Daniel J Gagnon

US Patent:

7226048, Jun 5, 2007

Filed:

Sep 29, 2004

Appl. No.:

10/955250

Inventors:

William M Connors - Lexington KY, US
Daniel R. Gagnon - Harrodsburg KY, US
James M Jackson - Lexington KY, US

Assignee:

Lexmark International, Inc. - Lexington KY

International Classification:

B65H 3/52

US Classification:

271121, 271124

Abstract:

An imaging apparatus includes a sheet picking mechanism drive unit that includes a sheet pick gear train for driving a sheet picking mechanism to transport a sheet from a stack of print media along the sheet feed path. A print media dam is pivotably coupled at an axis to the imaging apparatus. The print media dam has at least one dam member and a first gear. Each dam member has a media engaging surface. A drive mechanism is drivably coupled between the sheet picking drive mechanism and the first gear to move the dam member between an extended position and a retracted position. When the dam member is in the extended position, the media engaging surface is positioned to interrupt the sheet feed path. When the dam member is in the retracted position, the media engaging surface is positioned to not interrupt the sheet feed path.

US Patent:

7227756, Jun 5, 2007

Filed:

May 27, 2004

Appl. No.:

10/855291

Inventors:

Daniel Robert Gagnon - Harrodsburg KY, US
Tommy Otis Lowe - Lexington KY, US
David Kyle Murray - Lexington KY, US

Assignee:

Lexmark International, Inc. - Lexington KY

International Classification:

H05K 5/00

US Classification:

361732, 361786, 361752

Abstract:

A power supply keying method for use with an electrical apparatus includes defining a plurality of power supply classes; associating with the plurality of power supply classes a plurality of power supplies, each of the plurality of power supplies including a power supply housing having a unique keying arrangement corresponding to one power supply class of the plurality of power supply classes; and providing in the electrical apparatus a power supply receptacle for receiving at least one power supply of the plurality of power supplies, the unique keying arrangement of the power supply housing in conjunction with the power supply receptacle permitting reception of a particular power supply of the plurality of power supplies into the power supply receptacle only if the power supply class associated with the particular power supply has power supply electrical characteristics that satisfy electrical power requirements of the electrical apparatus.

US Patent:

7784782, Aug 31, 2010

Filed:

Oct 2, 2007

Appl. No.:

11/865922

Inventors:

Brian Dale Cook - Nicholasville KY, US
David Wayne DeVore - Richmond KY, US
Daniel Robert Gagnon - Harrodsburg KY, US
Kris Eren Kallenberger - Richmond KY, US
David Kyle Murray - Lexington KY, US

Assignee:

Lexmark International, Inc. - Lexington KY

International Classification:

B65H 1/00

US Classification:

271171, 271145, 399393

Abstract:

A modular print engine assembly for a peripheral comprises an upper paper support, a tray base, the upper paper support pivotally connected to one of the tray base or an extender disposed between the upper paper support and the tray base. The extender allows the modular print engine to be utilized across multiple print models or platforms with housings of various shape and size.

US Patent:

7909524, Mar 22, 2011

Filed:

Jun 30, 2005

Appl. No.:

11/171626

Inventors:

William M. Connors - Lexington KY, US
Walter K. Cousins - Lexington KY, US
Daniel R. Gagnon - Harrodsburg KY, US
Kris E. Kallenberger - Lexington KY, US
Kevin J. Maudsley - Lexington KY, US

Assignee:

Lexmark International, Inc. - Lexington KY

International Classification:

B41J 13/26

US Classification:

400630, 400633, 4006321, 400642, 271226, 271248, 271249

Abstract:

A media edge guide assembly for use in an imaging apparatus having a media supply source includes a first edge guide portion and a second edge guide portion. The first edge guide portion and the second edge guide portion are arranged to have an axis of rotation passing through the first edge guide portion and the second edge guide portion. The first edge guide portion and the second edge guide portion are laterally interconnected to facilitate movement as a unit in a lateral direction along the axis of rotation, and the first edge guide portion and the second edge guide portion are configured to be rotationally disconnected with respect to the axis of rotation to permit the first edge guide portion to rotate around the axis of rotation independent of the second edge guide portion.

