Magnetic dot matrix printing method and apparatus
US4392754A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 10, 1982 |
| Grant date | Jul 12, 1983 |
| Priority date | — |
| Expiry date | Feb 10, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/43
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for character-by-character magnetic printing on plain paper, using a dot matrix format; a sheet of paper is positioned on the surface of a thin, elongated strip platen of permanent magnet material and a magnetic printhead comprising a columnar array of electromagnets scans the platen. Selective energization of the electromagnets, during each scan, magnetizes dot-size portions of the platen in dot matrix patterns defining magnetic images of the characters in a line of text; limited quantities of toner are applied to the paper generally concurrently with formation of the magnetic images to develop those images as visible characters, which are subsequently fixed on the paper surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.