium after the medium is heated up by the heater, a frame to which the second heater is fixed, and a wound roll holder for holding a wound roll that is the medium, being wound like a roll after the printing operation. The wound roll is placed at a position lower than the heater. The second heater is movable in relation to the frame, between a first position, where the second heater is placed at a location of a lower side of the heater and a front side of the wound roll, and a second position, where the second heater is placed at a location of an upper side of the wound roll.

An inkjet printer is provided. An inkjet printer includes; a heater for heating up a medium after a printing operation, a second heater for further heating up the medium after the medium is heated up by the heater, a frame to which the second heater is fixed, and a wound roll holder for holding a wound roll that is the medium, being wound like a roll after the printing operation. The wound roll is placed at a position lower than the heater. The second heater is movable in relation to the frame, between a first position, where the second heater is placed at a location of a lower side of the heater and a front side of the wound roll, and a second position, where the second heater is placed at a location of an upper side of the wound roll.

A wagon (90b) includes a plurality of horizontal support bars (91f). A separator roll (12b) is stocked while the horizontal support bar is inserted into a core of the separator roll (12b) around which core a separator is rolled. This can prevent deformation and roll misalignment of the stocked separator roll.

The present invention provides a long separator roll. A method according to the present invention for producing a battery separator roll includes a connecting step of connecting two or more separators (12b and 12c) to each other along a lengthwise direction so that the battery separator roll is produced.