Developer for thermally responsive record materials
US9475328B2 · kind B2 · utility
15Cited by
95References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Apr 13, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M2205/24
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A thermally responsive composition includes a dye and a developer that is free of polyhydric phenols having estrogenic agonist activity greater than or equal to that of bisphenol S. The thermally responsive composition can be used to make BPA-free thermally responsive record materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.