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:
Nov. 24, 2009
Filed:
Nov. 17, 2006
Masatomo Kojima, Ichinomiya, JP;
Masatomo Kojima, Ichinomiya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-Shi, JP;
Abstract
An ink-jet recording apparatus detects a temperature of an ink-jet head, and reads, from a table of set drive voltages, a drive voltage corresponding to that head temperature. The read drive voltage is determined to be a drive voltage Vto be used in a recording for this time. Further, when the scanning number 'n' of the ink-jet head has reached a value 'm', a drive voltage Vto be used for next time is temporarily determined, based on the head temperature. When |V−V| is greater than a value ΔV, a voltage obtained by making a correcting, by an amount of ΔV, to the drive voltage Vis determined to be the drive voltage Vto be used next time. Therefore, even when the ink temperature is changed during the recording, it is possible to improve the recording quality.