Method and system for forming temporary images
US7564030B2 · kind B2 · utility
3Cited by
0References
17Claims
0Family size
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Key dates
| Filing date | Feb 13, 2007 |
| Grant date | Jul 21, 2009 |
| Priority date | — |
| Expiry date | Jan 23, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The presently described embodiments comprise a system that includes a color changing medium, an erasing device using heat or long wavelength infrared light as the erasing source, a writing device that can imagewise apply a UV light to write the image on the media, and a transport to transport the media along a paper path to be seen by the erasing device and the writing device. The system could also function in an alternative way. The image could be “erased” to the all dark state using light (e.g. ultraviolet light) and then heated or illuminated using, for example, infrared light in imagewise fashion to produce the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.