Developing device with sealing structure to seal shutter for developer inlet of developer supply portion
US11927898B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2021 |
| Grant date | Mar 12, 2024 |
| Priority date | — |
| Expiry date | Jan 27, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0692
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An example developing device includes a developing case, a developer supply portion connected to the developing case and including a supply port, a shutter to open or close the supply port, and a sealing member attached to an outer circumferential portion of the developer supply portion to prevent leakage of a developer through the developer supply portion and the shutter. The developer supply portion includes a slit portion adjacent to the supply port. The sealing member includes a film member having an opening in communication with the supply port, a fixing portion inserted into the slit portion, and an elastic sealing member. An upper surface of the film member contacts an inner circumferential portion of the shutter, and the elastic sealing member is attached onto a lower surface of the film member along an edge of the opening and surrounds the supply port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.