Jeffrey Todd Barr
Landscape Architect in San Diego, CA
License number
Utah 6552636-5301
Issued Date
May 31, 2007
Expiration Date
May 31, 2014
Category
Landscape Architect
Type
Landscape Architect
Address
Address
San Diego, CA
Education
OHIO STATE UNIVERSITY
Professional information
Method To Correct For Color Error Caused By Malfunctioning Ink Ejection Elements
US Patent:
6722751, Apr 20, 2004
Filed:
Jan 30, 2002
Appl. No.:
10/061931
Inventors:
Jeffrey H. Barr - San Diego CA
Jennifer Korngiebel - San Diego CA
Tod S. Heiles - Vancouver WA
Steven L Webb - Murrieta CA
Jeffrey D Rutland - San Diego CA
Jennifer Korngiebel - San Diego CA
Tod S. Heiles - Vancouver WA
Steven L Webb - Murrieta CA
Jeffrey D Rutland - San Diego CA
Assignee:
Hewlett-Packard Development Company, L.P. - Houston TX
International Classification:
B41J 29393
US Classification:
347 19, 347 43
Abstract:
A method of correcting for malfunctioning ink ejection elements in a printing system using a single pass over a recording medium which includes obtaining a standard printmask, identifying ink ejection elements which are malfunctioning, ascertaining an original color measurement value for each pixel which will be printed with the malfunctioning ink ejection elements, determining a replacement color measurement value closest in value to the original color measurement value which does not use the malfunctioning ink ejection elements for each pixel which will be printed with the malfunctioning ink ejection elements and modifying the standard printmask by adjusting the number and color of ink drops deposited based on the replacement color measurement value for each pixel which will be printed with the malfunctioning ink ejection elements to create a modified printmask.
Lightfast Ink-Jet Dye Set Having Color Gamut Of Silver Halide Prints
US Patent:
6682589, Jan 27, 2004
Filed:
Oct 30, 2001
Appl. No.:
10/002066
Inventors:
Peter C. Morris - San Diego CA
Stephen W. Bauer - San Diego CA
Shirley Lee - Poway CA
Keshava A. Prasad - San Marcos CA
Jeffrey H. Barr - San Diego CA
Stephen W. Bauer - San Diego CA
Shirley Lee - Poway CA
Keshava A. Prasad - San Marcos CA
Jeffrey H. Barr - San Diego CA
Assignee:
Hewlett-Packard Development Company, L.P. - Houston TX
International Classification:
C09D 1100
US Classification:
106 3148
Abstract:
A specific dye set for formulating yellow, cyan, magenta, and black inks comprises Direct Yellow 132, at least one other yellow dye, Direct Blue 199, a magenta dye comprising a dye having the structure and, optionally, Pacified Reactive Black 31, respectively. The dye set provides excellent ink-jet prints having excellent lightfastness when exposed to office light, excellent imaging onto glossy inkjet media, and large color gamut which substantially encompasses the color space for a silver halide reference print. The aqueous inks each comprise from about 0. 1 to about 5 wt % of at least one dye with the black ink comprising from about 0. 5 to about 5 wt % of at least one colorant; from about 5 to about 20 wt % of at least one organic solvent; 0 to about 1. 5 wt % of at least one component independently selected from the group consisting of surfactants, buffers, biocides, and metal chelators; and the balance water.
Disruption Of Polymer Surface Of A Nozzle Member To Inhibit Adhesive Flow
US Patent:
5519421, May 21, 1996
Filed:
Jul 18, 1994
Appl. No.:
8/276733
Inventors:
Jeffrey H. Barr - San Diego CA
Hanno Ix - Escondido CA
Michael P. Caren - San Diego CA
Hanno Ix - Escondido CA
Michael P. Caren - San Diego CA
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
G01D 1518
US Classification:
347 47
Abstract:
In an inkjet print cartridge having a polymer nozzle member with windows formed therein for facilitating bonding of conductors to electrodes on a substrate, an adhesive is dispensed through the windows to encapsulate the exposed conductors bonded to the electrodes. The adhesive typically overflows outside the windows. To prevent the adhesive from flowing uncontrolled towards the nozzles formed in the nozzle member, a disruption or surface discontinuity is formed in the nozzle member surface between the windows and the nozzles. This disruption or surface discontinuity may be formed by either scratching, etching, cutting, pressing a blade into, or laser ablating the tape surface, or forming a raised wall on the tape surface, such that the flow of adhesive is inhibited because of mechanical and surface forces.
Method To Correct For Malfunctioning Ink Ejection Elements In A Single Pass Print Mode
US Patent:
6863361, Mar 8, 2005
Filed:
Oct 30, 2001
Appl. No.:
10/001590
Inventors:
Jeffrey H. Barr - San Diego CA, US
Jennifer Korngiebel - San Diego CA, US
Tod S. Heiles - Vancouver WA, US
Steven L. Webb - Murrieta CA, US
Jeffrey D Rutland - San Diego CA, US
Jennifer Korngiebel - San Diego CA, US
Tod S. Heiles - Vancouver WA, US
Steven L. Webb - Murrieta CA, US
Jeffrey D Rutland - San Diego CA, US
Assignee:
Hewlett-Packard Development Company, L.P. - Houston TX
International Classification:
B41J029/393
US Classification:
347 19, 347 40, 347 41
Abstract:
Described is a method which corrects for malfunctioning or inoperable ink ejection elements in a one-pass printmode. The method comprises obtaining the standard printmask; identifying the ink ejection elements which are malfunctioning; ascertaining ink ejection elements adjacent to the ejection elements which are malfunctioning; selecting particular adjacent ink ejection elements from the adjacent ink ejection elements; and modifying the standard printmask by adjusting the amount of ink deposited by the selected adjacent ink ejection elements to create a modified printmask.
Jeffrey Barr
Location:
Greater San Diego Area
Industry:
Computer Hardware