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:
Jun. 15, 2021
Filed:
Jun. 25, 2019
Seiko Epson Corporation, Tokyo, JP;
Keigo Sugai, Chino, JP;
Abstract
A liquid-ejecting-apparatus includes a nozzle that ejects liquid; a pressure-chamber-communicating with the nozzle; a pressure-change-portion that changes a pressure of the liquid in the pressure-chamber; and a controller that controls the pressure-change-portion. The controller executes first control of decreasing the pressure of the liquid in the pressure-chamber, hence pulling a center portion of a meniscus of the liquid in the nozzle toward the pressure-chamber, and forming a liquid-membrane with the liquid at an inner-wall-surface of the nozzle; and second control of, in a state in which the liquid-membrane is formed at the inner-wall-surface of the nozzle, increasing the pressure of the liquid in the pressure-chamber, hence inverting a shape of the center portion of the meniscus to a protruding shape protruding toward an opening of the nozzle and forming a liquid-column, and further, ejecting the liquid-column so as not to contact the liquid-membrane.