Patent ID: 9633285
Date: 2017-04-25
CPC Classifications: B41J,G06K

Claim:
1. An image forming apparatus comprising: an image forming unit configured to form an image on an image carrier, using a plurality of colors; a detection unit configured to detect a detection pattern formed by the image forming unit; a first correction unit configured to correct an image forming condition based on a measurement value of a correction amount related to a misregistration amount or density obtained according to a detection result by the detection unit; a second correction unit configured to estimate a variation amount of the correction amount at a predetermined timing, obtain a prediction value by accumulating the variation value since the first correction unit performed the correction, and correct the image forming condition based on the prediction value; and a determination unit configured to obtain an evaluation value related to a prediction error based on the variation value since the first correction unit performed the correction, and determine whether or not the correction by the first correction unit is performed by comparing the evaluation value and a first threshold.