Search

Richard N Ellson

from Palo Alto, CA
Age ~60
Get Report
Also known as:
Richard Nathan Ellson, Richard P Ellson, Dick N Ellson, Rick N Ellson, Richard Nellson
Phone and address:
513 El Capitan Pl, Palo Alto, CA 94306
(650) 387-7071
Related to:
Steven L Ellson, 54Michele R Marcucci, 51Scott R Bennett, 59Robert A Ellson, 89Mchelle EllsonPenelope B Ellson, 64Susan E Bennett, 62Gail A Bennett, 57Sharlyn B EllsonJanet L Ellison, 43Peter R Bennett, 92Dora EllsonJanet L Ellson, 62Rachel D Bennett, 91
Connected to:
Debra F Ellson, 60Emily E Ellson, 35Catherine B Ellspermann, 51Jennifer A Ellspermann, 46Rose M Ellsperman, 67Susan J Ellspermann, 64Carol G Ellstein, 72David E Ellstrand, 62Cheri J Ellstrom, 64Christine L Ellstrom, 55

Richard Ellson Phones & Addresses

  • 513 El Capitan Pl, Palo Alto, CA 94306 (650) 387-7071
  • Milwaukie, OR
  • Menlo Park, CA
  • Rochester, NY
  • Urbana, IL
  • Santa Clara, CA
  • 513 El Capitan Pl, Palo Alto, CA 94306

Industries

Biotechnology

Resumes

Resumes

Richard Ellson Photo 1

Richard Ellson

View page
Location:
San Francisco Bay Area
Industry:
Biotechnology

Business Records

Name / Title
Company / Classification
Phones & Addresses
Richard Ellson
President
MOFFETT PARK BUSINESS GROUP
Transportation Services
PO Box 60995, Sunnyvale, CA 94088
Richard Ellson
CTO
Labcyte
Biotechnology · Laboratory Equipment Reseller · Mfg Lab Apparatus/Furniture · Laboratory Apparatus and Furniture Manufacturing
1190 Borregas Ave, Sunnyvale, CA 94089
(408) 747-2000

Publications

Isbn (Books And Publications)

Three-Dimensional Image Capture and Applications: 27-28 January, 1998, San Jose, California

View page
Author

Richard N. Ellson

ISBN #

0819427535

Us Patents

Method And Apparatus For Masking Thermally-Induced Ink Volume Variation Artifacts Using High Frequency Interlacing

View page
US Patent:
6336696, Jan 8, 2002
Filed:
Nov 9, 1999
Appl. No.:
09/436615
Inventors:
Richard N. Ellson - Palo Alto CA
Scott Elrod - La Honda CA
Assignee:
Xerox Corporation - Stamford CT
International Classification:
B41J 29377
US Classification:
347 18, 347 17
Abstract:
A method and device are provided in an acoustic ink printhead for masking temperature-induced artifacts by shifting the artifacts to a high spatial frequency beyond the visual acuity of humans. A cooling device is provided in the printhead for reducing the temperature of ink in a high speed acoustic ink printhead that ejects ink drops from an array of ink drop ejectors as the printhead moves along a longitudinal path. The cooling device includes first and second heat sinks formed on the printhead to develop first and second temperature gradients in the ink held within the printhead. The first and second temperature gradients are oppositely oriented along the face of the printhead so that the first and second sets of ink drops ejected onto a paper sheet adjacent the printhead produce rows of printed spots having a substantially uniform average spot size in a direction transverse the longitudinal path of the moving printhead. To that end, the cooling device masks the visual effects of thermally-induced ink volume by high frequency interlacing the ink volume variations with the printed pixel information. The printhead is cooled by at least one pair of counter flowing thermally conductive fluids, preferably at least a one of diethylene glycol, triethylene glycol, tetraethylene glycol, and glycerol.

