Patent ID: 8103191

Claim:
An image forming apparatus comprising: an image holding member comprising: a substrate having a surface having regular reflectance in a range of about 30% to about 95% with respect to light having a first wavelength; and a subbing layer having a light transmittance of about 50% or greater per unit thickness of the layer with respect to light having the first wavelength and a photosensitive layer having absorption with respect to light having a second wavelength that is different from the first wavelength, the subbing layer and the photosensitive layer being layered on the substrate in this order; a charging unit which charges the image holding member; a latent image-forming unit which forms an electrostatic latent image on the image holding member by exposing the image holding member charged by the charging unit with light having the second wavelength; a development unit which develops the electrostatic latent image using a toner and forms a toner image corresponding to the electrostatic latent image on the image holding member; a measuring unit which comprises: an irradiation unit which irradiates light having the first wavelength onto the image holding member; and a detection unit which detects reflected light generated by the irradiation of light from the irradiation unit, and measures the density of the toner image formed on the image holding member based on the reflected light detected by the detection unit; and a control unit which controls the latent image-forming unit so that the latent image-forming unit forms the electrostatic latent image corresponding to a pictorial image having a predetermined density and, based on a measurement result of the density of the toner image obtained by the measuring unit, controls at least one selected from: a charge potential at which the image holding member is charged by the charging unit; an exposure amount at which the image holding member is exposed by the latent image-forming unit; and a development potential at which the toner is developed by the development unit, so that the measurement result obtained by the measurement unit becomes substantially equal to the predetermined density.