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:
Jul. 14, 1992
Filed:
Nov. 09, 1990
Applicant:
Inventors:
Juan E Lopez, Newbury Park, CA (US);
Edgar D Sheh, Thousand Oaks, CA (US);
Assignee:
Dataproducts Corporation, Woodland Hills, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
346-11 ; 3461 / ; 346 / ;
Abstract
A drive system for driving the transducers of an ink jet print head. A controller determines transducer activation periods during which one or more selected transducers are to be activated. During each transducer activation period a voltage source is activated. A drive circuit receives serial print data from the controller and couples the selected transducers to the voltage source. The voltage source can be provided with a waveshape circuit to produce a desired excitation waveshape.