Process for applying protective overcoat on printed media
US5847738A · kind A · utility
45Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1997 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Jul 11, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M7/0027
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process of forming an overcoat on a printed image to provide improved stability comprising: PA1 a) applying an image layer on a substrate using a liquid ink to form an imaged element; PA1 b) either charging the imaged element to a given polarity or applying a voltage across the surface of the element which is attracted to a conductive surface behind the element; PA1 c) applying colorless, charged particles to the element which causes them to be electrostatically attracted to the surface of the image layer; and PA1 d) heat-fusing the particles to obtain a protective overcoat over the entire surface of the image layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.