Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Image reading apparatus for detecting a dirt substance from a white reference image and a document image

Image reading apparatus for detecting a dirt substance from a white reference image and a document image

US Patent 11032443 · Granted Jun 8, 2021

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Medium conveying apparatus for determining thickness of medium2022
Image reading apparatus for detecting a shadow region formed by end of conveyed 2019
Image reading apparatus, control method, and control program2019
Image reading apparatus, control method, and control program2019
Image reading apparatus, control method and control program2019
Image reading apparatus, control method, and computer-readable, non-transitory m2018
Image unit with guide unit movable in direction perpendicular to conveyance path2017
Image-reading apparatus2016
Image-reading apparatus2016
Image reading apparatus and an image processing system including an image sensor2015
Image reading with color shift correction2014
Image-reading system2014