Photocopying – Contact printing – Light boxes
Patent
1991-12-23
1993-10-12
Pendegrass, Joan H.
Photocopying
Contact printing
Light boxes
355290, 219216, 219469, G03G 1520
Patent
active
052530264
ABSTRACT:
A fusing apparatus for fusing toner images onto a substrate. The fusing apparatus has a generally cylindrical pressure roller, a fuser roller, and a device for applying toner release oil to the surface there of. The fuser roller further includes a first length portion that has a generally cylindrical outer shape for contacting the pressure roller to form a fusing nip through which the substrate can be moved. In order to prevent damage to the surface of the fuser roller, the fuser roller includes a second length portion which lies towards an end of the fuser roller away from the fusing nip and has a generally conical outer shape for preventing contact between the fuser roller and pressure roller.
REFERENCES:
patent: 3106767 (1963-10-01), Fox
patent: 4253392 (1981-03-01), Brandon et al.
patent: 4258648 (1981-03-01), Leising et al.
patent: 4594068 (1986-06-01), Bardutzky et al.
patent: 5130754 (1992-07-01), Hishikawa
Eastman Kodak Company
Pendegrass Joan H.
Treash, Jr. Leonard W.
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