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:
Oct. 24, 1995
Filed:
Nov. 05, 1992
Applicant:
Inventors:
Dilip K Shrivastava, Wheeling, IL (US);
Pietro C Lostumbo, Wooddale, IL (US);
Assignee:
Videojet Systems International, Inc., Wooddale, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
346 54 ; 346 85 ;
Abstract
Ink jet printers used for printing large characters employ a separate solenoid valve for each drop stream which forms part of a printhead matrix. By optimizing the frequency response of the nozzle/valve sub system (primarily the connecting tubing), higher operating frequencies can be obtained. It has been found that a ratio of six to one between subsystem resonant frequency and operating frequency provides greatly improved printing.