Recording with donor transfer of magnetic toner

Details Recording with donor transfer of magnetic toner Recording with donor transfer of magnetic toner

1975-09-26

1977-07-26

Lucas, Jay P.

Recorders

Magnetographic

118647, G03G 1900

Patent

active

040386651

ABSTRACT:
A method and apparatus for selectively transferring magnetic toner from a reservoir to the imaged areas of a copy web. The reservoir is used to develop a donor web in which a multiplicity of microfields have been recorded. The donor web is subsequently passed into non-contacting proximity to a copy web having a latent magnetic image thereon. The toner is selectively attracted to the stronger magnetic forces in the imaged areas of the copy web and remains on the donor web in the non-imaged areas. Another aspect of the invention provides for the neutralization of the donor web microfields prior to the toner transfer to enhance the development process.

REFERENCES:
patent: 3161544 (1964-12-01), Berry
patent: 3566789 (1971-03-01), Kaufer
patent: 3702482 (1972-11-01), Dolcimascolo
patent: 3852525 (1974-12-01), Ichioka
patent: 3935578 (1976-01-01), Condon

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