Patent ID: 8085285

Claim:
A method of designing a two-sided thermal printing medium, comprising the steps of: providing a two-sided substrate having a first side and a second side; establishing queries and checkboxes comprising: a first set of queries; a first set of checkboxes for accepting one or more indicia representing responses to the first set of queries; at least one additional set of queries; and at least one additional set of checkboxes for accepting one or more indicia representing responses to the at least one additional set of queries; press-printing the first set of queries and the first set of checkboxes on the first side; press-printing the at least one additional set of queries and the at least one additional set of checkboxes on the second side; treating the first set of checkboxes with a thermochromic coating, forming a first set of treated checkboxes; treating the at least one additional set of checkboxes with a thermochromic coating, forming at least one set of additional treated checkboxes; wherein the steps of press-printing and treating further comprise the steps of: ensuring that the first set of treated checkboxes and the at least one additional set of treated checkboxes do not line up from the first side through the thermal printing medium to the second side, wherein an application of heat to the thermochromic coating does not produce an unintended marking in the first set of checkboxes or the at least one additional set of checkboxes.