A sheet for thermal printing is provided, which may include: a first layer including: a sheet material dyed in a specific color, and a second layer coextensive with the first layer and including a plurality of particles randomly and evenly arranged per a thickness unit and per an area unit of the second layer, the particles being at least partly transmissive to light in the visible light range.

A sheet for thermal printing is provided, which may include: a first layer including: a sheet material dyed in a specific color; and a second layer coextensive with the first layer and including a plurality of particles randomly and evenly arranged per a thickness unit and per an area unit of the second layer, the particles being at least partly transmissive to light in the visible light range.

The invention relates to a heat-sensitive recording material, comprising: a support material in sheet form, a color layer on one side of the support material in sheet form; and a heat-sensitive layer on the color layer, so that the color layer is at least partially covered, the heat-sensitive layer being such that it becomes translucent by local application of heat, so that the underlying color layer becomes visible; and a protective layer on the heat-sensitive layer, the protective layer containing less than 5% by weight of pigments. The invention also relates to its use as a receipt roll, adhesive label (roll), ticket (roll) or as printer paper for mechanical printers or pens.

Direct thermal recording media are designed to operate based on a thermally-induced change of state rather than a thermally-induced chemical reaction between a leuco dye and an acidic developer. The media use two types of solid scattering particles, one of which changes its state from solid to liquid during printing, and the other of which does not. The former particles, upon melting, fill spaces between the latter particles, thus eliminating or substantially reducing light scattering, which makes an underlying colorant visible at selected print locations where heat is locally applied. The media can provide high quality thermally-produced images at print speeds at least as high as 10 inches per second (ips).

A sheet for thermal printing is provided, which may include: a first layer including: a sheet material dyed in a specific color; and a second layer coextensive with the first layer and including a plurality of particles randomly and evenly arranged per a thickness unit and per an area unit of the second layer, the particles being at least partly transmissive to light in the visible light range.

Provided is a recording body including a support body and a concealing layer containing a fusible substance and a binder, in which the fusible substance is a wax having a branched structure containing an aromatic ring.

A sheet for thermal printing is provided, which may include: a first layer including: a sheet material dyed in a specific color; and a second layer coextensive with the first layer and including a plurality of particles randomly and evenly arranged per a thickness unit and per an area unit of the second layer, the particles being at least partly transmissive to light in the visible light range.