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. 22, 2003
Filed:
Jun. 04, 2001
Jorge Castano, Barcelona, ES;
Xavier Girones, Tarragona, ES;
Hewlett-Packard Development Company, L.P., Fort Collins, CO (US);
Abstract
An ink jet printing process for removing or substantially hiding vertical bands which may be produced during a printing operation includes the application of a controlled variance to shift the horizontal position of certain ink drops fired from certain nozzles. That is, instead of firing ink drops from each of the nozzles simultaneously, the controlled variance causes the ink drops to be fired at various times after the firing signal has been received. The controlled variance may involve a mathematical formula applied to set the level of horizontal shift for each of the ink drops. Examples of suitable mathematical formulae include sinusoidal functions, Bessel functions, and Tschebysheff polynomials.