Ink jet printing processes with microwave drying
US5563644A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1992 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Feb 3, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M7/009
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a printing process which comprises applying in imagewise fashion to a substrate an ink composition which comprises an aqueous liquid vehicle, a colorant, and a drying component selected from the group consisting of zwitterionic compounds, and subsequently exposing the substrate to microwave radiation, thereby drying the images on the substrate. In a preferred embodiment, the invention is directed to a thermal ink jet printing process which comprises (1) incorporating into a thermal ink jet printing apparatus an ink composition which comprises an aqueous liquid vehicle, a colorant, and a drying component selected from the group consisting of zwitterionic compounds; (2) heating the ink in an imagewise pattern to cause bubbles to form therein, thereby causing droplets of the ink to be ejected in an imagewise pattern onto a substrate, thereby generating images on the substrate; and (3) exposing the substrate to microwave radiation, thereby drying the images on the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.