Provided are a material for pressure measurement, including a color forming layer that contains microcapsules A encapsulating an electron-donating colorless dye precursor and microcapsules B not encapsulating an electron-donating colorless dye precursor, in which a volume standard median diameter D50A of the microcapsules A and a volume standard median diameter D50B of the microcapsules B satisfy Equation 1; a material composition for pressure measurement; and a material set for pressure measurement:

D50A<D50B  Equation 1.

A kit for making an imprint of a surface of a fish without pigmented ink is disclosed. The kit comprises a developer-coated paper having a developer agent, a nonpigmented activation solution having an activation agent, an applicator, and a set of instructions for applying the activation solution to the surface of the fish with the applicator and making an imprint of the surface of the fish on the developer-coated paper. The developer agent and activation agent are selected so that they produce color when they are combined.

Revealable substrates and methods include an opacifying layer having a plurality of irregular and/or odd-shaped opaque polymer particles defining voids therebetween. At least part of the opacifying layer may be induced to become transparent, for example, by collapsing at least some of the voids to reduce or eliminate internal reflection of light in the opacifying layer. Upon rendering transparent the portion(s) of the opacifying layer, a color material (e.g., ink) disposed underneath the opacifying layer is revealed and/or viewable therethrough.

Revealable substrates and methods include an opacifying layer having a plurality of irregular and/or odd-shaped opaque polymer particles defining voids therebetween. At least part of the opacifying layer may be induced to become transparent, for example, by collapsing at least some of the voids to reduce or eliminate internal reflection of light in the opacifying layer. Upon rendering transparent the portion(s) of the opacifying layer, a color material (e.g., ink) disposed underneath the opacifying layer is revealed and/or viewable therethrough.

The present invention relates to a pressure-sensitive sheet having a function which can permanently conserve an indication showing different concentrations according to the intensity of an external pressure applied to pressure-sensitive paper. The pressure-sensitive sheet proposed by the present invention comprises a set of: a pressure-sensitive paper (10) having a surface to which ink (11) is applied; and a transparent film (20) which is disposed on the pressure-sensitive paper (10) and has a rear surface to which an adhesive agent (21) is applied.

The present invention relates to a pressure-sensitive sheet having a function which can permanently conserve an indication showing different concentrations according to the intensity of an external pressure applied to pressure-sensitive paper. The pressure-sensitive sheet proposed by the present invention comprises a set of: a pressure-sensitive paper (10) having a surface to which ink (11) is applied; and a transparent film (20) which is disposed on the pressure-sensitive paper (10) and has a rear surface to which an adhesive agent (21) is applied.

A security-enhanced document with a removable SOC is provided that is compatible with process color digital imaging, method and system for producing the document enhances production, and expands the aesthetics of the documents.

Provided are a material for pressure measurement, including a color forming layer that contains microcapsules A encapsulating an electron-donating colorless dye precursor and microcapsules B not encapsulating an electron-donating colorless dye precursor, in which a volume standard median diameter D50A of the microcapsules A and a volume standard median diameter D50B of the microcapsules B satisfy Equation 1; a material composition for pressure measurement; and a material set for pressure measurement:
D50A<D50BEquation 1.

Systems and method provide a reveal substrate having a) an opaque polymer sensitive to at least one first application of at least one selected from heat, pressure and light, said opaque polymer becoming transparent upon being subjected to the at least one first application, and b) a bottom substrate layer having one or more colored areas on a top surface thereof, said bottom substrate layer being disposed such that the one or more colored areas are obscured by the opaque polymer prior to being subjected to the at least one first application and are revealed after at least one portion of the opaque polymer is subjected to the at least one first application.

Systems and method provide a reveal substrate having a) an opaque polymer sensitive to at least one first application of at least one selected from heat, pressure and light, said opaque polymer becoming transparent upon being subjected to the at least one first application, and b) a bottom substrate layer having one or more colored areas on a top surface thereof, said bottom substrate layer being disposed such that the one or more colored areas are obscured by the opaque polymer prior to being subjected to the at least one first application and are revealed after at least one portion of the opaque polymer is subjected to the at least one first application.