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:
Jan. 30, 1990
Filed:
Oct. 11, 1988
Applicant:
Inventor:
Shinichi Hirasawa, Kanagawa, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ; B41J / ;
U.S. Cl.
CPC ...
3461 / ;
Abstract
A liquid jet recording head having orifices for discharging liquid droplets therefrom, a liquid chamber for retaining liquid therein, and liquid flow paths connecting the orifices to the liquid chamber. The cross-sectional area of the flow paths gradually decreases from the liquid chamber toward the orifices. Also provided are an energy generating portion in the liquid flow paths and generating energy to be impared to the liquid, and small walls provided upstream of the energy generating portion, whereby the flow of the liquid from the liquid chamber to the energy generating portion is suppressed.