Developing device having thickness regulation blade
US8909109B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2013 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | Jan 22, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0812
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing device includes: a casing; a developing roller rotatably supported to the casing; a resiliently deformable blade supported to the casing and extending in an axial direction of the developing roller; and a regulation portion. The developing roller is rotatable in a rotational direction and to carry a layer of developer thereon. The blade has a first surface facing the developing roller. The regulation portion is configured to be in contact with the developing roller to regulate a thickness of the layer of the developer. The blade is formed with a through-hole to allow a material of the regulation portion to pass therethrough to form the regulation portion, the through-hole being exclusively formed in a central area in the axial direction assuming that the blade were divided into three areas each having an identical length in the axial direction with each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.