US Patent:

7959148, Jun 14, 2011

Filed:

Aug 20, 2009

Appl. No.:

12/544820

Inventors:

Michael Lee Alsip - Lexington KY, US
Daniel Robert Gagnon - Harrodsburg KY, US
Kris Eren Kallenberger - Richmond KY, US

Assignee:

Lexmark International, Inc. - Lexington KY

International Classification:

B65H 3/52

US Classification:

271121, 271167

Abstract:

A tuned media buckler comprises a body made of a plastic material, a rib extending from the upper surface of the body with an overall flat configuration and uniform rigidity with the rib running along the upper surface and centrally lengthwise along the body, a spring force material backing the lower surface of the body opposite to the rib that compresses against the lower surface of the body in response to the generally normal force applied to the top edge surface of the rib by a media stack, and a housing having a central aperture running lengthwise of the housing such that the rib of the media buckler extends through the aperture for engagement by a media stack.

US Patent:

8246041, Aug 21, 2012

Filed:

Jun 19, 2009

Appl. No.:

12/488345

Inventors:

Daniel Robert Gagnon - Harrodsburg KY, US
Robert Warren Rumford - Lexington KY, US
John Thomas Writt - Lexington KY, US

Assignee:

Lexmark International, Inc. - Lexington KY

International Classification:

B65H 43/00

US Classification:

271117, 271110, 271153

Abstract:

A system and method for monitoring media stack height utilizes a pick mechanism and stack height sensing mechanism. The pick mechanism has a pick arm and a pick roller, the arm rotatably mounted at one end to pivot about an axis and change its angular position relative thereto. The roller rotatably mounted to an opposite end of the arm contacts a media stack top and is rotatably driven to feed sheets one at a time from the stack top changing the stack height. The angular position of the arm relative to the stack changes as the stack height changes. The stack height sensing mechanism arranged on and adjacent to the arm senses arm angular displacement as the stack height changes to provide an indication of the sheet quantity remaining in the stack. A method for calibrating stack height sensing of the monitoring system provides one or more calibration points such as at “full stack” and “stack out” conditions.

US Patent:

8246042, Aug 21, 2012

Filed:

Aug 31, 2010

Appl. No.:

12/872344

Inventors:

Daniel Robert Gagnon - Harrodsburg KY, US
Robert Warren Rumford - Lexington KY, US
John Thomas Writt - Lexington KY, US

Assignee:

Lexmark International, Inc. - Lexington KY

International Classification:

B65H 3/06

US Classification:

271117

Abstract:

A method of calibrating stack height sensing in a media stack height monitoring system in an image forming machine includes sensing the angular position of a pick mechanism arm, generating electrical signals having levels correlated to the pick mechanism arm angular positions that correspond to different stack height levels, measuring and storing at least one value corresponding to the level of the electrical signal at least at one of two calibration points: “full load” and “stack out” conditions of the media stack, estimating either the amount or percent of media sheets remaining in the media stack corresponding to measured and stored value of the electrical signal level at the at least one calibration point, and indicating either of the amount or percent of media sheets remaining in the media stack.

US Patent:

20080111191, May 15, 2008

Filed:

Oct 2, 2007

Appl. No.:

11/865921

Inventors:

Takashi MIYAZAWA - Hokuto-shi, JP
Brian Cook Cook - Nicholasvile KY, US
David Wayen Devore - Richmond KY, US
Daniel Robert Gagnon - Harrodsburg KY, US
Kris Eren Kallenberger - Richmond KY, US
David Kyle Murray - Lexington KY, US

Assignee:

SEIKO EPSON CORPORATION - Tokyo

International Classification:

H01L 23/62

US Classification:

257355

Abstract:

An electronic circuit that drives a driven element to which driving voltage or driving current is supplied. The electronic circuit includes a signal line, a unit circuit connected to the signal line, and a voltage supply line. The unit circuit includes a driving transistor, a switching element, and a capacitive element. The driving transistor includes a gate terminal, a first terminal, a second terminal connected to the voltage supply line, and a channel formed between the first terminal and the second terminal. The switching element controls electrical connection between the gate terminal of the driving transistor and one of the first terminal and the second terminal. The capacitive element includes a first electrode connected to the gate terminal of the driving transistor and a second electrode connected to the signal line. A conductive state between the first terminal and the second terminal is controlled by a gate voltage applied to the gate terminal. During a first period, which is at least part of a period during which the switching element is in an off state, a voltage level of the gate voltage changes from a first voltage level to a second voltage level by a first signal being supplied to the signal line. During a second period, which is at least part of a period during which a second signal is supplied to the signal line, the switching element is set to an on state.