Heat-sensitive recording material having intermediate layer that contains hollow particles
US10300726B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2016 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Jun 3, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M2205/40
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a heat-sensitive recording body that is excellent in high-speed recording properties, that makes it possible to perform high-quality image recording with a high sensitivity even at a low thermal energy, and that is excellent in printability and economy. A heat-sensitive recording body containing a support, an intermediate layer, and a heat-sensitive color forming layer comprising as main components a leuco dye and a developer, the intermediate layer and the heat-sensitive color forming layer stacked on the support in the order as mentioned, wherein the intermediate layer contains a hollow particle containing a hollow core portion formed by drying a solvent for an alkali-swellable aqueous gel comprising a (meth)acrylic-based copolymer having an acid value of 200 to 400 mgKOH/g, and a resin portion encapsulating the core portion and having a non-alkali-swellable outermost layer of the particle, the non-alkali-swellable outermost layer formed using a hydrophobic monomer, and the hollow particle has an average particle diameter of 1.5 to 3.5 μm and a percentage of hollowness of 60 to 85%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.