Toner refill cartridge having pump for automatic toner refilling
US12271120B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2022 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Jan 5, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0874
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner refill cartridge includes a housing having an opening; a toner storage portion arranged inside the housing and to store a toner; a toner discharge portion at an end of the toner storage portion and to discharge the toner; a pump including a variable volume member capable of retracting and expanding, the pump to provide pressure, through a volume change of the variable volume member, for discharging the toner; a driving force input portion rotatable by a driving force received from outside; and a driving force transmission portion to receive a rotational force of the driving force input portion, convert the rotational force into driving force for changing a volume of the variable volume member, and transmit the driving force to the pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.