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:
Apr. 22, 1980
Filed:
Dec. 04, 1978
Marcus M Schnarr, Lewisville, TX (US);
Xerox Corporation, Stamford, CT (US);
Abstract
In a coincidence vector gate ink jet, a droplet is expressed from an outlet orifice by a coincident pressure produced by a pair of transducers at an outlet orifice. In this type of ink jet, it is normal for one of a cooperating pair of transducers to be activated in a non-coincident mode. In the non-coincident mode, a droplet is not expressed from an outlet orifice as long as the pressure produced by the one transducer remains below a given threshold. A certain type of pressure absorbing chamber is provided for a specific coincident gate ink jet array, which permits this threshold pressure to be substantially increased to a level substantially above the minimum coincident pressure produced by the pair of transducers to express a droplet from the orifice. This increase in the threshold pressure is an increase in the operating window. A greater operating window permits greater latitudes in manufacturing variation and permits greater latitudes in pressure variation to change the size of a droplet to effect halftoning.