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. 24, 2012
Filed:
Aug. 27, 2009
Yoshihumi Suzuki, Ena, JP;
Yoshihumi Suzuki, Ena, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Abstract
A recording apparatus includes a calculator, a predictor, and a head controller. Assuming that first ejection signals are supplied to a recording head, the calculator calculates variations in total amount of liquid to be ejected, for respective constant periods of time. The predictor predicts, based on one or more calculated variations, whether a pressure difference between the atmosphere and liquid falls below a threshold value, the atmosphere and the liquid sandwiching a meniscus formed in one of the ejection openings. When the predictor predicts that the pressure difference falls below the threshold value, the head controller controls signal supply to the recording head so that second ejection signals are supplied to the recording head, the second ejection signals having a lower frequency than first ejection signals.