Non-impact printer with magnetic ink reorientation
US4103306A · kind A · utility
5Cited by
6References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1976 |
| Grant date | Jul 25, 1978 |
| Priority date | — |
| Expiry date | Jul 30, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/348
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A non-impact printer having a support for magnetic ink particles loosely distributed on its surface in mutually spaced aggregates of irregular height. An electrical field of short duration, established in a print position between the particles and a shaped print electrode, charges the particles and attracts them to an intervening recipient sheet. The printed image is rendered more uniform by magnetic reorientation of the aggregates of greater height before printing, in a field having components normal to the electrical field in the region of the print position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.