Electrophotographic copying method using two toners on magnetic

Details Electrophotographic copying method using two toners on magnetic Electrophotographic copying method using two toners on magnetic

1979-03-01

1980-12-16

Martin, Jr., Roland E.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

430124, 430125, 430126, 430107, 430109, G03G 1309, G03G 1322, G03G 914

Patent

active

042398452

ABSTRACT:
An electrophotographic copying method is carried out by the use of a developing material consisting of a magnetic toner of a volume resistivity within the range of 10.sup.10 to 10.sup.14 .OMEGA..multidot.cm and a non-magnetic and electrically insulating toner. During the development of an electrostatic latent image on a photoconductive support member into a toner image by means of a magnetic brush developing process, particles of both of the magnetic and non-magnetic toners are caused to deposit on an image area of the electrostatic latent image and particles of only the magnetic toner are caused to deposit on a non-image area of the electrostatic latent image. The toner image so developed is subsequently transferred from the photoconductive support member to a sheet of final support material and then fixed.

REFERENCES:
patent: 3262806 (1966-07-01), Gourge
patent: 3816115 (1974-06-01), Gundlach et al.
patent: 3926824 (1975-12-01), Lipani
patent: 4108786 (1978-08-01), Takayama et al.
patent: 4142981 (1979-03-01), Bean et al.
patent: 4165393 (1979-08-01), Suzuki et al.

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