Print system for ink-jet pens
US5880752A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 1996 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | May 9, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17503
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A variable optical density print system and method for continuous variation of the optical density among successive droplets expelled from the same nozzle, the print system comprising a fluid channel connected to a basis fluid supply and a fluid channel connected to a colorant concentrate fluid supply. Each fluid channel is in fluid communication with a single ink firing chamber. Appropriate amounts of basis fluid and colorant concentrate fluid are delivered to the firing chamber by briefly opening a microvalve positioned within each fluid channel. The fluids mix in the firing chamber and are then ejected as a single ink droplet which possesses a desired optical density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.