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:
Sep. 13, 2016
Filed:
Mar. 04, 2015
Satomi Araki, Kanagawa, JP;
Satomi Araki, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A liquid discharge apparatus comprises: a liquid discharge head that discharge a liquid by varying a volume of a pressure chamber with an actuator; a control unit that generates a drive signal that varies the volume of the pressure chamber; and an actuator driving unit that drives the actuator with the drive signal, wherein the drive signal includes a plurality of discharge pulses and a non-discharge pulse, the non-discharge pulse is applied at a time point at which a vibration velocity of a composite residual vibration that is of a liquid near a nozzle and that is generated by the discharge pulses peaks in a direction toward an inside or outside of the nozzle, the time point being synchronized with an intermediate time point between a fall time point and a rise time point of the non-discharge pulse.