Foreign substance collection apparatus, process cartridge, and image forming apparatus
US11841668B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2022 |
| Grant date | Dec 12, 2023 |
| Priority date | — |
| Expiry date | Apr 15, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/0089
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A foreign substance collection apparatus includes: a frame body; a photosensitive drum; a cleaning roller which collects foreign substances from a surface of the photosensitive drum; a collecting roller which further collects the foreign substances having been collected by the cleaning roller from the cleaning roller; and a scraping member which scrapes off the foreign substances from the collecting roller. A foreign substance collecting portion included in the frame body has, in a posture during use: a first inner bottom surface which is positioned below the scraping member in a gravity direction; an outer bottom surface which is positioned further below the first inner bottom surface; and a connecting surface which intersects the first inner bottom surface and the outer bottom surface and which connects the first inner bottom surface and the outer bottom surface with each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.