Recording medium
US8431194B2 · kind B2 · utility
1Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2010 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Mar 24, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/506
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention provides a recording medium having 2 or more ink receiving layers on a substrate, wherein an upper layer of the ink receiving layers, which is a layer most distant from the substrate, and a lower layer, which is a layer located just under the upper layer, contain at least one selected from alumina hydrate and alumina, an acid and a hydrophilic binder, the acid contained in the upper layer is a carboxylic acid represented by the general formula [I], and the acid contained in the lower layer is a sulfonic acid represented by the general formula [II]R1—COOH General formula [I]R2—SO3H. General formula [II]
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.