Toner cartridge
US6771922B2 · kind B2 · utility
24Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2002 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Feb 27, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0877
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner cartridge for use in a laser printer has a toner reservoir or hopper in which an agitator is pivoted by a rotating paddle away from its home position proximate an exit opening and then returned to its home position by a spring exerting a predetermined desired force on the agitator after the agitator ceases to be moved by the paddle. The spring may be a cantilever spring, a torsion spring, or a stamped and formed leaf spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.