Charging roller and image forming apparatus
AssigneeArchem Inc.
InventorsKaori Okumoto, Makoto Otsuru
Life of this patent
Estimating the term…
Abstract
Provided is a charging roller that can achieve excellent image quality and prevent detachment of particles in its surface layer. A charging roller 1 comprises a shaft 2 and, on an outer circumferential side of the shaft 2, at least a base layer 3 and a surface layer 4, wherein the surface layer 4 contains a binder resin 41 and particles 42, and the particles 42 contain 50 mass % or more of a same component A as at least one selected from components constituting the binder resin 41, and a content of the particles in the surface layer is 30 parts to 120 parts by mass with respect to 100 parts by mass of the binder resin.
Claims7
A charging roller comprising a shaft and, on an outer circumferential side of the shaft, at least a base layer and a surface layer that forms a roller surface,
- wherein the surface layer contains a binder resin and particles, and the particles contain 50 mass % or more of a same component as at least one selected from components constituting the binder resin,
- a content of the particles in the surface layer is 50 parts to 120 parts by mass with respect to 100 parts by mass of the binder resin,
- the particles contain an acrylic monomer as the same component as the at least one selected from the components constituting the binder resin, and
- an average particle size of the particles is 3 μm to 30 μm.
Dependencies are inferred from the claim text.