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. 14, 2009
Filed:
Sep. 19, 2005
Todd Alan Mcclelland, Corvallis, OR (US);
Gregory Frank Carlson, Corvallis, OR (US);
Ronald Gregory Paul, Vancouver, WA (US);
Steven Michael Goss, Corvallis, OR (US);
Randall Lee Stockberger, Independence, OR (US);
Todd Alan McClelland, Corvallis, OR (US);
Gregory Frank Carlson, Corvallis, OR (US);
Ronald Gregory Paul, Vancouver, WA (US);
Steven Michael Goss, Corvallis, OR (US);
Randall Lee Stockberger, Independence, OR (US);
Abstract
The velocity of a printhead scanning across a sheet of paper or other print medium is varied on the basis of whether masking patterns for selectively activating nozzle of the printhead include activations in consecutive pixel locations of the masking pattern. The pixel locations are 'firing opportunities' as defined by the maximum firing frequency assigned to the nozzles when the printhead is scanned at a particular velocity. The printhead is moved at that velocity when a masking pattern includes activation in consecutive pixel locations. On the other hand, a higher scanning velocity is available when a constraint is enforced to prevent occasions of firings in consecutive pixel locations. In one embodiment, the constraint is not enforced, but masking patterns are analyzed on a pattern-by-pattern basis to detect those patterns which satisfy the constraint, so that the scanning velocity can be increased during the suitable masking patterns.