Solvent and multiple color ink mixing system in an ink jet
US4614953A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1984 |
| Grant date | Sep 30, 1986 |
| Priority date | — |
| Expiry date | Apr 12, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/185
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A color ink jet printing mechanism provides either continuous stream or drop on demand color ink jet printing utilizing a single stream flow of ink. A flow of colored ink is produced, pumped, and synchronized to the operation of a ink jet printer head drop producing mechanism. The ink is produced by mixture of an optional carrier fluid which flows past an injection port chamber, together with dyes which are synchronously injected, mixed with the carrier fluid, to form the colored ink. The ink is then ejected as a dot stream which is impacted upon a paper or other sheet material, forming a continuous flow of colored image. The mechanism uses a single flow of material; it is capable of a wider range of color tonalities, due to the premixing capabilities, than is possible using dithering techniques with three colored inks. The use of dyes rather than individual inks makes it economically feasible to provide a continuous stream ink jet printing head without the use of ink recirculation, thus reducing the overall cost and complexity of a continuous stream ink jet printer for color printing. The preferred embodiment of the invention provides a single ink jet head within which are placed …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.