Oil coating roller, seal ring used for the roller, and fixing device using the seal ring
US6668150B2 · kind B2 · utility
3Cited by
4References
11Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 17, 2002 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Jun 17, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2093
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An oil application roller capable of preventing an oil leak when the roller is left in the state where the rotation axis thereof runs vertically and also capable of preventing an oil escape from the roller in a fixing device. The oil application roller (15) includes a seal ring (25) at respective end portions of the roller (15). The seal ring (25) includes a vent hole (26) extending from an end face of the roller (15) to the outside of the seal ring (25), and the cross-sectional area of the vent hole is not less than 0.01 mm2 and not more than 1 mm2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.