Coating apparatus – Control means responsive to a randomly occurring sensed... – Responsive to attribute – absence or presence of work
Patent
1978-06-09
1980-08-12
Martin, Jr., Roland E.
Coating apparatus
Control means responsive to a randomly occurring sensed...
Responsive to attribute, absence or presence of work
118708, 118657, G03G 1509
Patent
active
042167400
ABSTRACT:
In a device for developing electrostatic charge images produced on the surface of a sheet of electrophotographic recording material in a copier which employs a magnet having on its surface a magnetic brush formed of magnetizable toner particles, the copier further presenting a recording material sheet guide path which extends at a distance from the magnetic brush, there are provided contact elements which are disposed in the guide path and which are arranged to be controlled by the leading edge of a sheet of recording material in a manner to be brought into contact with the sheet along a line which lies behind its leading edge to press the recording material against the magnetic brush, the contact elements being controlled in a manner such that they are lifted away from the sheet shortly before reaching the trailing edge thereof in order to prevent the contact elements from contacting the magnetic brush.
REFERENCES:
patent: 1900121 (1933-03-01), Manvell
patent: 3078821 (1963-02-01), McEwen
patent: 3145122 (1964-08-01), Streich
patent: 3207050 (1965-09-01), Limberger
patent: 3450093 (1969-06-01), Gugolz
patent: 3641969 (1972-02-01), Hakanson
patent: 3872829 (1975-03-01), Rattin
patent: 4126100 (1978-11-01), Nishihama
Goodrow John L.
Martin Jr. Roland E.
Olympia Werke AG
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