Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer
Patent
1986-01-27
1987-08-04
Braun, Fred L.
Photocopying
Projection printing and copying cameras
Combined with or convertible to a contact printer
355 30, G03G 2100
Patent
active
046842420
ABSTRACT:
An electrographic copier has a moveable dielectric member, a developing station for applying toner to selected areas of the dielectric member, and cleaning apparatus for removing residual toner from the dielectric member. The cleaning apparatus includes wall structure defining a cavity open to the dielectric member, and having close-clearance gap regions between the wall structure and the dielectric member magnetically permeable cleaning fluid fills the cavity. Magnetic field producing structure magnetically coupled through the cleaning fluid in the gap regions forms a magnetic seal in the gap regions, thereby inhibiting leakage of the cleaning fluid from the cavity through the gap regions.
REFERENCES:
patent: T893001 (1971-12-01), Fisler
patent: 3483034 (1969-12-01), Ensminger
patent: 3620800 (1971-11-01), Tamai et al.
patent: 3791730 (1974-02-01), Sullivan
patent: 4043298 (1977-08-01), Swackhammer
patent: 4080059 (1978-03-01), Tani et al.
patent: 4111546 (1978-09-01), Maret
patent: 4165172 (1979-08-01), Okamoto et al.
patent: 4252435 (1981-02-01), Manghirmalani
patent: 4361397 (1982-11-01), Katakura et al.
patent: 4459012 (1984-07-01), Allen et al.
patent: 4499849 (1985-02-01), Tomita et al.
patent: 4505577 (1985-03-01), Koizumi
patent: 4571070 (1986-02-01), Tomita
Magnetic Fluid Seals, R. E. Rosensweig et al, Machine Design, Mar. 28, 1968, pp. 145-150.
Braun Fred L.
Eastman Kodak Company
Sales Milton S.
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