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. 17, 2002
Filed:
Jul. 10, 1998
Applicant:
Inventors:
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/04 ; B21D 5/376 ; G01D 1/500 ;
U.S. Cl.
CPC ...
B41J 2/04 ; B21D 5/376 ; G01D 1/500 ;
Abstract
An ink jet head and a method of producing the same are disclosed. Use is made of a sufficiently thick single crystal at the time of anodic bonding, so that a vibration plate is free from deformation without resorting to any special short-circuit electrode.