Inkless reimageable printing paper and method
US7645560B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2008 |
| Grant date | Jan 12, 2010 |
| Priority date | — |
| Expiry date | Sep 8, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/163
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An image forming medium includes a substrate, and an imaging layer coated on or impregnated into the substrate, wherein the imaging layer includes an imaging composition including a photochromic or photochromic-thermochromic material and an infrared absorbent dissolved or dispersed in a solvent or polymeric binder; wherein the infrared absorber absorbs infrared light of a wavelength in a range from about 730 nm to about 1500 nm; and wherein the imaging composition is imageable by light of a first wavelength and erasable in a short time period by a combination of infrared radiation and light of a second wavelength and exhibits a reversible transition between a colorless and a colored state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.