Method And Apparatus For Stitching Print Swaths In An Image-Rendering Device

View page
US Patent:
6357847, Mar 19, 2002
Filed:
Dec 18, 2000
Appl. No.:
09/739854
Inventors:
Richard N. Ellson - Palo Alto CA
David A. Mantell - Rochester NY
Stephen David White - Santa Clara CA
Assignee:
Xerox Corporation - Stamford CT
International Classification:
B41J 2938
US Classification:
347 12
Abstract:
This invention relates to a method and apparatus for stitching print swaths in an image-rendering device such as an acoustic ink printer. More particularly, the invention is directed to a method implemented in an apparatus to reduce the visual artifact caused by inaccurate paper advance between neighboring swaths of an ink emitter printhead. The method includes the provision of a âpuzzle cutâ or âzipperâ edge between swaths. In this regard, the image is divided into swaths and the edges thereof are dithered to vary the depth of the cut in accordance with the expected paper advance accuracy and other printing characteristics such as noise and variations in the width of print swaths for different printheads.

Acoustic Ejection Of Fluids Using Large F-Number Focusing Elements

View page
US Patent:
6416164, Jul 9, 2002
Filed:
Jul 20, 2001
Appl. No.:
09/910690
Inventors:
Richard G. Stearns - Felton CA
Richard N. Ellson - Palo Alto CA
Assignee:
Picoliter Inc. - Mountain View CA
International Classification:
B41J 204
US Classification:
347 46
Abstract:
The present invention provides a method and device for the acoustic ejection of fluid droplets from fluid-containing reservoirs using focusing means having an F-number greater than approximately 2. The droplets are ejected toward designated sites on a substrate surface for deposition thereon. In one embodiment, the device is comprised of: a plurality of reservoirs each adapted to contain a fluid; an ejector comprising a means for generating acoustic radiation and a large F-numbered means for focusing the acoustic radiation at a focal point near the fluid surface in each of the reservoirs; and a means for positioning the ejector in acoustically coupled relationship to each of the reservoirs. The invention is useful in a number of contexts, particularly in the preparation of biomolecular arrays.

Apparatus For Achieving High Quality Aqueous Ink-Jet Printing On Plain Paper At High Print Speeds

View page
US Patent:
6428159, Aug 6, 2002
Filed:
Jul 19, 1999
Appl. No.:
09/357015
Inventors:
Joy Roy - San Jose CA
Babur Hadimioglu - Mountain View CA
Richard N. Ellson - Palo Alto CA
Robert Sprague - Saratoga CA
James B. Kruger - Half Moon Bay CA
John Lennon - Newark CA
Assignee:
Xerox Corporation - Stamford CT
International Classification:
B41J 201
US Classification:
347102, 347100, 347 43, 101491
Abstract:
An apparatus for ink-jet printing on a recording medium is provided which includes the steps of jetting aqueous ink drops on paper in the form of an image. The aqueous ink used is a slow-drying (high-surface tension) ink which does not penetrate the paper/paper fibers for a relatively long time. Prior to penetration of the paper/paper fibers, the water in the droplet is quickly evaporated from the ink while still resident on the paper surface. The evaporation process is substantially completed prior to an additional liquid ink being jetted onto the same or adjoining location of the recording medium. The evaporation is rapid enough to prevent the resident ink from substantially migrating/wicking to any adjacent location or into the recording medium. Further the drying energy is transferred to the resident ink spots from the same direction as the printheads ensuring less energy requirement.

