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:
Apr. 14, 2026
Filed:
Dec. 12, 2023
Riso Technologies Corporation, Tokyo, JP;
Jun Takamura, Mishima Shizuoka, JP;
RISO Technologies Corporation, Tokyo, JP;
Abstract
According to one embodiment, a driving device for liquid ejection heads includes a control unit configured to apply a multi-droplet waveform to a liquid ejecting element. The multi-droplet waveform is one of a plurality of preset patterns in which each droplet waveform in the multi-droplet waveform is one of a reference ejection waveform or a minute adjustment waveform. The reference ejection waveform causes a droplet of a nominal reference volume to be ejected by the liquid ejecting element. The minute adjustment waveform causes a droplet of less than the nominal reference volume to be ejected by the liquid ejecting element in variable volume increments.