Magnetic inking apparatus for pulsed electrical printing
US4101909A · kind A · utility
3Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1976 |
| Grant date | Jul 18, 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 moving support for supplying particles of magnetic ink. The ink particles are deposited upon the support and subjected to a magnetic field to produce a bead of the particles that rotates as the support moves toward a print position. A number of the particles detach from the bead and remain on the support as mutually spaced aggregates of irregular height. An electrical field of short duration, established in the print position between the particles and a shaped print electrode, charges the particles and attracts them to an intervening recipient sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.