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:
Oct. 20, 2026
Filed:
Jan. 18, 2023
Takaya Hanada, Kanagawa, JP;
Takaya Hanada, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A drive controller includes: circuitry configured to: drive a liquid discharge head, including a discharge port and a valve to open and close the discharge port, to discharge a liquid from the discharge port, generate a drive pulse to drive the valve to open and close the discharge port; and the drive pulse including: a first drive pulse to hold the valve at a first displacement amount for a first holding time; and a second drive pulse to hold the valve at a second displacement amount for a second holding time, wherein the second holding time is shorter than the first holding time, and a second average value of the second displace amount is larger than a first average value of the first displace amount.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile