Hewlett-packard Company

Charles S Woodruff

John A Underwood

Dan Arquilevich

Braulio Soto

Rick Minoru Tanaka

Brent A Geske

Mark D Lund

Ngoc-Diep T Nguyen

Disclosed is a system in an inkjet printer for determining the amount of a fixer to be applied to a medium. The system comprises a fixer generation circuit where the fixer generation circuit determines an amount of a fixer to be applied to a dot location on a medium based on an amount of ink to be applied to the dot location. A bloom encoder circuit is also disclosed for identifying amounts of fixer to be deposited adjacent to dot locations containing ink.

Fixer usage generation technique for inkjet printers

A method and means for automatic alignment of ink-jet printheads includes fitting measuring constructs to actual print data acquired form a print made using a given, predetermined, test pattern data set. Specific test patterns for use in automated alignment of ink-jet printheads are suited to providing a variety of printhead alignment information in a compact format. The test pattern data set incorporates techniques for avoiding carriage-induced dynamic errors during automated alignment of ink-jet printheads.

Test pattern implementation for ink-jet printhead alignment

A method and apparatus for automatic alignment of ink-jet printheads includes fitting measuring constructs to actual print data acquired form a print made using a given, predetermined, test pattern data set. Specific test patterns for use in automated alignment of ink-jet printheads are suited to providing a variety of printhead alignment information in a compact format. The test pattern data set incorporates techniques for avoiding carriage-induced dynamic errors during automated alignment of ink-jet printheads.

Automated ink-jet printhead alignment system

Growing community of inventors

Brush Prairie, WA, United States of America

Charles S Woodruff