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:
Sep. 22, 2009
Filed:
Jul. 06, 2007
Ken Tsuchii, Sagamihara, JP;
Mineo Kaneko, Tokyo, JP;
Toru Yamane, Yokohama, JP;
Masaki Oikawa, Inagi, JP;
Keiji Tomizawa, Yokohama, JP;
Mitsuhiro Matsumoto, Yokohama, JP;
Shuichi Ide, Tokyo, JP;
Kansui Takino, Kawasaki, JP;
Ken Tsuchii, Sagamihara, JP;
Mineo Kaneko, Tokyo, JP;
Toru Yamane, Yokohama, JP;
Masaki Oikawa, Inagi, JP;
Keiji Tomizawa, Yokohama, JP;
Mitsuhiro Matsumoto, Yokohama, JP;
Shuichi Ide, Tokyo, JP;
Kansui Takino, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink jet head movable in a main scan direction includes first and second groups of ejection outlet arrays disposed on either side of a common liquid chamber and including plural ejection outlet arrays. In the first group, amounts of liquid ejected from outlets of first and second ejection outlet arrays, which are staggered, differ from each other. In the second group, a common ejection amount ejection outlet array ejects the same amount of liquid as that of one of the first and second ejection outlet arrays and a non-common ejection amount ejection outlet array ejects an amount of the liquid that differs from that of the first ejection outlet array group. The ejection outlets of the common and non-common ejection amount ejection outlet arrays are disposed in a staggered arrangement. The ejection outlets of the second ejection outlet array group are disposed with deviation of ½ of an interval at which the ejection outlets of the first ejection outlet array group are arranged. Different sets of the same cyan and magenta colors in the non-common ejection amount ejection outlet arrays are disposed with deviation of ½ of an interval at which the ejection outlets of the non-common ejection amount ejection outlet arrays of other sets are arranged.