Developing cartridge including casing that has recessed portion and boss connecting two opposing walls of casing inside toner chamber, and image forming apparatus using the same
US12259679B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2023 |
| Grant date | Mar 25, 2025 |
| Priority date | — |
| Expiry date | Jul 10, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/1684
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing cartridge is attachable to a drawer that is movable in a first direction relative to a main housing of an image forming apparatus. The developing cartridge includes: a casing having a toner chamber; and a developing roller positioned at one end of the casing in a second direction and rotatable about an axis extending in a third direction. The casing includes: a recessed portion recessed from an outer surface of the casing toward the developing roller; a first wall extending in the second direction; and a first boss positioned inside the toner chamber. The recessed portion is positioned at a center in the third direction of another end of the casing in the second direction. The first wall and the second wall form the toner chamber. The first boss extends from the first wall to be connected to the second wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.