Charles S Mcdavid

US Patent:

8070251, Dec 6, 2011

Filed:

Jun 3, 2009

Appl. No.:

12/477372

Inventors:

Sarah Marie Burroughs - Lexington KY, US
Charles Scott McDavid - Frankfort KY, US

Assignee:

Lexmark International, Inc. - Lexington KY

International Classification:

B41J 29/377
B41J 2/175

US Classification:

347 18, 347 85

Abstract:

An inkjet printer maintenance system includes a manifold having an air removal passageway communicating with an ink reservoir, a valve in the manifold actuatable for opening and closing the air removal passageway for periodically drawing out air from the flow of ink in the ink reservoir and a valve actuator in the form of an electrically conductive wire sensitive to change in temperature. In response to application of electric current, and termination of application of electric current, the wire correspondingly contracts and extends in length causing the opening and permitting the closing of the air removal passageway by the valve.

US Patent:

20160209790, Jul 21, 2016

Filed:

Mar 25, 2016

Appl. No.:

15/081097

Inventors:

- Lexington KY, US
Charles Scott McDavid - Frankfort KY, US
Fangsheng Wu - Lexington KY, US

International Classification:

G03G 15/20

Abstract:

A fuser assembly, including a fuser roller receiving heat from a heating element and including a metal core, a heat insulation elastic layer disposed around the metal core, and a top release layer disposed over the heat insulation elastic layer. A backup belt assembly, coupled to the fuser roller, includes at least two nip forming rollers contacting an inner surface of an endless belt to form an elongated fusing nip along the fuser roller. A first nip forming roller engages the fuser roller via the endless belt at an entrance of the elongated fusing nip and a second nip forming roller engages the fuser roller via the endless belt at an exit of the elongated fusing nip, wherein a product of a Young's Modulus of the top release layer and a thickness thereof is between about 2,000 and about 20,000 N/m.

US Patent:

20160179044, Jun 23, 2016

Filed:

Feb 18, 2016

Appl. No.:

15/047299

Inventors:

- Lexington KY, US
Jeffery James Buchanan - Lexington KY, US
Michael Clark Campbell - Lexington KY, US
Benjamin Karnik Johnson - Lexington KY, US
Charles Scott McDavid - Frankfort KY, US

International Classification:

G03G 15/20

Abstract:

A fuser assembly which includes a heating member; a backup roll disposed proximate to the heating member; a heat transfer device selectively contacting the backup roll for transferring heat therefrom; and a positioning mechanism moving the heat transfer device between a first position in which the heat transfer device is engaged with the backup roll and a second position in which the heat transfer device is spaced apart therefrom. The positioning mechanism pivots the heat transfer device about a pivot axis when moving the heat transfer device, and includes a pair of bell cranks to which the heat transfer device is coupled, a first coupling member coupled to one of the bell cranks and a second coupling member coupled to the first coupling member. Translation of the second coupling member causes the first coupling member to pivot which rotates the pair of bell cranks.

US Patent:

20150185672, Jul 2, 2015

Filed:

Dec 26, 2013

Appl. No.:

14/140662

Inventors:

- Lexington KY, US
Jeffery James Buchanan - Lexington KY, US
Michael Clark Campbell - Lexington KY, US
Benjamin Karnik Johnson - Lexington KY, US
Charles Scott McDavid - Frankfort KY, US
Fangsheng Wu - Lexington KY, US

Assignee:

Lexmark International, Inc. - Lexington KY

International Classification:

G03G 15/20

Abstract:

A backup belt assembly includes an endless belt, at least a pair of nip forming rollers contacting an inner surface of the endless belt and positioned relative to the fuser roller to provide pressure to a section of an outer surface of the fuser roller adjacent the endless belt so as to form an elongated fusing nip along the section. A first roller of the pair of nip forming rollers engages the fuser roller via the endless belt at an entrance of the elongated fusing nip, while a second roller of the pair of nip forming rollers engages the fuser roller via the endless belt at an exit of the elongated fusing nip. The first roller provides a lower amount of pressure to the fuser roller relative to the pressure provided by the second roller. A supporting roller may be disposed within the endless belt near the entrance of the elongated fusing nip for providing acceptable media entry geometry.

