Invention Grant
US08663892B2 Latent electrostatic image developing carrier, process cartridge and image forming apparatus 有权
潜在的静电图像显影载体,处理盒和成像装置

Latent electrostatic image developing carrier, process cartridge and image forming apparatus
Abstract:
A latent electrostatic image developing carrier including: core particles each having magnetism; and a coating layer covering each of the core particles, wherein the latent electrostatic image developing carrier has a shape factor SF-2 of 115 to 150 and has a bulk density of 1.8 g/cm3 to 2.4 g/cm3, wherein the core particles have a shape factor SF-2 of 120 to 160 and have an arithmetic mean surface roughness Ra of 0.5 μm to 1.0 μm, and wherein the coating layer contains a resin and a filler and an amount of the filler contained in the coating layer is 50 parts by mass to 500 parts by mass per 100 parts by mass of the resin contained in the coating layer.
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