US 11,671,549 B2
Image reading device and image forming apparatus for correcting a read image
Fumiyuki Heishi, Kanagawa (JP); Hiroshi Kubo, Kanagawa (JP); Shinya Kitaoka, Kanagawa (JP); Satoshi Saito, Kanagawa (JP); Yoshito Suzuki, Chiba (JP); Kimiharu Yanagisawa, Tokyo (JP); and Atsushi Kanaya, Kanagawa (JP)
Assigned to Ricoh Company, Ltd., Tokyo (JP)
Filed by Fumiyuki Heishi, Kanagawa (JP); Hiroshi Kubo, Kanagawa (JP); Shinya Kitaoka, Kanagawa (JP); Satoshi Saito, Kanagawa (JP); Yoshito Suzuki, Chiba (JP); Kimiharu Yanagisawa, Tokyo (JP); and Atsushi Kanaya, Kanagawa (JP)
Filed on Aug. 27, 2021, as Appl. No. 17/458,860.
Claims priority of application No. JP2020-158878 (JP), filed on Sep. 23, 2020.
Prior Publication US 2022/0094815 A1, Mar. 24, 2022
Int. Cl. H04N 1/60 (2006.01); H04N 1/00 (2006.01)
CPC H04N 1/6044 (2013.01) [H04N 1/00588 (2013.01); H04N 1/00806 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An image reading device comprising:
an image reader configured to read an image of a document;
a color reference component arranged to face the image reader;
a document conveying portion configured to convey the document to a gap between the image reader and the color reference component; and
processing circuitry configured to
cause the image reader to read the color reference component at a prescribed timing to obtain color reference image data,
generate correction data based on the color reference image data, the correction data being data for correcting data of the image read by the image reader,
move the color reference component relative to the image reader in a direction orthogonal to a direction toward and away from the image reader, and
move the color reference component relative to the image reader in a direction orthogonal to a direction in which the document is conveyed through the gap between the image reader and the color reference component.