Patent ID: 9651887
Date: 2017-05-16
CPC Classifications: G03G

Claim:
1. An apparatus comprising: a storing unit configured to store first curve information and second curve information, wherein the first curve information is information which indicates a curve condition of an image which is obtained in a case where the image is formed on the recording medium without using either of the first curve information and the second curve information, and the second curve information is information which indicates a curve condition of a laser; an inputting unit configured to choose either of the stored first and second curve information and to input the chosen curve information; and an updating unit configured to form an image which is based on the input curve information on a recording medium, measure an amount of a shift of the formed image from a predetermined reference, and update the stored first curve information on the basis of the measured amount of the shift, wherein in a case where the inputting unit chooses the stored first curve information and inputs the chosen first curve information, and an amount of a shift based on the input first curve information which is measured by the updating unit is more than a predetermined threshold value, the inputting unit chooses the stored second curve information and inputs the chosen second curve information.