Cartridge, thermal printer using the cartridge, medium for use with the thermal printer, and method for creating laminated medium

A cartridge for use with a printer comprising:

• a cartridge case;
• a first supply portion retained in the cartridge case and including a heat-sensitive medium defining a thickness in a thickness direction, the heat-sensitive medium having a first surface and a second surface opposite each other in the thickness direction;
• and
• a second supply portion retained in the cartridge case and including an adhesive medium,
• wherein the heat-sensitive medium comprises:
• a base material having visible light transmittance, the base material constituting the first surface;
• a plurality of heat-sensitive layers having visible light transmittance, the plurality of heat-sensitive layers comprising:
• a first heat-sensitive layer configured to produce a first color with a first coloring region when heated above a first temperature;
• and
• a second heat-sensitive layer configured to produce a second color with a second coloring region when heated above a second temperature higher than the first temperature;
• and
• at least one heat-insulating layer having visible light transmittance and including a first heat-insulating layer,
• wherein the cartridge case comprises:
• an opening through which the heat-sensitive medium conveyed from the first supply portion is configured to be exposed to an outside of the cartridge case;
• and
• a guide part positioned downstream of the opening in a conveying direction of the heat-sensitive medium, the guide part being configured to guide the heat-sensitive medium and the adhesive medium bonded to the second surface of the heat-sensitive medium such that the adhesive medium is positioned opposite the base material with respect to the plurality of heat-sensitive layers to create a laminated medium,
• wherein the adhesive medium comprises:
• a double-sided adhesive medium;
• and
• a release paper affixed to the double-sided adhesive medium,
• wherein the double-sided adhesive medium is white,
• wherein the base material, the first heat-sensitive layer, the first heat-insulating layer, the second heat-sensitive layer, and the double-sided adhesive medium are stacked in order from the first surface toward the release paper in the thickness direction,
• wherein the first color and the second color are visible through the base material with the double-sided adhesive medium serving as a background, and
• wherein the first coloring region in the first heat-sensitive layer is not covered by the second coloring region in the second heat-sensitive layer when the laminated medium is fixed on an object and viewed from the first surface in the thickness direction.