Fixing apparatus and method of supporting a roller shaft of the

Details Fixing apparatus and method of supporting a roller shaft of the Fixing apparatus and method of supporting a roller shaft of the

1991-08-29

1994-02-01

Smith, Matthew S.

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100 93RP, 100171, 355282, 384276, 384418, 384419, G03G 2100

Patent

active

052836215

ABSTRACT:
A fixing apparatus comprises a forcibly rotated heat roller, a pressing roller rotated in contact with the heat roller, a roller shaft for supporting the pressing roller, a heater for heating the heat roller, a pair of plain bearings for supporting the roller shaft, and springs for supporting each plain bearing and urging the plain bearing towards the heat roller. According to one mode, each plain bearing has a shaft contact portion having an axial length less than that of the plain bearing. According to another mode, the roller shaft is provided with a bearing contact portion having an axial length less than that of the body of the plain bearing.

REFERENCES:
patent: 3616520 (1971-11-01), Bucalo
patent: 3972576 (1976-08-01), Hill
patent: 4757347 (1988-08-01), Tamaoki et al.
patent: 4758202 (1988-07-01), Maciag et al.
patent: 4802439 (1989-02-01), Sugimoto et al.
patent: 5045887 (1991-09-01), Nakamura

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