Non-impact dot matrix printer
US4441112A · kind A · utility
Inventor
Key dates
| Filing date | Mar 5, 1982 |
| Grant date | Apr 3, 1984 |
| Priority date | — |
| Expiry date | Mar 5, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/005
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The non-impact dot matrix printer is a high speed alpha-numeric, electric spark discharge printer that utilizes a rotating perforated dielectric belt in cooperative association with a laminar stack of insulated electrical conductors to control electric spark discharge printing on an electrical conductive erosive surface of a recording medium. The belt is disposed between the laminar stack and the conductive surface of the recording medium, and alpha-numeric characters are printed on the printing surface by applying a controlled source of voltage between the printing surface and the stack to cause spark discharging through the perforations in the rotatable belt, under the overall control of appropriate electronic circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.