Image forming apparatus forming images using jumping toner/devel

Details Image forming apparatus forming images using jumping toner/devel Image forming apparatus forming images using jumping toner/devel

1998-05-01

2000-06-27

Brase, Sandra

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 206

Patent

active

060798181

ABSTRACT:
An image forming unit has a toner supplying section and a printing section, and directly forms an image with the developer, in accordance with the image signal, onto a sheet of paper as the recording medium. The control electrode has a shield electrode in which the positions of the openings, the applied voltage and the diameters of the openings are controlled so that the jumping of the toner passing through the gates can be controlled finely and uniformly without being affected by the distances from the toner support to the opposing electrode and control electrode. A further shield electrode can be provided to perform further precise toner control and hence produce highly qualified images.

REFERENCES:
patent: 3898674 (1975-08-01), Koch
patent: 5596356 (1997-01-01), Lee
patent: 5781218 (1998-07-01), Wakahara et al.
patent: 5874973 (1999-02-01), Wakahara

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