Direct electrostatic printing apparatus having a magnetic brush

Details Direct electrostatic printing apparatus having a magnetic brush Direct electrostatic printing apparatus having a magnetic brush

1997-08-06

2000-11-21

Barlow, John

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 204

Patent

active

061510475

ABSTRACT:
A DEP device is provided that comprises a printhead structure with control electrodes in combination with printing apertures and a magnetic brush assembly delivering a cloud of toner particles in the vicinity of the printing apertures, wherein the toner particles are, together with magnetically attractable carrier particles part of a multi-component developer further and the magnetic brush comprises a magnetic core rotating at a speed equal to or higher than 500 rpm (rotations per minute) and a sleeve rotating at a speed equal to or lower than 10 rpm (rotations per minute).

REFERENCES:
patent: 4447517 (1984-05-01), Yuge et al.
patent: 4545670 (1985-10-01), Itoh et al.
patent: 5325161 (1994-06-01), Saha et al.
patent: 5327169 (1994-07-01), Thompson

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