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. 29, 2006
Filed:
Nov. 12, 2003
Takehisa Higa, Gamo-gun, JP;
Akio Yuguchi, Gamo-gun, JP;
Masayuki Onitsuka, Sendai, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
The ink delivery holeof the support membermade of ceramics that supports the recording headconsists of the elongated holeprovided with the inclined bottom surfacethat opens on the ink jet recording head side and deepens toward the center and the small-diameter holethat communicates therewith, while surface roughness of at least the inclined bottom surfaceof the ink delivery holeis set in a range from 0.4 to 1.0 μm in terms of arithmetic mean roughness (Ra) and the void ratio is set in a range from 5 to 30%. This constitution prevents bubbles, if ever entered, from staying in the ink delivery hole of the support member that supports the ink jet recording head, and enables it to stably discharge ink droplets of a predetermined quantity.