US Patent:

20150063836, Mar 5, 2015

Filed:

Aug 29, 2013

Appl. No.:

14/013218

Inventors:

- Lexington KY, US
Benjamin Karnik Johnson - Lexington KY, US
Charles Scott McDavid - Frankfort KY, US
Jennifer Lyn Gordon - Lexington KY, US

Assignee:

Lexmark International, Inc. - Lexington KY

International Classification:

G03G 15/20
G03G 13/20

US Classification:

399 21, 399328, 399 43

Abstract:

Disclosed is a method of conditioning a fusing member having a top-release layer. The method includes heating the top-release layer to at least the melting temperature of the top-release layer while rotating the fusing member and while no pressure member engages the top-release layer, and cooling the top-release layer to less than the melting temperature of the top-release layer while rotating the fusing member. Other methods and devices are disclosed.

US Patent:

20150063857, Mar 5, 2015

Filed:

Sep 12, 2013

Appl. No.:

14/024980

Inventors:

- Lexington KY, US
Benjamin Karnik Johnson - Lexington KY, US
Charles Scott McDavid - Frankfort KY, US

Assignee:

LEXMARK INTERNATIONAL, INC. - Lexington KY

International Classification:

G03G 15/20
G03G 21/20

US Classification:

399 94, 399329

Abstract:

A fuser assembly for an electrophotographic imaging device which removes excess heat from overheated portions of the fuser assembly and includes a heating member; a backup roll disposed proximate to the heating member so as to form a fuser nip therewith; and a heat exchange roll in contact with the backup roll such that rotation of the backup roll rotates the heat exchange roll, the heat exchange roll having an air passage for moving cooling air from one end to an opposite end of the heat exchange roll so as to provide cooling to the fuser assembly.

US Patent:

20140369729, Dec 18, 2014

Filed:

Dec 20, 2013

Appl. No.:

14/136987

Inventors:

- Lexington KY, US
Jeffery James Buchanan - Lexington KY, US
Michael Clark Campbell - Lexington KY, US
Benjamin Karnik Johnson - Lexington KY, US
Charles Scott McDavid - Frankfort KY, US

Assignee:

Lexmark International, Inc. - Lexington KY

International Classification:

G03G 15/20

US Classification:

399330

Abstract:

A fuser assembly for an electrophotographic imaging device which transfers heat from overheated portions of the fuser assembly to portions having lesser temperatures. The fuser assembly includes a heating member; a backup roll disposed proximate to the heating member so as to form a fuser nip therewith, wherein rotation of the backup roll causes the heating member to rotate; and a first roll in contact with one of the backup roll and the heating member such that rotation of the one of the backup roll and the heating member rotates the first roll, the first roll including a heat pipe disposed therein.

US Patent:

20140369730, Dec 18, 2014

Filed:

Dec 20, 2013

Appl. No.:

14/137407

Inventors:

- Lexington KY, US
Jeffery James Buchanan - Lexington KY, US
Michael Clark Campbell - Lexington KY, US
Benjamin Karnik Johnson - Lexington KY, US
Charles Scott McDavid - Frankfort KY, US

Assignee:

Lexmark International, Inc. - Lexington KY

International Classification:

G03G 15/20

US Classification:

399330

Abstract:

A fuser assembly for an imaging device which transfers heat from overheated portions of the fuser assembly to portions having lesser temperatures. The fuser assembly includes a heating member; a backup roll disposed proximate to the heating member so as to form a fuser nip therewith; a heat transfer device in contact with the backup roll such that rotation of the backup roll rotates the heat transfer device, the heat transfer device transfers heat from one location to another location on the backup roll; and a positioning mechanism for moving the heat transfer device between a first position in which the heat transfer device is engaged with and contacts the one of the backup roll and the heating member and a second position in which the heat transfer device is disengaged and spaced apart therefrom, the positioning mechanism to pivots the heat transfer device about a pivot axis when moving between the first and second positions.

Address:

205 Chapman Dr, Frankfort, KY 40601

VIN:

JHLRE48757C019706

Make:

HONDA

Model:

CR-V

Year:

2007