Back to results
US 12,529,978 B2Granted
Developing and fur-brush type rollers of cartridge
AssigneeHewlett-Packard Development Company, L.P.
InventorsTaehyun Kim, Yunhyung Bae, Ara Kim, Youngphil Ji, Yongsang Ryu
Life of this patent
Estimating the term…
Abstract
A cartridge to contain a developer includes a developing roller to carry the developer and a fur-brush type supplying roller to form a nip region with the developing roller to supply the developer to the developing roller. A surface layer of the developing roller includes a groove formed on the surface layer to come into contact with the fur-brush type supplying roller.
Claims14
A cartridge to contain a developer, comprising:
- a developing roller to carry the developer, a surface layer of the developing roller including a groove formed on the surface layer;
- and
- a fur-brush type supplying roller to form a nip region with the surface layer of the developing roller and to come into contact with the groove, to supply the developer to the developing roller, wherein a depth of the nip region of formed between the developing roller and the fur-brush type supplying roller is in a range of 100 μm to 350 μm.
A cartridge to contain a developer, comprising:
- a developing roller to carry a developer, and
- a fur-brush type supplying roller to form a nip region with the developing roller to supply the developer to the developing roller,
- wherein
- a surface layer of the developing roller includes a groove formed on the surface layer, and
- a depth of the nip region formed between the fur-brush type supplying roller and the developing roller is set in a range of 100 um to 350 um according to a ratio between a depth of the groove and the depth of the nip region.
2 more elements
An image forming apparatus, comprising:
- a cartridge including,
- a developing roller to carry a developer, and
- a fur-brush type supplying roller to form a nip region with the developing roller to supply the developer to the developing roller,
- wherein
- a surface layer of the developing roller includes a groove formed on the surface layer, and
- a depth of the nip region formed between the fur-brush type supplying roller and the developing roller is set in a range of 100 μm to 350 μm according to a ratio between a depth of the groove and the depth of the nip region, where a percentage (%) of a ratio between the groove depth and the depth of the nip region is in a range of 0.5% to 3.0%.
3 more elements
Dependencies are inferred from the claim text.