Non-impact printing device
US4238807A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1978 |
| Grant date | Dec 9, 1980 |
| Priority date | — |
| Expiry date | Dec 22, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A non-impact printing device with selective emission of solid ink particles is disclosed. A rod 19 of solid ink is pressed by a spring 20 in an insulating housing II against an end wall with a nozzle 13 therein. A pulsed high voltage applied between the ink rod and a counter-electrode 16 (which can be behind the paper 25) causes ink particles to be eroded from the rod and ejected through the nozzle on the paper. Printers are described which employ incremental line-feed paper movement, movement of printing devices as just described along the printing line, and selective control of the high-voltage pulsing such as to form characters by a dot matrix technique.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.