Patent ID: 11934132
Assignee: RICOH COMPANY, LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An image forming apparatus comprising:
an image forming device configured to form an image on an image bearer based on a prescribed image-forming condition, and
circuitry configured to change the prescribed image-forming condition and correct image-density unevenness in an image-width direction orthogonal to an image conveyance direction of the image bearer,
the circuitry being configured to calculate a corrective value of the prescribed image-forming condition for each one of a plurality of positions in the image-width direction, based on a plurality of unevenness-in-density corrective values for the plurality of positions in the image-width direction and a plurality of relational values indicating a relation between the plurality of unevenness-in-density corrective values and the corrective value of the prescribed image-forming condition,
the circuitry being configured to correct the image-density unevenness in the image-width direction based on the corrective value of the prescribed image-forming condition,
the plurality of relational values corresponding to a plurality of portions in the image width direction including the plurality of positions in the image-width direction,
each one of the plurality of relational values being a factor of proportionality indicating a ratio of the corrective value of the prescribed image-forming condition to the plurality of unevenness-in-density corrective values, and
the circuitry being configured to multiply the plurality of unevenness-in-density corrective values for the plurality of positions in the image-width direction by the plurality of relational values corresponding to the plurality of portions in the image-width direction including the plurality of positions in the image-width direction, to calculate the corrective value of the prescribed image-forming condition for each one of the plurality of positions in the image-width direction.