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US 5,478,687 AGranted
Carrier for negatively chargeable developer
AssigneeKonica Corporation
InventorsKeiko Ogawa, Meizo Shirose, Michiaki Ishikawa
Life of this patent
Estimating the term…
Abstract
Disclosed is a carrier for a negatively chargeable developer comprising magnetic particles and provided thereon, having a layer comprising a hydrophilic silica having a degree of degree of hydrophobicity of less than 20 and resin particles.
Claims9
A carrier for a negatively chargeable developer comprising magnetic particles onto which a layer of hydrophilic silica, having a degree of hydrophobicity of less than 20, and resin particles are formed by applying a mechanical impact to a mixture of hydrophilic silica and said resin particles.
Dependencies are inferred from the claim text.