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:
Dec. 16, 1997
Filed:
Oct. 07, 1992
Richard K Alderson, Phoenix, AZ (US);
HSLC Technology Associates Inc, Scottsdale, AZ (US);
Abstract
A head for an ink jet printer has a substrate with a longitudinal dimension extending across the width of the paper to be printed upon. A cavity is formed longitudinally in the substrate and a conduit is provided to supply ink to the cavity. A series of orifices are spaced along a longitudinal surface of the substrate and extend between the surface and the cavity. A plurality of electrodes are provided to generate an arc within each orifice to expel ink there from. A pair of electrodes are associated with each orifice and the electrodes connect to electrical buses that supply bias voltage to the electrodes. The bus connection multiplexes the electrodes enabling relatively few switches to selectively control the expulsion of ink from each orifice. A diaphragm lies against the substrate forming a wall of the cavity and of the orifices. The diaphragm is formed of a resilient material that dampens pressure waves produced within an orifice and the cavity when an arc occurs between electrodes for that orifice.