Method For Achieving High Quality Aqueous Ink-Jet Printing On Plain Paper At High Print Speeds

View page
US Patent:
6428160, Aug 6, 2002
Filed:
Nov 29, 2000
Appl. No.:
09/726100
Inventors:
Joy Roy - San Jose CA
Babur Hadimioglu - Mountain View CA
Richard N. Ellson - Palo Alto CA
Robert Sprague - Saratoga CA
James B. Kruger - Half Moon Bay CA
John Lennon - Newark CA
Assignee:
Xerox Corporation - Stamford CT
International Classification:
B41J 201
US Classification:
347102, 347100, 347 43, 101491
Abstract:
An apparatus and method for ink-jet printing on a recording medium is provided which includes the steps of jetting aqueous ink drops on paper in the form of an image. The aqueous ink used is a slow-drying (high-surface tension) ink which does not penetrate the paper/paper fibers for a relatively long time. Prior to penetration of the paper/paper fibers, the water in the droplet is quickly evaporated from the ink while still resident on the paper surface. The evaporation process is substantially completed prior to an additional liquid ink being jetted onto the same or adjoining location of the recording medium. The evaporation is rapid enough to prevent the resident ink from substantially migrating/wicking to any adjacent location or into the recording medium. Further the drying energy is transferred to the resident ink spots from the same direction as the printheads ensuring less energy requirement.

Row Scrambling In Ejector Arrays

View page
US Patent:
6447097, Sep 10, 2002
Filed:
Apr 5, 2001
Appl. No.:
09/827815
Inventors:
Jeffrey J. Folkins - Rochester NY
Richard N. Ellson - Palo Alto CA
Steven A. Buhler - Sunnyvale CA
David A. Mantell - Rochester NY
Assignee:
Xerox Corporation - Stamford CT
International Classification:
B41J 2145
US Classification:
347 40, 347 12
Abstract:
An image forming system is provided having a printhead including a plurality of ejectors arranged in one or more sequenced groups. Each of the ejectors has a sequence number assigned thereto, ranging from a minimum value and incremented to a maximum value within each sequence group. The plurality of ejectors have an arrangement such that a difference between the sequence number assignment of any two adjacent ejectors is less than a difference between the maximum and minimum sequence number assignment values.

Method And Apparatus For High Resolution Acoustic Ink Printing

View page
US Patent:
6467877, Oct 22, 2002
Filed:
Oct 5, 1999
Appl. No.:
09/412275
Inventors:
Richard N. Ellson - Palo Alto CA
Assignee:
Xerox Corporation - Stamford CT
International Classification:
B41J 2135
US Classification:
347 46
Abstract:
A printhead for an acoustic ink printer includes at least one acoustic generator for producing acoustic sound waves. The printhead also includes at least one lens. Each lens corresponds to one of the acoustic generators. A fluid is positioned over the at least one lens. A cover is positioned over the fluid. The cover includes at least one aperture. Each of the apertures corresponds to one of the lenses. An edge portion of each aperture contacts the fluid, thereby forming a corresponding meniscus in the fluid. Each lens focuses the acoustic sound waves produced by the respective acoustic generator to an ejection point on the corresponding meniscus. A droplet of the fluid is ejected from each of the ejection points. Directions of each of the acoustic sound waves are at respective oblique angles with respect to the corresponding meniscus. A direction at which each droplet is ejected from each ejection point is a function of a duration of the acoustic sound wave generated by the acoustic generator.

Methods And Apparatuses For Operating A Variable Impedance Acoustic Ink Printhead

View page
US Patent:
6494565, Dec 17, 2002
Filed:
Nov 5, 1999
Appl. No.:
09/434981
Inventors:
Richard N. Ellson - Palo Alto CA
Robert P. Kowalski - Campbell CA
Babur Hadimioglu - Mountainview CA
Thanh Duc Truong - Walnut CA
Assignee:
Xerox Corporation - Stamford CT
International Classification:
B41J 2135
US Classification:
347 46
Abstract:
An active controller is provided to control operation of an acoustic printhead in which impedance of the printhead changes with both the active printing row and the distribution of active ejectors in the row. The active controller varies the input power to the printhead in response to active ejectors. Power requirements are insured while also reducing power consumption and maintaining print quality. The determination of RF power is based on the active row, how many ink ejectors are to be switched on, and their position within a row. Look-up tables used to determine proper attenuation or power values are provided in a cascaded fashion.
Control profile
Richard N Ellson from Palo Alto, CA, age ~60 Get Report