Tape supplying device and tape printing system

A tape printing system, comprising:

• a tape printing device;
• and
• a tape supplying device that supplies a printing tape from a tape roll having the printing tape wound therein to the tape printing device, wherein
• the tape supplying device
• includes a roll supporting part that includes a cylindrical part and a flange part, wherein
• the cylindrical part is at a center of the roll supporting part,
• the flange part expands outside in a radial direction of the cylindrical part,
• the flange part is expanded from an intermediate part that is in an axial direction of the cylindrical part,
• the tape roll is on the flange part in a posture in which a rotation axis of the tape roll crosses a mounting surface on which the tape printing device and the tape supplying device are mounted,
• the tape roll is on the flange part in the posture in which one end surface of the tape roll comes in direct contact with a specific side surface of the flange part, and
• the mounting surface is perpendicular to a gravity direction,
• supplies the printing tape to the tape printing device in a state in which the tape supplying device is not installed on the tape printing device, and
• includes a pedestal part that rotatably support the roll supporting part,
• wherein
• the tape printing device includes a cartridge installation part in which a cartridge is installed,
• the cartridge includes a platen roller and a tape path into which the printing tape fed out from the tape roll is introduced before the cartridge is installed in the cartridge installation part,
• the cartridge installation part has a platen shaft that is inserted into the platen roller when the cartridge is installed, and
• the platen shaft extends in a direction crossing the mounting surface.