Thermochromatic inks, printing methods and kits
US8662893B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2011 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Nov 28, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24802
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The present invention relates to thermochromatic inks. The present invention provides a toy, wherein the toy includes at least one thermochromatic ink. The present invention provides a pre-printed item, wherein when the temperature of the pre-printed item is changed to particular temperatures, the color of a marking, the color of a drawing, or both, change. The present invention provides an interactive item, wherein the visual appearance of the item is changed by changing the color of at least one of a first or second inks. The present invention provides a drawing device, wherein the position of a substrate and a temperature element are such that a thermochromatic ink does not change color unless sufficient pressure is applied to the substrate effective to deflect the surface of the substrate and bring it temporarily sufficiently more proximate to the temperature element. The present invention provides a smart wand for drawing on a substrate that includes thermochromatic ink. The present invention provides a backlight system. The present invention provides a light box.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.