Patent ID: 8204422

Claim:
An image forming apparatus comprising: a plurality of process cartridges provided for black and for another color, the process cartridges, each comprising: a set of a latent image carrier; a charging unit configured to charge a surface of the latent image carrier; and a lubricant applying unit configured to apply lubricant to the surface of the latent image carrier, wherein the process cartridges for black and for the another color each having a cartridge frame with which the process cartridge is attachable to and removable from an apparatus body, and the cartridge frames of the process cartridges for black and for the another color being of the same type, and wherein the process cartridge for black differs from the process cartridge for the another color in the configuration of the charging unit, and amounts of lubricant applied by the lubricant applying units to the respective latent image carriers differ with respect to the configuration of the charging unit.