Hewlett-packard Development Company, L.p.

Hewlett-packard Company

James L McCullough

Miquel Boleda

David R Parry

Brian Homan Tsang

Ronald Albert Askeland

John M Wade

Stefano Schiaffino

Clayton L Holstun

Kenneth J Courian

Michel Georges Encrenaz

Paul David Gast

Eamonn O'Brien-Strain

Xavier Gros

Jose Julio Doval

Joe R Pietrzyk

Jorge Castano

Albert Serra

Ferran Vilanova

Scott A Norum

Jennifer Marie McCord Brister

Fred Zuill

Marvin D Patton

Dustin E Dunn

Combined gift and greeting card

Combined gift and credit card

A system for creating an album is disclosed. In one embodiment, the system includes an image input configured to receive related images, an image memory coupled to image input, an image processor coupled to image memory, and an album output coupled to image processor. The image processor is configured to use game play with users to assign metadata labels to the related images and assign album layout rules based upon the story schema and metadata labels.

Creating an album

PPS variation along a scan axis is found by shining a light beam from pen carriage to print-medium position and back to detector, and applying a pathlength/intensity correlation. Sensing is done while scanning, to find relative PPS profile along the track. With no medium in place this measures mechanical imperfections&#x2014;and can be corrected by later deducting thickness of a medium. If medium is present, adjustment is omitted. For absolute values a plural-lamp sensor is calibrated for each lamp, at the PPS design point. Pagewide/webwide variants are included.

Printhead-to-platen spacing variation along scan axis due to carriage guide, measured by simple sensor on carriage

Absolute perceptual values are stored in the design lab, for maximum-density-tone cutoffs&#x2014;preferably a maximum yellow-blue chrominance b* for yellow and minimum luminosity L* for other colorants. Automatic field operations in each printer then force the printer to subsequently print nominal full-saturation colorants so as to match the stored values. In addition to the stored cut-offs, black-and-white reference values measured in the printer are also used in linearizing printer response, for specific combinations of printing medium and printmode.

Closed-loop color correction using factory-measured color cutoffs anchored to field-measured white point

A misalignment compensation technique for a dot printer is disclosed. This technique first supplies printing instructions to a printhead for energizing printing elements in various groups (primitives) to print a pattern on a medium. The printed pattern is then detected by optical sensors in the printer. Based on the detection, a position offset error for each primitive is determined. These errors are used to generate a separate time correction for each of the primitives such that, when the printer is used normally, the time period for printing a dot will be advanced or delayed for each primitive so as to align the dots printed by the primitives. In another embodiment, alignment data taken by a manufacturing line sensor is stored in a memory on the print cartridge. After the print cartridge is installed in the printer, a second optical test completes the data needed to create timing correction values.

Alignment of ink dots in an inkjet printer

Disclosed is an inkjet printhead having a substrate that includes plurality of ink ejection elements formed thereon. The printhead also includes a heat exchanger in thermal contact with the substrate. The heat exchanger has a plurality of pathways for allowing a passage of ink through the heat exchanger.

Heat exchanger for an inkjet printhead

Growing community of inventors

San Diego, CA, United States of America

James L McCullough