Toner refill cartridge with a spiral portion to move a plunger
US11397390B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2020 |
| Grant date | Jul 26, 2022 |
| Priority date | — |
| Expiry date | Jan 3, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0673
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An example toner refill cartridge includes a body including a toner accommodating portion to accommodate toner and a toner discharge port provided at an end portion of the body in a longitudinal direction to be in communication with the toner accommodating portion, a first member rotatably supported by the body and having a spiral portion extending in the longitudinal direction, a second member located inside the first member and having a guide groove extending in the longitudinal direction, and a plunger having a guide protrusion which passes through the guide groove to engage the spiral portion, to push the toner inside a toner accommodating portion toward a toner discharge port while being moved in the longitudinal direction as the first member is rotated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.