Image forming apparatus that can decrease variations in volume and weight of developer in a development casing
US11599044B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 4, 2022 |
| Grant date | Mar 7, 2023 |
| Priority date | — |
| Expiry date | Mar 4, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0888
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes a development device, a toner storage part, a drive unit, a control unit, and an image carrying member. The development device includes a development casing, a developer carrying member, a first stirring transport member, a second stirring transport member, a discharge impeller, and a reverse transport impeller. The development casing includes a first partition wall, a communication part, a developer replenishment port, and a developer discharge part. The first stirring transport member includes a first rotation shaft and a first transport impeller. The second stirring transport member includes a second rotation shaft and a second transport impeller. The control unit can perform a developer discharge mode, in which the first rotation shaft and the second rotation shaft are rotated reversely during a non image formation period, so that the developer around the reverse transport impeller is discharged through the developer discharge part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.