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. 03, 2002
Filed:
Jul. 13, 2001
Masahiko Fujii, Ebina, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
An inkjet recording head can compensate the drop volume change of ink droplets due to the cutting position deviation caused when nozzles are formed by cutting and can eject ink droplets having a constant drop volume stably regardless of the flow passage length. In manufacturing the head, less manufacturing processes are required and generation of off-specification products is suppressed, and the product is manufactured at low cost. The inkjet recording head is provided with individual flow passages having a pressure generation part with a pressure generation plane positioned in parallel to the flow of ink supplied in the nozzle direction having a nozzle at each end, which nozzle ejects ink droplets in the direction perpendicular to the normal line of the pressure generation plane. The flow passage has a region having the maximum cross-sectional area, a reducing region where the cross-sectional area reduces from the maximum cross-sectional area to the minimum cross-sectional area, and an expansion region where the cross-sectional area increases from the minimum cross-sectional area successively from the above-mentioned pressure generation part toward the nozzle direction in the cross-sectional area perpendicular to the above-mentioned ink flow direction.