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:
Mar. 31, 2026
Filed:
Apr. 13, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A control apparatus that functions as a control unit controlling printing of a fluorescent material patch on a printing medium, an estimation unit to estimate a discharge amount of the fluorescent material based on a reflection intensity obtained by receiving light reflected by the patch on the printing medium, and a correction unit to correct a printing amount of the fluorescent material based on an estimation result. The patch is printed using the fluorescent material and a non-fluorescent material, and at least one dot of the non-fluorescent material overlaps a dot of the fluorescent material. A luminous wavelength of a fluorescent whitening agent contained in the printing medium is an excitation wavelength of the fluorescent material, and the non-fluorescent material absorbs at least one of light in an excitation wavelength range of the fluorescent whitening agent or light in a luminous wavelength range of the fluorescent whitening agent.