Patent ID: 7259885
Filing Date: 2007-08-21
Classification: G03G,H04N

Abstract:
1. An image forming apparatus which visualizes an image from a latent image potential on an image bearing body consisting of a charging unit and an exposing unit, and a development potential applied to a developing unit, said image forming apparatus comprising: an environment detection unit adapted to detect at least one of temperature and humidity, wherein, in a first image adjustment mode, a conversion content of a gamma conversion unit is modified according to a development contrast being a difference between the latent image potential and the development potential, the modification of the conversion content of the gamma conversion unit includes weight of a variation of the gamma conversion unit to a variation of the development contrast in a detection result of said environment detection unit and weight of a variation of the gamma conversion unit to a variation of the development contrast in another case, wherein in a second image adjustment mode, the conversion content of the gamma conversion unit is not modified according to the development contrast being the difference between the latent image potential and the development potential, and wherein, in said first image adjust mode, a target development contrast VcontBody in the development contrast is indicated by the sum total of a basic development contrast Vcont, a first development contrast correction ΔVcont a gamma development contrast VcontGamma, in case of executing gamma conversion, is indicated by VcontGamma=Vcont+A·ΔVcont