Subtractive color hot melt ink reflection images on opaque substrates
US5105204A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1990 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | Jul 27, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D15/16
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In the particular embodiments of the invention described in the specification, an opaque subtractive color ink reflection print having improved color purity resulting from reduced frosting and crystallization of the ink layers is prepared by reheating the ink image to a temperature above the melting point of at least one of the inks and then quenching the image by cooling it at a rate of at least 50.degree. C. per second. In one embodiment, the ink image is produced by an ink jet head applied to a substrate supported on a platen maintained at least 20.degree. C. below the melting point of the inks to inhibit spreading of the inks into the substrate, and the image is thereafter heated to a temperature at least 20.degree. C. above the melting point of at least one of the inks for a period of 3 to 5 seconds and then quenched at a rate of 500.degree. C. per second to produce an image having less than 20% light loss resulting from scattering of light by frosting and crystallization of the ink in the layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.