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. 25, 2026
Filed:
Apr. 19, 2024
Kyocera Document Solutions Inc., Osaka, JP;
Hiroomi Nakatsuji, Osaka, JP;
Jun Nakano, Osaka, JP;
Masato Usui, Osaka, JP;
Naoko Kawashima, Osaka, JP;
Abstract
An image forming apparatus includes a recording head, a control unit, an ejection malfunction detecting unit, and an ejection malfunction nozzle determining unit. The recording head ejects ink corresponding to an image to be printed, using arranged nozzles. The control unit determines nozzles corresponding to the image and causes the recording head to eject ink from the nozzles. The ejection malfunction detecting unit causes the recording head to print a first test pattern on a print sheet, and detects a density defect due to ejection malfunction in a scanned image of the first test pattern. The ejection malfunction nozzle determining unit causes the recording head to print a second test pattern if the density defect is detected by the ejection malfunction detecting unit, and not perform printing of the second test pattern if no density defects are detected by the ejection malfunction detecting unit.