Image forming apparatus for controlling density of image to be formed and detected, controller for whether first and second calibrations are executed based on predicted desnsity and environment condition

Abstract

An image forming apparatus includes: an image forming unit configured to form an image on a sheet based on an image forming condition; an image carrier; a sensor configured to measure a measurement image on the image carrier; a prediction unit configured to predict a density of an image to be formed; a detector configured to detect an environmental condition; and a controller. The controller is configured to: control whether to execute first calibration, in which the measurement image is not formed and the image forming condition is controlled based on the density predicted by the prediction unit, based on the environmental condition detected by the detector; and execute second calibration, in which the image forming condition is controlled based on a measurement result of the measurement image measured by the sensor.

Dependencies are inferred from the claim text.