Toner conveyance device with a film attached to a wall surrounding a conveyance screw
US10816916B2 · kind B2 · utility
0Cited by
1References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2019 |
| Grant date | Oct 27, 2020 |
| Priority date | — |
| Expiry date | Nov 26, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/183
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner conveyance device includes a conveying screw including a screw portion helically wound around an axis of rotation of the conveying screw in an axial direction of the conveying screw and a wall having an opening. The wall surrounds the conveying screw with a clearance relative to the conveying screw in a radial direction of the conveying screw. The toner conveyance device further includes a film attached to the wall at a predetermined distance away from an edge of the opening in the axial direction of the conveying screw.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.