Charles D Simpson

US Patent:

6342324, Jan 29, 2002

Filed:

Feb 16, 2000

Appl. No.:

09/504461

Inventors:

Minyu Li - Oakdale MN
M. Zaki Ali - Mendota Heights MN
Eric D. Morrison - St. Paul MN
Charles W. Simpson - Lakeland MN
Leonard J. Stulc - Shafer MN
Ramnath Subramaniam - St. Paul MN
Jiayi Zhu - Woodbury MN

Assignee:

Imation Corp. - Oakdale MN

International Classification:

G03G 5147

US Classification:

430 67, 430 66, 430132

Abstract:

Release compositions include (a) from zero to about 30 parts by weight of a polymer selected from the group consisting of wherein R , R , R , R , R , R , R , and R are each independently selected from an alkyl group, an alkenyl group, an aryl group, and an aralkyl group, such that at least one of R and R is an alkenyl group, l, m, and n are each independently an integer so long as the polymer contains greater than 3 mol % vinyl-containing siloxane groups; a (vinyl siloxy)(siloxy)-modified silica having a vinyl content of at least about 0. 4 vinyl equivalent/kg; and a combination thereof; (b) more than about 20 parts by weight of a polymer having the formula wherein R , R , R , R , R , R , R , and R are each independently selected from an alkyl group, an alkenyl group, an aryl group, and an aralkyl group, such that at least two of R , R , R , R , R , R , R , and R are alkenyl groups, p, q, and r are each independently integers so long as the polymer has less than 3 mol % vinyl-containing siloxane groups; and (c) up to about 20 parts by weight of a cross-linking agent of the formula wherein R , R , R , R , R , and R are each independently selected from hydrogen, an alkyl group, an aryl group, and an aralkyl group, X is O, or a divalent organic linking group, and s and t are independently integers so long as there are at least two functional groups capable of cross-linking per molecule.

US Patent:

6720025, Apr 13, 2004

Filed:

Jul 1, 2002

Appl. No.:

10/186809

Inventors:

Robert A. Yapel - Oakdale MN
Wayne P. Ray - Weatherford OK
David J. Scanlan - Ventura CA
Larry A. Lien - Woodbury MN
Charles W. Simpson - Lakeland MN

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

B08D 126

US Classification:

427 9, 427356, 427358

Abstract:

A method of slot extrusion coating is provided that can be used to apply thin coatings using liquid compositions having high percent solids. A window of operability advantageously identifies the limits of a process to provide these thin high solids coatings. The window of operability is determined by obtaining a first graphical curve representing actual values of wet thickness as a function of percent solids level. The critical wet thickness is then identified on the first graphical curve. The window of operability is identified as an area defined by the boundaries: percent solids greater than the point at which critical wet thickness occurs, an actual wet thickness greater than all points above the first graphical curve and equal to or less than the critical thickness.

US Patent:

7229736, Jun 12, 2007

Filed:

Oct 31, 2004

Appl. No.:

10/978635

Inventors:

Ronald J. Moudry - Woodbury MN, US
Charles W. Simpson - Lakeland MN, US
James A. Baker - Hudson WI, US

Assignee:

Samsung Electronics Company - Suwon

International Classification:

G03G 9/00

US Classification:

430115, 430114, 43013722

Abstract:

The invention provides liquid electrographic toner compositions comprising a liquid carrier having toner particles dispersed in the liquid carrier. The liquid carrier has a Kauri-Butanol number less than about 30 mL. The toner particles comprise polymeric binder comprising at least one amphipathic copolymer comprising one or more S material portions and one or more D material portions. The toner composition additionally comprises a wax component associated with the toner particle, wherein the wax component and the amphipathic copolymer each comprise at least one of a Lewis acid and a Lewis base pair in an amount sufficient to form weak, reversible intermolecular non-covalent bonds resulting from acid/base interactions between the wax component and the amphipathic copolymer. These toner particles can exhibit excellent final image durability characteristics, and can also provide toner compositions that provide excellent images at low fusion temperatures on a final image receptor.

US Patent:

7306886, Dec 11, 2007

Filed:

Oct 31, 2004

Appl. No.:

10/978836

Inventors:

Gay L. Herman - Cottage Grove MN, US
Ronald J. Moudry - Woodbury MN, US
Zbigniew Tokarski - Woodbury MN, US
Charles W. Simpson - Lakeland MN, US
Leonard Stulc - Shaffer MN, US
A. Kristine Fordahl - St. Paul MN, US
James A. Baker - Hudson WI, US

Assignee:

Samsung Electronics Company - Suwon

International Classification:

G03G 9/00

US Classification:

4301083, 4301088, 4301084, 4301091, 43013715

Abstract:

Dry electrographic toner compositions are provided comprising a plurality of dry toner particles, wherein the toner particles comprise polymeric binder comprising at least one amphipathic copolymer comprising one or more S material portions and one or more D material portions. The dry electrographic toner composition comprises a wax associated with the dry toner particles, wherein a substantial portion of the wax is entrained in the toner particle and a substantial portion of the wax is associated with the toner particle at the surface thereof. Methods of making electrographic toner compositions are also provided comprising preparing polymeric binder particles comprising at least one amphipathic copolymer comprising one or more S material portions and one or more D material portions, and milling the particles before or after formulation as toner particles with wax in the liquid carrier prior to drying to form the dry toner composition. These toner compositions provide images having excellent durability and erasure resistance properties at low fusion temperatures and with little undesired offset.

