Photocurable clear ink composition for inkjet printing
US11230647B2 · kind B2 · utility
2Cited by
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12Claims
0Family size
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Key dates
| Filing date | Jun 30, 2017 |
| Grant date | Jan 25, 2022 |
| Priority date | — |
| Expiry date | Jul 26, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2003/2227
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Clear inks are prone to heat-induced micro-gelling that can cause their storage stability to drop, and micro-gelling may also occur in clear inks with the passage of time, in which case their inkjet discharge property may drop. As a solution, a photocurable clear ink composition for inkjet printing is provided, which contains a photopolymerizable compound, a photopolymerization initiator, and an inorganic filler of 1 to 200 nm in average grain size accounting for 0.05 to 5.0 percent by mass in the composition, and whose visible light transmission factor is 30% or higher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.