Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer
Patent
1984-11-16
1986-08-26
Braun, Fred L.
Photocopying
Projection printing and copying cameras
Combined with or convertible to a contact printer
1525651, 1525652, 134 1, 355 3FU, G03G 2100
Patent
active
046079475
ABSTRACT:
In a contact fixing system in which a heat-softened toner image is fixed onto a sheet material by being pressed against the sheet material in a nip between the peripheral surfaces of two circulating fixing members, such as rollers pressing one against the other or a roller pressing against an image carrying belt, residues of the toner of an image and paper dust are removed from the surface of a fixing member in a cleaning zone beyond the fixing nip by moving in rolling contact with that surface a circulating cleaning surface, such as a roller surface, to which the toner adheres preferentially and which has a multiplicity of spaced-apart perforations formed therein and so disposed that with continued movements of the cleaning surface through the cleaning zone a toner layer formed on the cleaning surface is repeatedly pressed thin and excess toner present in it is displaced to the perforations for discharge through them into a cavity inside the cleaning member.
REFERENCES:
patent: 3649992 (1972-03-01), Thettu
patent: 3706491 (1972-12-01), Furman et al.
patent: 3781107 (1973-12-01), Ruhland
patent: 3976814 (1976-08-01), Murphy
patent: 4086871 (1978-05-01), Rydeen et al.
patent: 4324482 (1982-04-01), Szlucha
patent: 4411042 (1983-10-01), Sakata et al.
Ensing Hendrik
Peulen Jacobus H. M.
Braun Fred L.
Carvis Thaddius J.
Johnston Albert C.
Oce'-Nederland, B.V.
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