Image forming apparatus

Details Image forming apparatus Image forming apparatus

1993-07-26

1994-12-20

Grimley, A. T.

Recorders

Electric recording

Electrochemical

346159, 355245, 355265, G01D 1506

Patent

active

053749499

ABSTRACT:
An apparatus and method for printing directly on plain paper, utilizing an arrayed control grid having a plurality of toner slots. An alternating electrostatic field in a space between a toner carrier and a backing electrode gives toner a vibrational motion to prevent a toner clog at the slot. The field is also formed to repel the clogged toner back to the toner carrier, or to fall it down on a paper on the backing electrode during no print is performed to clean the control grid. A constitution of conductive and dielectric materials for the members assures to form the field.

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patent: 4478510 (1984-10-01), Fujii et al.
patent: 4480907 (1984-11-01), Vackier
patent: 4491855 (1985-01-01), Fujii et al.
patent: 4610531 (1986-09-01), Hayashi et al.
patent: 4868600 (1989-09-01), Hays et al.
patent: 4930438 (1990-06-01), Demizu et al.
patent: 5036341 (1991-07-01), Larsson

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