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:
Nov. 11, 2025
Filed:
Jul. 03, 2023
Riso Technologies Corporation, Tokyo, JP;
Ryutaro Kusunoki, Mishima Shizuoka, JP;
Noboru Nitta, Tagata Shizuoka, JP;
RISO Technologies Corporation, Tokyo, JP;
Abstract
According to one embodiment, an ink jet head includes a piezoelectric member to drive a pressure chamber, an electrode pair to apply a voltage to the piezoelectric member, and a common waveform generation circuit to generate a common waveform. The common waveform alternately includes an element of a first output waveform and an element of a second output waveform at a predetermined period. A switch is connected between a first electrode of the electrode pair and the common waveform generation circuit. A timing controller supplies a control signal to turn the switch on and off at the predetermined period such that the first or second output waveform can be selectively applied to the piezoelectric member to drive the pressure chamber to eject a liquid.