IMAGE FORMING DEVICE AND IMAGE FORMING METHOD

摘要

Provided is a technique for obtaining an always stable output image in image formation using toner.  A supplier (1217) supplies a determined supply amount of toner.  A developer (1206) agitates the supplied toner and supplies the agitated toner to an electrostatic latent image formed on a photosensitive drum (1203), thereby developing the toner image onto the photosensitive drum (1203).  A correction amount calculation unit (1106) calculates a function model that approximates toner charging amount variation characteristics, using a toner consumption for printing a print target image, a toner supply amount for printing the print target image, and a toner agitating time, thereby estimating a toner charging amount.  Using the estimated toner charging amount, at least one of an image processing condition and a process condition is controlled.