Image reading apparatus, image forming apparatus, and image reading method
OwnerKohsuke NAMBARA, Hideki HASHIMOTO +1inventors
InventorsKohsuke NAMBARA, Hideki HASHIMOTO, Tatsuya OZAKI
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Abstract
An image reading apparatus incudes a white reference plate, a reading unit to read the white reference plate; and circuitry to: cause the reading unit to read the white reference plate under a first reading condition before shipment of the image reading apparatus to obtain a first reading value, cause the reading unit to read the white reference plate under a second reading condition same with the first reading condition after replacement of a part of the image reading apparatus after the shipment to obtain a second reading value, and adjust a gray balance coefficient based on the first reading value and the second reading value.
Claims10
An image reading apparatus comprising:
- a white reference plate;
- a reading unit to read the white reference plate;
- and
- circuitry configured to:
- cause the reading unit to read the white reference plate under a first reading condition before shipment of the image reading apparatus to obtain a first reading value;
- and
- cause the reading unit to read the white reference plate under a second reading condition same with the first reading condition after replacement of a part of the image reading apparatus after the shipment to obtain a second reading value;
- and
- adjust a gray balance coefficient based on the first reading value and the second reading value.
An image reading method comprising:
- reading a white reference plate under a first reading condition before shipment of the image reading apparatus to obtain a first reading value;
- reading the white reference plate under a second reading condition same with the first reading condition after replacement of a part of the image reading apparatus after the shipment to obtain a second reading value;
- and
- adjusting a gray balance coefficient based on the first reading value and the second reading value.
Dependencies are inferred from the claim text.