Metallized scratch-off on-demand printed construct

A direct thermal printable construct comprising:

• a thermally printable medium having front and back surfaces, a base substrate proximate the back surface, and a thermosensitive imaging layer proximate the front surface;
• the thermosensitive imaging layer being subject to color change by thermal printing;
• at least one or more portions of the thermosensitive imaging layer being covered with a release surface;
• at least one or more portions of a metallized layer being releasably bonded to the front surface of the thermally printable medium through the release surface;
• the thermosensitive imaging layer being thermally printable by exposing the metallized layer to localized heat of a thermal printer for inducing local changes in a color of the thermosensitive imaging layer that are obscured from view through both the metallized layer and the base substrate;
• and
• in which the one or more areas of the metallized layer are arranged to be removable from the front surface of the thermally printable medium via the release surface, for revealing underlying local changes in the color of the thermosensitive imaging layer, by a scratching action using a fingernail or coin and are distinguished from other areas of the metallized layer that are protected by a scratch-resistant layer.

A direct thermal printable construct comprising:

• a thermally printable medium having front and back surfaces, a base substrate proximate the back surface, and a thermosensitive imaging layer proximate the front surface;
• the thermosensitive imaging layer being subject to color change by thermal printing;
• at least one or more portions of the thermosensitive imaging layer being covered with a release surface;
• at least one or more portions of a metallized layer being releasably bonded to the front surface of the thermally printable medium through the release surface;
• the thermosensitive imaging layer being thermally printable by exposing the metallized layer to localized heat of a thermal printer for inducing local changes in a color of the thermosensitive imaging layer that are obscured from view through both the metallized layer and the base substrate;
• and
• one or more areas of the metallized layer being arranged to be removable from the front surface of the thermally printable medium via the release surface for revealing underlying local changes in the color of the thermosensitive imaging layer;
• in which at least one of the at least one or more portions of the metallized layer appears as a diffuse reflective surface for reducing apparent changes in a reflectivity of the metallized layer caused by the localized heat of the thermal printer;
• and
• in which the release surface comprises micro-surface geometry variations that are incorporated into the metallized layer for forming the at least one of the at least one or more portions of the metallized layer with a diffuse reflective surface.