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:
Aug. 12, 2008
Filed:
Dec. 14, 2006
Koichiro Hara, Nagoya, JP;
Koichiro Hara, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, JP;
Abstract
In an ink-jet head including black, yellow, magenta, cyan nozzle rows, the nozzle rows are arranged so that in each of the nozzle rows, adjacent nozzles are arranged by a predetermined spacing distance P, and that the black nozzle row is shifted in a nozzle-row alignment direction by a spacing distance smaller than the predetermined spacing distance P, with respect to the cyan, magenta and yellow nozzle rows. When a black dot is formed between monochrome-black dots adjacent in the sub-scanning direction, a dot of color-mixed black which is a mixture of the other three colors is formed between the monochrome-black dots. At this time, by adjusting a black-ink jetting amount to be greater than a total amount of the other three color inks, it is possible to make the monochrome-black dot and the color-mixed black dot to be mutually uniform in size.