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:
Jul. 01, 2025
Filed:
Jun. 20, 2023
Canon Production Printing Holding B.v., Venlo, NL;
Canon Production Printing Holding B.V., Venlo, NL;
Abstract
Provided is a device for determining an empty ink state of an ink container for an ink printing system. The ink container has a rigid outer container and an inner, flexible fluid pouch. The inner fluid pouch is connected via a fluid conduit to a pump that is configured to convey fluid out of the inner fluid pouch. The pump is configured to output an electrical signal whose periodicity is proportional to a rotational speed of the pump. The device has an evaluation unit that is configured to monitor the frequency of the electrical signal and, upon the frequency falling below a predetermined threshold, to output that the ink container is empty.