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David W Pinkernell

from Washougal, WA
Age ~61

David Pinkernell Phones & Addresses

  • 31510 8Th St, Washougal, WA 98671 (360) 835-7466
  • Vancouver, WA
  • Pullman, WA
  • 31510 SE 8Th Way, Washougal, WA 98671 (360) 835-7466

Emails

d***l@cs.com

Industries

Computer Hardware

Resumes

Resumes

David Pinkernell Photo 1

Senior R&Amp;D Engineer At Hp

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Location:
Portland, Oregon Area
Industry:
Computer Hardware
Experience:
HP Public Company; HPQ; Computer Hardware industry: Senior R&D Engineer,  (March 2009-Present) Hewlett-Packard Public Company; HPQ; Information Technology and Services industry: R&D Section Manager,  (November 1981-March 2009) 

Publications

Us Patents

Printhead-Carriage Alignment And Electrical Interconnect Lock-In Mechanism

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US Patent:
RE37671, Apr 30, 2002
Filed:
Dec 21, 1998
Appl. No.:
09/217468
Inventors:
David W. Pinkernell - Vancouver WA
Larry A. Jackson - Vancouver WA
J. Paul Harmon - Vancouver WA
Steve O. Rasmussen - Vancouver WA
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
B41J 214
US Classification:
347 50, 347 87, 347 20, 347 49, 400175, 400352, 346139 R
Abstract:
A printhead cartridge and carriage assembly ( ) is provided comprising: a carriage ( ); a snap-spring ( ) for securing a printing cartridge ( ) in postion on the carriage; and an interconnect strip ( ) for supplying electrical signals to the cartridge, including a force loading spring pad ( ) for urging a portion of the interconnect strip against a portion of the cartridge. The cartridge has top ( ), bottom ( ), sides ( ), front ( ) and rear ( ) surfaces and includes a printhead ( ) on the bottom surface, an electrical contact strip ( ) on the back surface connected to the printhead, referencing pads ( ) on the side surface, and a lip ( ) on the back surface for accepting the snap-spring. Referencing surface ( ) are provided for receiving the referencing pads on the cartridge. The spring pad urges the interconnect strip against the electrical contact of the cartridge. The printhead cartridge/carriage assembly of the invention requires only one hand of the operator to both insert and lock the cartridge in position.

Printing Mechanism

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US Patent:
6733110, May 11, 2004
Filed:
Mar 10, 2003
Appl. No.:
10/384960
Inventors:
David W. Pinkernell - Washougal WA
Steve O. Rasmussen - Vancouver WA
Vance M. Stephens - Brush Prairie WA
Assignee:
Hewlett-Packard Development Company, L.P. - Houston TX
International Classification:
B41J 215
US Classification:
347 40, 347155
Abstract:
A printing mechanism comprises a print engine that prints an image on a first side of a photographic print media, a laminator that laminates the first side of said photographic print media having said image printed thereon, and a duplexer that returns said photographic print media to said print engine for printing on a second side of said photographic print media.

Single Sheet Ink-Jet Printer With Passive Drying System

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US Patent:
4728963, Mar 1, 1988
Filed:
Mar 11, 1987
Appl. No.:
7/024278
Inventors:
Steve O. Rasmussen - Vancouver WA
Larry A. Jackson - Vancouver WA
John D. Rhodes - Vancouver WA
David W. Pinkernell - Vancouver WA
J. Paul Harmon - Vancouver WA
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
G01D 900
G01D 1524
B65H 3100
B41F 0000
US Classification:
346 25
Abstract:
A novel ink-jet printer (10) is provided. The printer provides both paper supply tray (12) and paper collection tray (18) in the front (14) of the printer for ease of paper handling and reduced footprint. The paper collection tray is provided with a pair of opposed output rails (22) which support a sheet of paper (16c) during printing to permit ink on a sheet of paper (16b) previously printed to dry. A paper handling mechanism is provided which eliminates a sheet pickup motor and associated elements. The paper handling mechanism is configured to pick off a sheet of paper from a stack of input paper, bring it around paper drive rollers (24) onto a platen (26), where the printing operation, employing a printhead cartridge (32) occurs. The resulting printer is easy to manufacture, has reduced complexity by eliminating components in the paper drive mechanism and is lower in cost.

Ink-Jet Printer With Printhead Carriage Alignment Mechanism

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US Patent:
4872026, Oct 3, 1989
Filed:
Jan 28, 1988
Appl. No.:
7/149454
Inventors:
Steve O. Rasmussen - Vancouver WA
Larry A. Jackson - Vancouver WA
John D. Rhodes - Vancouver WA
David W. Pinkernell - Pullman WA
J. Paul Harmon - Vancouver WA
Kevin L. Moon - Vancouver WA
William R. Huseby - Vancouver WA
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
G01D 1516
B41J 304
US Classification:
346140R
Abstract:
A novel ink-jet printer (10) is provided. The print provides both paper supply tray (12) and paper collection tray (18) in the front (14) of the printer for ease of paper handling and reduced footprint. The paper collection tray is provided with a pair of opposed output rails (22) which support a sheet of paper (16c) during printing to permit ink on a sheet of paper (16b) previously printed to dry. A paper handling mechanism is provided which eliminates a sheet pickup motor and associated elements. The paper handling mechanism is configured to pick off a sheet of paper from a stack of input paper, bring it around paper drive rollers (24) onto a platen (26), where the printing operation, employing a printhead cartridge (32), occurs. The printer further includes a service station (230) for clearing clogged nozzles in the printhead (33) and removing bubbles therefrom, for covering the nozzles with a protective cap (266), and for wiping contaminants off the nozzles. Reference pads (200) are provided for aligning and securing the printing cartridge in a carriage (35).

Ink-Set Printhead-To-Paper Referencing System

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US Patent:
4843338, Jun 27, 1989
Filed:
Oct 23, 1987
Appl. No.:
7/113035
Inventors:
Steve O. Rasmussen - Vancouver WA
Larry A. Jackson - Vancouver WA
David W. Pinkernell - Vancouver WA
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
G01D 1518
G01D 1534
B41J 1120
US Classification:
346140R
Abstract:
Several problems of alignment associated with ink-jet printers are alleviated by four aspects. In the first, a reverse bow (B) in the paper (12) is created for printing on single sheets of paper. The reverse bow, which in the transverse axis of the paper, forces the paper flat against the platen (14) by using the paper's own stiffness. In the second aspect, the paper and the carriage (30) are referenced to the same part (the carriage guide (10)). In this configuration, the paper is urged against the underside of the carriage guide off of drive rollers (18), through the reverse bow, and onto the platen, where it is printed. The carriage is referenced to the carriage guide through a slider bump by means of a carriage shaft and gravity. The carraige guide comprises stiff thin sheet metal, which is closely-toleranced and has well-controlled dimensions. Thus, this part is good to reference to, rather than molded-in parts, which are not stiff enough at the required thickness.
David W Pinkernell from Washougal, WA, age ~61 Get Report