Developing device, process cartridge and image forming apparatus
US6356723B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2000 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Aug 21, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/1648
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In order to prevent toner leaks from both sides of a developing roller disposed within a case accommodating polymerized toner, side seals each having a TEFLON® (polytetrafluoroethylene) felt member on its surface are provided to make sliding contact with a surface of the developing roller. In addition, “Hanarl FL-Z75” (80-90 wt. % hydrofluorocarbon and 10-20 wt. % polytetrafluoroethylene) manufactured by Kanto Kasei Ltd., is used as a lubricating agent for the TEFLON® felt members to make them more lubricative. Accordingly, noise generated by the side seals sliding contact with the developing roller can be reduced. To prevent toner leaks from the sides of the developing roller, a film or resin stopper is disposed at a lower-end front edge of the case to stop the toner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.