Thermally imageable substrate with encapsulated coreactant

A pressure sensitive latent image ticket comprising:

• a substrate;
• a first layer superimposed on the substrate comprising a plurality of microcapsules with a dye precursor or a solvent;
• a second acidic developer layer coated over the first layer and containing a plurality of particles of a co-reactant, which are coated with a meltable material;
• and
• a third layer coated over the second acidic developer layer.

A method of recording latent information comprising steps of:

• providing a substrate thermal sensitive system comprising:
• a substrate;
• a first layer superimposed on the substrate containing a plurality of microcapsules with a dye precursor or a solvent, wherein the microcapsules are configured to rupture by pressure;
• an acidic developer layer coated over the first layer and containing a co-reactant, wherein a plurality of particles of the co-reactant are coated with a meltable material;
• and
• a scratch-off layer coated over the acidic developer layer,
• wherein when the meltable material is heated by the printing means and the microcapsules are ruptured, the co-reactant reacts with the dye or the solvent to develop color;
• and
• recording non-visible information by selective application of heat to the substrate assembly using a printing means, the meltable material melting in discrete areas where heat is applied from the printing means.