Heating – Advancing structure flexing – looping or coiling sheet – web... – Internally heated roll
Patent
1976-05-26
1977-09-13
Newton, Dorsey
Heating
Advancing structure flexing, looping or coiling sheet, web...
Internally heated roll
118 60, 118262, F27B 928
Patent
active
040478858
ABSTRACT:
A contact fuser assembly for use in an electrostatic reproducing apparatus including an internally heated metal core cooperating with a resilient backup roll to form a nip through which substrates carrying toner images are moved with the toner images contacting the metal core. The fuser assembly is characterized by the provision of a sump of liquid release agent material which material is provided for coating the surface of the fuser roll structure. In order to apply the liquid release agent material to the surface of the fuser roll structure there is provided a cylindrical applicator member which is partially submersed in the release agent material. A ratchet wheel and pawl arrangement is provided for periodically indexing or moving the applicator member in response to disengagement of the backup roll from the fuser roll through pivoting of an arm supporting the backup roll. To this end, the pawl member is pivotably supported by the pivot arm and actuates the ratchet wheel each time the pivot arm is moved for effecting disengagement of the backup roll from the fuser roll.
REFERENCES:
patent: 2368759 (1945-02-01), Haessler
patent: 2589966 (1952-03-01), Rullo
patent: 3861863 (1975-01-01), Kudsi
Newton Dorsey
Xerox Corporation
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