Expanding the color gamut of thermochromic materials
US11207907B2 · kind B2 · utility
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21Claims
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Key dates
| Filing date | Nov 2, 2020 |
| Grant date | Dec 28, 2021 |
| Priority date | — |
| Expiry date | Nov 2, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M7/0081
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Formation of a multi-colored image in thermochromic material involves controlling operation of first, second, and third heat sources. The first heat source heats pixels of the thermochromic material to activate the pixels. The second and third heat sources are selectively controlled to heat different sets of pixels using neither, one, or both of the second and third heat sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.