Developing device having seal member and recess portion in the developing roller
US9164420B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 27, 2013 |
| Grant date | Oct 20, 2015 |
| Priority date | — |
| Expiry date | Nov 27, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0817
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing device including: a housing; a developing roller including a roller main body having a recess portion recessed inwards in an axis line direction, the recess portion including, a first surface extending in the axis line direction, and a second surface extending from an inner end portion of the first surface towards a direction intersecting with the axis line direction; and a seal member arranged between the housing and the roller main body, wherein, in the axis line direction, the second surface is positioned within a range in which the seal member is arranged, and wherein, in the axis line direction, a distance from an inner end portion of the seal member to the second surface is larger than a length of a part at which the seal member and the first surface overlap with each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.