Patent ID: 8577256

Claim:
A process cartridge attachable to and detachable from an image-forming apparatus, comprising: an electrostatic image developer; and at least one selected from the group consisting of an image holding member, a charging unit that charges a surface of an image holding member, a developing unit that develops a latent image formed on a surface of an image holding member with the electrostatic image developer to form a toner image, and a cleaning unit that removes a toner remaining on the surface of the image holding member, wherein the electrostatic image developer comprises an electrostatic image developing carrier comprising a ferrite particle that contains metal elements, the metal elements consisting of iron, magnesium, and manganese, the ferrite particle containing the magnesium element in an amount of from 3.0 wt % to 10.0 wt % and the manganese element in an amount of from 0.2 wt % to 1.0 wt %, a resin layer that covers the ferrite particle, and a toner.