Solvatochromic visual indicator and the use of the same
First Claim
1. A visual indicator system comprising an indicator panel having a graphic region with a hidden message graphic and a masking graphic comprising a solvatochromic dye, and a solvent applicator comprising a substantially transparent sheet-like substrate having first and second surfaces, and a solvent disposed on the first surface of the substrate between the substrate and the masking graphic, the size of the sheet-like substrate corresponding to the size of the masking graphic.
3 Assignments
0 Petitions
Accused Products
Abstract
A graphic and/or message display system is described. The graphic and/or message display system functions to develop over a period of time a hidden graphic or message on an indicator panel or display area. The hidden graphic or message is revealed when an obscuring graphic reacts with a solvent to change color become at least substantially transparent. The graphic and/or message display system may be used as a stand-alone device or may be incorporated as part of various articles or products, for instance, as a positive reinforcement or a reminder to perform a task. Methods for using the graphic and/or message display system are also described.
64 Citations
14 Claims
- 1. A visual indicator system comprising an indicator panel having a graphic region with a hidden message graphic and a masking graphic comprising a solvatochromic dye, and a solvent applicator comprising a substantially transparent sheet-like substrate having first and second surfaces, and a solvent disposed on the first surface of the substrate between the substrate and the masking graphic, the size of the sheet-like substrate corresponding to the size of the masking graphic.
Specification