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:
Nov. 05, 1991
Filed:
Feb. 26, 1991
Applicant:
Inventors:
James E Clark, Naperville, IL (US);
Robert I Keur, Niles, IL (US);
Assignee:
Videojet Systems International, Inc., Chicago, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D / ; B23P / ;
U.S. Cl.
CPC ...
346 75 ; 3461 / ; 298901 ;
Abstract
An ink jet nozzle having more than one fluid resonance in the frequency range of interest is achieved through multi-chamber construction techniques. If the dual resonances are sufficiently close together in frequency, a robust printing region is obtained relatively immune to variations in temperature, drive voltage and ink composition.