Daniel James Magnusson

US Patent:

6682167, Jan 27, 2004

Filed:

Jun 27, 2002

Appl. No.:

10/183846

Inventors:

Robert D. Davis - Brush Prairie WA
Mike Burton - Vancouver WA
Bruce A. Axten - Vancouver WA
Jafar N. Jefferson - Vancouver WA
Daniel J. Magnusson - Vancouver WA

Assignee:

Hewlett-Packard Development - Houston TX

International Classification:

B41J 2165

US Classification:

347 32

Abstract:

A method for reducing a servicing noise is provided. In a measuring action, a servicing position is measured using a full pushing force of an actuator applied to a service station. In a disengaging action, the actuator is disengaged from the service station. In a reducing action, the pushing force is reduced to a minimum value. In an engaging action, the service station is engaged with the actuator. In a monitoring action, a position of the actuator is monitored during the engagement. In a comparing action, the actuator position is compared to the stored servicing position. In an increasing action, the pushing force is increased for future engagements if the servicing position has not been reached. A printing mechanism configured to employ such a method is also provided.

US Patent:

6749192, Jun 15, 2004

Filed:

Jun 5, 2002

Appl. No.:

10/164181

Inventors:

Allan G. Olson - Camas WA
R. Scott Smith - Vancouver WA
Daniel J. Magnusson - Vancouver WA
Kieran B Kelly - Vancouver WA

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

B65H 904

US Classification:

271 21, 271246

Abstract:

A media feed mechanism includes a picking device, a first feedroller and a second feedroller. The picking device picks a sheet of media from a media source. The first feedroller moves the sheet of media along a feed media path. During a skew correction phase, the first feedroller rolls in a forward direction feeding the sheet of media forward and the second feedroller turns in a reverse direction preventing the sheet of media from progressing past a nip of the second feedroller. This results in skew correction. After skew correction is performed, the second feedroller turns in the forward direction advancing the sheet of media for printing.

US Patent:

7778589, Aug 17, 2010

Filed:

Nov 30, 2004

Appl. No.:

11/000132

Inventors:

Bruce A Axten - Camas WA, US
Daniel J. Magnusson - Vancouver WA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

G03G 15/00

US Classification:

399389, 400624, 400708

Abstract:

A method and apparatus for adjusting the print area by positioning a sheet in an imaging device utilizing length data from a prior sheet. A first sheet length is measured and thereafter utilized to determine the print zone for a subsequent sheet.

US Patent:

20030076375, Apr 24, 2003

Filed:

Oct 19, 2001

Appl. No.:

10/046429

Inventors:

Douglas Harriman - Portland OR, US
Kris English - Portland OR, US
Daniel Magnusson - Vancouver WA, US

International Classification:

B41J029/393

US Classification:

347/019000

Abstract:

Resting position error recognition for an ink-jet, translational-type, service station mechanism. Service station drive mechanism binding due to hard stop impact is compensated for by calculating a difference between when the drive mechanism stops and when a predetermined velocity change was first recorded. In a more sophisticated embodiment, noise filtering is employed to improve accuracy with increasing number of uses of the service station mechanism.

US Patent:

20130025391, Jan 31, 2013

Filed:

Jul 27, 2011

Appl. No.:

13/192042

Inventors:

Daniel James Magnusson - Vancouver WA, US

International Classification:

F16H 55/18

US Classification:

74409

Abstract:

Example embodiments disclosed herein relate to gear backlash compensation in a printing device. This gear backlash compensation occurs in a gear train assembly utilized to drive and position a service station of the printing device. The gear train assembly is driven by a media advance and positioning subsystem of the printing device.

US Patent:

20210331461, Oct 28, 2021

Filed:

Jul 13, 2018

Appl. No.:

16/499944

Inventors:

- Spring TX, US
Robert Yraceburu - Vancouver WA, US
Daniel James Magnusson - Vancouver WA, US

International Classification:

B41F 23/04
B41F 23/08
B41J 11/00

Abstract:

In some examples, a media conditioner includes a conveying component to convey a sheet of printable media, a first heating element to heat a first portion of the conveying component, a second heating element to heat a second portion of the conveying component, and a controller. The controller is to provide a variable first power level to the first heating element and a variable second power level to the second heating element to cause the first and second heating elements to generate heat. In addition, the controller is to determine a first parameter based on the first power level and to determine a second parameter based on the second power level. The controller is also to produce a result indicator based on a result of a comparison between the first parameter and the second parameter.

US Patent:

20210252848, Aug 19, 2021

Filed:

Aug 31, 2018

Appl. No.:

17/049527

Inventors:

- Spring TX, US
Robert Yraceburu - Vancouver WA, US
Daniel James Magnusson - Vancouver WA, US

International Classification:

B41F 23/04

Abstract:

Power allocation in printing devices is disclosed. Independent load requests are received from printing device heater systems. Power grants are allocated based on a general power arbitration of a power source in response to the independent load requests. A power grant is adjusted based on a contextual printing condition to provide an adjusted grant from the power source to a printing device heater system of the printing device heater systems.

US Patent:

20210245494, Aug 12, 2021

Filed:

Aug 31, 2019

Appl. No.:

15/733789

Inventors:

- Spring TX, US
Francisco Alcazar - Vancouver WA, US
Daniel James Magnusson - Vancouver WA, US
Duane A Koehler - Vancouver WA, US

International Classification:

B41F 33/16
B41F 23/04

Abstract:

According to examples, an apparatus may include a processor that may identify a first period for a heated system, the first period including a first set of power events and a first zero power event for the heated system and may identify a second period for the heated system, the second period including a second set of power events and a second zero power event for the heated system. The processor may also borrow, from the second period, a portion of a second power event of the second set of power events and may apply the borrowed portion of the second power event to a first power event of the first set of power events during the first period to remove the first zero power event from the first period.