A paper compartment in which roll paper can be held has an opening positioned along the second axial end of the roll paper and a wall positioned along the first axial end of the roll paper in the axial direction. The paper loading member can be removably installed in the paper compartment through the opening. The paper loading member has a flange and a roll support member that projects from the flange and is inserted into the paper. When roll paper is held in the paper compartment, the paper loading member is installed in the paper compartment with a first side of the flange contacting the first axial end of the paper, and the roll support member is inserted into the roll paper. When the paper loading member is installed in the paper compartment, the first side of the flange faces the opening.

A paper conveying device includes a support shaft configured to pivotally support a roll of paper having a center measured in a width direction, a guide movable in the width direction of the roll based on a size of the roll and configured to position the center of the roll in a reference position, and a sensor coupled to the guide and configured to detect that the roll contains less than a threshold amount of paper based on a diameter of the roll.

A roll support device includes: a shaft portion that supports a center hole of a rolled medium in which a medium is wound; a first guide member with which one end surface of the rolled medium in an axial direction of the shaft portion is in contact; a second guide member that is provided on the shaft portion and regulates, in the axial direction, an inner peripheral side of another end surface of the rolled medium in the axial direction; and a third guide member that regulates, in the axial direction, an outer peripheral side of the other end surface of the rolled medium supported by the shaft portion.

A Support for adhesive tape, including: a cylindrical, or substantially cylindrical, body configured to be inserted inside the tubular core of the adhesive tape; a base, associated with the cylindrical body, to which, in turn, a connecting element to an operator's garment, or to an operator's accessory, or to further parts of the operator's equipment, is associated; at least a retractable element, provided along the lateral surface of said cylindrical body, including a control suitable for selectively actuating said retractable element from a retention configuration of the adhesive tape on the cylindrical body, to a configuration of free removal of the adhesive tape from the cylindrical body, and vice versa.

A supply of printable media including a self-locking core. A web of printable media is wound about the self-locking core. The media including a printable surface on first side and an adhesive on a second side. The self-locking core includes a cylindrical body defining a center axis, the cylindrical body having an outer surface and an inner surface. A locking member formed along the inner surface of the body. The locking member extends radially inward towards the center axis and forms a helix having a non-zero helix angle along the inner surface.