US Patent:

7354687, Apr 8, 2008

Filed:

Oct 31, 2004

Appl. No.:

10/978688

Inventors:

Leonard Stulc - Shaffer MN, US
Ronald J. Moudry - Woodbury MN, US
Zbigniew Tokarski - Woodbury MN, US
Charles W. Simpson - Lakeland MN, US
Gay L. Herman - Cottage Grove MN, US
A. Kristine Fordahl - St. Paul MN, US
James A. Baker - Hudson WI, US

Assignee:

Samsung Electronics Company - Suwon

International Classification:

G03G 9/00

US Classification:

4301083, 4301088, 4301084, 4301091, 43013715

Abstract:

Dry electrographic toner compositions are provided comprising a plurality of dry toner particles, wherein the toner particles comprise polymeric binder comprising at least one amphipathic copolymer comprising one or more S material portions and one or more D material portions. The dry electrographic toner composition comprises a wax associated with the dry toner particles, wherein substantially all of the wax is associated with the toner particle at the surface thereof. Methods of making electrographic toner compositions are also provided comprising preparing polymeric binder particles comprising at least one amphipathic copolymer comprising one or more S material portions and one or more D material portions, preparing toner particles, drying the toner particles, and milling the dry toner particles in the presence of a wax component to provide a dry toner particle composition having the wax associated with the toner particles. These toner compositions provide images having excellent durability and erasure resistance properties at low fusion temperatures and with little undesired offset.

US Patent:

7433635, Oct 7, 2008

Filed:

Jun 30, 2004

Appl. No.:

10/884687

Inventors:

Hsin Hsin Chou - Woodbury MN, US
Brian P. Teschendorf - Vadnais Heights MN, US
Manuel Lozada - New Brighton MN, US
Charles W. Simpson - Lakeland MN, US
Truman F. Kellie - Lakeland MN, US
A. Kristine Fordahl - St. Paul MN, US
James A. Baker - Hudson WI, US

Assignee:

Samsung Electronics Co., Ltd. - Suwon

International Classification:

G03G 15/16
G03G 15/01

US Classification:

399296, 399226, 399233, 399302

Abstract:

A method of producing an image on a final image receptor from image data in a multiple pass electrophotographic system is provided. The method includes the steps of applying transfer assist material to an intermediate transfer member and providing at least one development unit including a photoreceptive element and charged toner particles. During each complete processing cycle of an intermediate transfer member, a toned image is created and transferred to the intermediate transfer member by application of a bias. In multiple processing cycles of the intermediate transfer member, the transfer assist material and the at least one toned image thereby form a composite image layer on the intermediate transfer member. The method further includes contacting the composite image layer with a final image receptor while applying a bias that is sufficiently strong to transfer at least a portion of the composite image layer to the final image receptor.

US Patent:

7433636, Oct 7, 2008

Filed:

Jun 30, 2004

Appl. No.:

10/884688

Inventors:

Brian P. Teschendorf - Vadnais Heights MN, US
Hsin Hsin Chou - Woodbury MN, US
Charles W. Simpson - Lakeland MN, US
Manuel Lozada - New Brighton MN, US
Truman F. Kellie - Lakeland MN, US
James A. Baker - Hudson WI, US

Assignee:

Samsung Electronics Co., Ltd. - Suwon

International Classification:

G03G 15/16
G03G 15/01

US Classification:

399296, 399233, 399302

Abstract:

A method of producing an image on a final image receptor in a single pass electrophotographic system is provided. The method includes the steps of providing at least one toner development unit including a photoreceptive element and charged toner particles, and creating a toned image on the photoreceptive element that is transferred to an intermediate transfer member. The method further includes providing a transfer assist material development unit for applying a transfer assist material to at least a portion of the toned image to form a complete image layer on the intermediate transfer member, wherein the complete image layer is formed in a single pass of the intermediate transfer member. The method also includes contacting the complete image layer with a final image receptor while applying a bias that is sufficiently strong to transfer at least a portion of the complete image layer to the final image receptor.

US Patent:

8480592, Jul 9, 2013

Filed:

Dec 23, 2009

Appl. No.:

12/645567

Inventors:

Rafal Chudzik - Peoria AZ, US
Jason G. Seiger - Gilbert AZ, US
Jennifer Smith - Mesa AZ, US
Charles Simpson - Westlake Village CA, US

Assignee:

C. R. Bard, Inc. - Murray Hill NJ

International Classification:

A61B 8/00
A61B 8/14
A61B 17/34
A61B 10/00

US Classification:

600461, 600437, 600458, 600459, 600462, 600464, 600562, 600564, 600567

Abstract:

A biopsy probe mechanism includes an elongate sample receiving member having a longitudinal axis and having a sample receiving notch. An elongate sample receiving member and a cutting cannula are movable relative to one another along a longitudinal axis between a first relative position and a second relative position. A first echogenic feature is established on the elongate sample receiving member and a second echogenic feature is established on the cutting cannula. The first echogenic feature is in longitudinal alignment with the second echogenic feature when the elongate sample receiving member and the cutting cannula are in the first relative position. The first echogenic feature is out of longitudinal alignment with the second echogenic feature when the elongate sample receiving member and the cutting cannula are in the second relative position.