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:
Feb. 09, 2010
Filed:
Mar. 29, 2007
Naoto Iwao, Nagoya, JP;
Manabu Hibi, Nagoya, JP;
Kenichi Satake, Osaka, JP;
Shin Ishikura, Kirishima, JP;
Naoto Iwao, Nagoya, JP;
Manabu Hibi, Nagoya, JP;
Kenichi Satake, Osaka, JP;
Shin Ishikura, Kirishima, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Kyocera Corporation, Kyoto-shi, Kyoto-fu, JP;
Abstract
An actuator can selectively switch a volume of a pressure chamber between a first state Vand a second state V, which is greater than V. The actuator changes from the first state into the second state and then changes back into the first state to eject ink from an ejection port. A controller controls the actuator such that To/Tc falls within a range fromto. To represents the time period between time the actuator starts to change from the first state into the second state, to a time the actuator starts to change from the second state into the first state. Tc represents the period of proper oscillation of ink filling up the individual ink passage. The actuator is controlled so that a variation in ink ejection speed is prevented from being too large relative to the variation in the degree of deformation of the actuator.