发明名称 |
Pressure roller having deflection compensating shaft |
摘要 |
A heat roller fixing device which can substantially make uniform the amount of deflection of a backup roller over the axial length thereof to improve a paper feed force at an axially central portion of the backup roller. The heat roller fixing device includes a heat roller rotatably mounted to a frame, and a backup roller pressed against a heat roller by coil springs to follow rotation of the heat roller. The backup roller includes a hollow cylinder, a solid metal shaft inserted in the hollow cylinder and having a pair of large-diameter portions spaced a given distance from each other. One of the large-diameter portions of the solid metal shaft is fixed to the hollow cylinder such as by a pin therethrough, and the solid metal shaft is biased toward the heat roller by the coil springs.
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申请公布号 |
US5732319(A) |
申请公布日期 |
1998.03.24 |
申请号 |
US19960626995 |
申请日期 |
1996.04.03 |
申请人 |
FUJITSU LIMITED |
发明人 |
KOMURO, AKIHIRO;NAKAYASU, HIROFUMI |
分类号 |
G03G15/20;(IPC1-7):G03G15/20 |
主分类号 |
G03G15/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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