US 12,460,922 B2
Sheet identification device and image processing apparatus capable of identifying fiber direction of sheet
Koji Sato, Osaka (JP); Kazuhiro Nakachi, Osaka (JP); Rui Hamabe, Osaka (JP); and Takuya Miyamoto, Osaka (JP)
Assigned to KYOCERA Document Solutions Inc., Osaka (JP)
Appl. No. 18/255,846
Filed by KYOCERA Document Solutions Inc., Osaka (JP)
PCT Filed Nov. 29, 2021, PCT No. PCT/JP2021/043676
§ 371(c)(1), (2) Date Jun. 2, 2023,
PCT Pub. No. WO2022/118799, PCT Pub. Date Jun. 9, 2022.
Claims priority of application No. 2020-201447 (JP), filed on Dec. 4, 2020; and application No. 2020-201448 (JP), filed on Dec. 4, 2020.
Prior Publication US 2024/0011769 A1, Jan. 11, 2024
Int. Cl. G01B 11/25 (2006.01); G06T 7/70 (2017.01); H04N 1/00 (2006.01)
CPC G01B 11/25 (2013.01) [G06T 7/70 (2017.01); H04N 1/00726 (2013.01); H04N 1/00734 (2013.01); H04N 1/00755 (2013.01); G06T 2207/30176 (2013.01); H04N 1/00771 (2013.01); H04N 2201/0094 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A sheet identification device comprising:
a light irradiation portion configured to, when forming an identification image which is an image of an identification region of a surface of a sheet on which image formation or image reading is performed and which is used for identification of a fiber direction of the surface of the sheet, project first pattern light and second pattern light having different dependences on the fiber direction on the identification region,
wherein the first pattern light and the second pattern light have different line widths on the identification region to have different dependences on the fiber direction.