Patent ID: 8958730
Filing Date: 2015-02-17
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an exposure unit configured to expose a photosensitive member in accordance with an image signal to form an electrostatic latent image; a developing unit configured to develop the electrostatic latent image using a toner; a transfer unit configured to transfer a toner image developed by the developing unit to an image carrier; a first sensor configured to measure a temperature of the exposure unit; a determination unit configured to determine whether the temperature of the exposure unit measured by the first sensor is changing at a predetermined gradient or more; a calculation unit configured to calculate a registration adjustment condition; and a registration adjustment unit configured to perform registration adjustment processing based on the registration adjustment condition calculated by the calculation unit, wherein the calculation unit performs calculation processing for calculating the registration adjustment condition based on a result of detecting a position of a patch formed on the image carrier, in a case where the result of the determination by the determination unit indicates that the temperature is not changing at the predetermined gradient or more, and performs prediction processing for predicting the registration adjustment condition based on the temperature of the exposure unit measured by the first sensor, without forming a patch on the image carrier, in a case where the result of the determination by the determination unit indicates that the temperature is changing at the predetermined gradient or more.