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. 11, 2000
Filed:
Apr. 15, 1997
Masami Kasamoto, Ayase, JP;
Hiroshi Sugitani, Machida, JP;
Yasuroh Kashima, Yokohama, JP;
Kazuaki Masuda, Kawasaki, JP;
Tsuyoshi Orikasa, Kasukabe, JP;
Hiroyuki Ishinaga, Tokyo, JP;
Makiko Kimura, Sagamihara, JP;
Seiichiro Karita, Yokohama, JP;
Jun Kawai, Yokohama, JP;
Teruo Arashima, Kawasaki, JP;
Yuji Kamiyama, Fujisawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink jet head includes a plurality of ejection orifices for ejecting ink; a common liquid chamber for storing temporarily the ink to be supplied to each of the ejection orifices; a plurality of ink passages, being separated by liquid passage walls, and each of which connects one of the ejection orifices to the common liquid chamber; and a plurality of energy generating elements provided one for one in each of the ink passages for generating energy to eject the ink from each of the ejection orifices; wherein the ejection orifices are grouped into a plurality of control blocks comprising a predetermined number of the ejection orifices in sequence so that the energy generating elements are driven by the block; and wherein walls are provided in the common liquid chamber, at the dividing lines between the control blocks, for impeding the ink movement in the liquid chamber, between the adjacent blocks.