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:
Dec. 12, 1995
Filed:
Mar. 21, 1994
Applicant:
Inventor:
Yumiko Ohashi, Hashima, JP;
Assignee:
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
347 69 ; 347 45 ;
Abstract
An organic material is used as the protective film in the ink ejecting printer head with the surface roughness Ra of the protective film is set to be no greater than 3 .mu.m. Accordingly, the segregation of ink components is suppressed to ensure a smooth flow of ink. As a result, the variations in the volume of the ink droplets ejected is reduced and the ejecting stability is improved. Therefore, the ink ejecting printer head having such a protective film that is excellent in protection also improves the stability of the ejected ink droplets and can be manufactured at a low cost.