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US 10,686,959 B2Granted
Image forming apparatus and image forming method
AssigneeRicoh Company, Ltd.
InventorsMitsutaka Iwasaki, Hidetoshi Suzuki
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Abstract
An image forming apparatus includes a rotating body to form an image, a sensor to detect a home position of the rotating body, a processor to acquire image density data of the image formed by the rotating body in odd-numbered rotation and even-numbered rotation of the rotating body separately based on a rotation home position signal output by the sensor, extract an image density fluctuation caused by a rotation of the rotating body, and correct an image forming condition based on the image density fluctuation.
Claims7
An image forming apparatus comprising:
- a rotating body to form an image;
- a sensor to detect a home position of the rotating body;
- and
- a processor configured to
- acquire image density data of the image formed by the rotating body in odd-numbered rotation and even-numbered rotation of the rotating body separately based on a rotation home position signal output by the sensor,
- extract an image density fluctuation caused by a rotation of the rotating body based on the image density data, and
- correct an image forming condition based on the image density fluctuation, wherein , in a first rotation and a second rotation of the rotating body determined by the home position, when a number of the image density data acquired by the processor in the first rotation is less than a predetermined number, the processor continues to acquire the image density data in the second rotation as the image density data in the first rotation.
4 more elements
An image forming method comprising:
- detecting a home position of a rotating body that forms an image;
- acquiring image density data of the image formed by the rotating body in even-numbered rotation and odd-numbered rotation separately while counting a number of rotations of the rotating body based on the home position detected;
- calculating an image density fluctuation of the image formed by the rotating body based on the image density data;
- and
- correcting an image forming condition based on the image density fluctuation,
- wherein , in a first rotation and a second rotation of the rotating body determined by the home position, when a number of the image density data acquired in the first rotation is less than a predetermined number, the method further comprises continuing to acquire the image density data in the second rotation as the image density data in the first rotation.
3 more elements
Dependencies are inferred from the claim text.