Toner conveying apparatus for supplying toner to a developing apparatus
US7773917B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 14, 2008 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Oct 4, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0634
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner conveying apparatus comprising: a toner conveying member which discharges toner outside a toner accommodating portion; toner conveying passage which receives toner discharged from the toner accommodating portion; and a screw constituted such that a pitch in its region downstream in the toner conveying direction is wider than a pitch in its region upstream in the toner conveying direction; and a drive device which drives the toner conveying member and the screw; wherein if a toner feeding amount per unit drive time of the toner conveying member is defines as V1, and a toner feeding amount per unit drive time in the region of the screw upstream in the toner conveying direction is defined as V2, and a toner feeding amount per unit drive time in the region of the screw downstream in the toner conveying direction is defined as V3, a relation equation of V2≦V1<V3 is satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.