Sheet roll producing apparatus, sheet roll discharging apparatus, and core supplying apparatus

A sheet roll forming system for forming sheet rolls by winding a heat transfer recording sheet, obtained by forming a transfer ink layer on one surface of a base, around an outer periphery of a plurality of cores, said combination comprising:

• a core supplying apparatus comprising:
• a cantilever shaft supporting a plurality of cores and having a rotation drive portion, said cantilever shaft being an air shaft that can increase a diameter thereof when air is supplied to an inside of the cantilever shaft;
• a tray disposed below the cantilever shaft so as to be movable up and down and to move in a direction of an axis of the cantilever shaft for carrying the plurality of cores;
• core stoppers provided at constant intervals corresponding substantially to a length of each of the cores on the tray, being capable of vertically moving with respect to the tray and pushing the cores when the cores on the tray are to be set on said cantilever shaft from a free end of the cantilever shaft;
• and
• a charge and exhaust apparatus for charging and exhausting air into and out of, respectively, said cantilever shaft, said charge and exhaust apparatus being provided in the vicinity of said cantilever shaft,
• a sheet roll discharging apparatus comprising:
• the cantilever shaft supporting a plurality of sheet rolls wound on the plurality of cores, respectively, and having a rotation drive portion, said plurality of cores being the plurality of cores supported by the cantilever shaft of the core supplying apparatus;
• a tray provided below the cantilever shaft;
• and
• a stopper provided on said tray and being capable of vertically moving with respect to the tray, for pushing a rotation-drive-portion-side end of one of the sheet rolls located on a rotation drive portion side.