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:
Feb. 08, 1994
Filed:
Oct. 27, 1987
Stephen J Liker, Danbury, CT (US);
Exxon Research and Engineering Company, Florham Park, NJ (US);
Abstract
A method for controlling the boldness of printing via control of the number of ink droplets ejected from a drop on demand ink jet apparatus for producing each ink dot upon a recording medium, the apparatus including at least one transducer operable for producing a pressure disturbance within an associated ink chamber for ejecting an ink droplet from an associated orifice the method comprising the steps of operating the transducer in an iterative manner for selectively producing a predetermined plurality of successively equal or higher or lower amplitude pressure disturbances within the ink chamber, or some combination thereof, for causing a predetermined plurality of successively equal or higher or lower velocity ink droplets, or some combination thereof, to be ejected from the orifice of the ink jet apparatus, within a time period permitting the ink droplets to either merge in flight or upon striking a recording medium, thereby controlling the size of the 'ink spot' so printed upon the recording medium.