Print media
US11338604B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2019 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Apr 30, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M2205/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A print medium can include a cellulose-based paper substrate with a first surface and a second surface opposite the first surface. The first surface can be treated with an electrically charged treatment layer. An ink-absorbing layer can be positioned on the electrically charged treatment layer. The ink-absorbing layer can include a polymeric binder and surface-activated fumed silica particles. The surface-activated fumed silica particles can include fumed silica particles that are surface-activated with charged multivalent aluminum salt and organosilane reagent. In further detail, an ink-receiving layer can be positioned on the ink-absorbing layer. The ink-receiving layer can include amorphous silica particles, alumina particles, or a combination thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.