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:
Mar. 13, 2012
Filed:
Feb. 18, 2009
Yoshihumi Suzuki, Ena, JP;
Yoshihumi Suzuki, Ena, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Abstract
A recording apparatus includes a recording head having a common liquid channel; plural pressure chambers; plural nozzles; plural individual liquid channels, each individual liquid channel extending from the common liquid channel via associated pressure chamber to associated nozzle; and plural actuators configured to impart a pressure to a liquid inside a respective one of the pressure chambers; and a control unit configured to drive the actuators; wherein the control unit comprises: an excessive state detection section configured to detect an excessive state in which a pressure difference between a liquid-side pressure and an air-side pressure at a meniscus formed at any one of the nozzles exceeds a threshold value when droplets are ejected from the nozzles, and a meniscus vibration section configured to drive the actuator associated with the nozzle that does not eject droplets such that the meniscus is subjected to vibration without ejecting the droplets.