Magnetic microfield donor system

Details Magnetic microfield donor system Magnetic microfield donor system

1976-07-16

1978-01-10

Kee Chi, James

Coating apparatus

With means to apply electrical and/or radiant energy to work...

With electromagnetic and/or electrostatic removal of...

118657, 355 3DD, 428 18, G03G 1508, G03G 1509

Patent

active

040672956

ABSTRACT:
A magnetizable donor is magnetized to define a microfield with a characteristic spacing between pole centers of about 0.010 inches. The strong short range fields between poles pick up and hold a thin uniform and continuous layer of magnetic toner. The layer of toner is then electrostatically charged and brought into close proximity to a receptor, without touching the same, where only latent image areas of the receptor attract toner from the donor layer.

REFERENCES:
patent: 3415224 (1968-12-01), Hudson
patent: 3584601 (1971-06-01), Turner
patent: 3601091 (1971-08-01), Preckshot
patent: 3759222 (1973-09-01), Maksymiak et al.
patent: 3914460 (1975-10-01), Maksymiak
patent: 3998185 (1976-12-01), Weiler

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