Multi-color print head
US4400102A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1980 |
| Grant date | Aug 23, 1983 |
| Priority date | — |
| Expiry date | Nov 13, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J19/142
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A dot matrix impact printer for printing a plurality of colors substantially simultaneously. A print head is comprised of three spaced substantially parallel columns of print wires, each column containing an equal number of print wires. Separate independent ink supply sources are provided immediately adjacent the print head, and ink delivery means carry the ink from an associated supply source to the printing tips of the print wires in an associated column. Each of the ink supply containers contain an ink of a different color. The colors may, for example, be the three primary colors. The ink delivery means incorporate capillary means for delivering ink from the ink supply container to the printing tips by capillary action. Printing dots of different colors in either a partially or a substantially overlapping fashion enables any color to be created from the three primary colors. The ink delivery means may deliver ink to the print wires at a location inwardly from the printing tips or may deliver the ink directly to the printing tips. The technique of ink delivery may also be utilized in shuttle printers of the dot matrix type.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.