Photocopying – Contact printing – Light boxes
Patent
1990-07-20
1991-10-29
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355246, 430122, G03G 1506
Patent
active
050619640
ABSTRACT:
An apparatus in which developer material comprising carrier granules and magnetic toner particles is transported closely adjacent to a latent image. The developer roller transporting the developer material is electrically biased. The electrical bias has a wave form that removes a substantially uniform distribution of magnetic toner particle sizes from the carrier granules and develops the latent image therewith.
REFERENCES:
patent: 3262806 (1966-07-01), Gourge
patent: 3914771 (1975-10-01), Lunde et al.
patent: 4102305 (1978-07-01), Schwarz
patent: 4342822 (1982-08-01), Hosono et al.
patent: 4797335 (1989-01-01), Hiratsuka et al.
Bares Jan
Berkes John S.
Grushkin Bernard
Beck J. E.
Fleischer H.
Grimley A. T.
Stanzione P. J.
Xerox Corporation
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