The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 04, 2020
Filed:
Feb. 28, 2019
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Masato Eiyama, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 1/23 (2006.01); H04N 1/60 (2006.01); H04N 1/00 (2006.01); H04N 1/034 (2006.01);
U.S. Cl.
CPC ...
H04N 1/2323 (2013.01); H04N 1/0075 (2013.01); H04N 1/00724 (2013.01); H04N 1/00726 (2013.01); H04N 1/00734 (2013.01); H04N 1/034 (2013.01); H04N 1/6008 (2013.01); H04N 1/6041 (2013.01); H04N 1/6044 (2013.01); H04N 2201/0094 (2013.01);
Abstract
A reflected light amount from a patch under a first light source is acquired, and a reflected light amount from the patch under a second light source whose wavelength band is different from the first light source is acquired. The type of a printing medium on which the patch is printed is determined based on the ratio of the two acquired reflected light amounts.