US Patent Issued to Ricoh on Sept. 30 for "Image processing device, image forming apparatus, image processing method, and non-transitory recording medium" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,427,787, issued on Sept. 30, was assigned to Ricoh Co. Ltd. (Tokyo).

"Image processing device, image forming apparatus, image processing method, and non-transitory recording medium" was invented by Paru Kondo (Kanagawa, Japan), Hiroaki Fukuda (Kanagawa, Japan), Dai Kurabayashi (Kanagawa, Japan) and Takuroh Sawada (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An image processing device includes: a first contamination detection circuit to detect contamination on an image reading device using a first relative threshold value calculated from a standard deviation of pixel values of a same-density region in a read image obtained by the imag...