Michael M Yang

US Patent:

6605410, Aug 12, 2003

Filed:

May 23, 2002

Appl. No.:

10/153946

Inventors:

Michael Wen-Chein Yang - Marietta GA
Rustom Sam Kanga - Marietta GA
Alvin Varnard Randall - East Point GA

Assignee:

Polyfibron Technologies, Inc. - Atlanta GA

International Classification:

G03C 173

US Classification:

4302731, 4302711, 430306, 430945

Abstract:

Laser-imageable flexographic printing plates and a method of making same are disclosed. A thin polymeric film doped with a UV absorber is laminated to a photopolymer layer. The film is ablated from the photopolymer using a laser operating at a selected wavelength to create an in situ negative. The resulting negative can be subjected to typical UV flood exposure and development.

US Patent:

6756181, Jun 29, 2004

Filed:

Aug 3, 2001

Appl. No.:

09/921589

Inventors:

Michael Wen-Chein Yang - Marietta GA
Rustom Sam Kanga - Marietta GA

Assignee:

Polyfibron Technologies, Inc. - Atlanta GA

International Classification:

G03F 711

US Classification:

4302731, 430944, 430945, 430306

Abstract:

Laser-imageable flexographic printing plates and a method of making same are disclosed. A thin polymeric film doped with a UV absorber is laminated to a photopolymer layer. The film is ablated from the photopolymer using a laser operating at a selected wavelength to create an in situ negative. The resulting negative can be subjected to typical UV flood exposure and development.

US Patent:

6916596, Jul 12, 2005

Filed:

Jul 3, 2001

Appl. No.:

09/898152

Inventors:

Michael Wen-Chein Yang - Marietta GA, US
Rustom Sam Kanga - Marietta GA, US
Alvin Varnard Randall - East Point GA, US

International Classification:

G03F007/095
G03F007/30
G03F007/38

US Classification:

430306, 430302, 430326, 430944, 4302731

Abstract:

Laser-imageable flexographic printing plates and a method of making same are disclosed. A thin polymeric film doped with a UV absorber is laminated to a photopolymer layer. The film is ablated from the photopolymer using a laser operating at a selected wavelength to create an in situ negative. The resulting negative can be subjected to typical UV flood exposure and development.

US Patent:

20010053499, Dec 20, 2001

Filed:

Jul 3, 2001

Appl. No.:

09/898327

Inventors:

Michael Yang - Marietta GA, US
Rustom Kanga - Marietta GA, US
Alvin Randall - East Point GA, US

Assignee:

Polyfibron Technologies, Inc.

International Classification:

G03F007/00

US Classification:

430/300000, 430/271100, 430/284100

Abstract:

Laser-imageable flexographic printing plates and a method of making same are disclosed. A thin polymeric film doped with a UV absorber is laminated to a photopolymer layer. The film is ablated from the photopolymer using a laser operating at a selected wavelength to create an in situ negative. The resulting negative can be subjected to typical UV flood exposure and development.

US Patent:

20030232126, Dec 18, 2003

Filed:

Dec 6, 2002

Appl. No.:

10/310634

Inventors:

Michael Yang - Marietta GA, US

International Classification:

B05D005/12

US Classification:

427/058000, 427/428000, 427/256000

Abstract:

The present invention is directed to a method for placing spacer uniformly and securely onto the substrate of a liquid crystal display element, comprising the steps of. (a) Preparing an UV [or thermal] curable resin containing spacer particles. (b) Dispersing certain amount of above spacer-resin mixture on a gravure cylinder with well finished designed cells to be used as the space-resin carrier. (c) Removing excess space-resin mixture and forced on spacer particle with resin into each hole by means of doctor knife. (d) Transferring individual spacer-resin onto a second smooth surfaced roller according to the designed pattern by means of contact. (e) Transferring individual patterned spacer-resin onto the surface of substrate of a liquid crystal display element from the second roller with any conventional coating methods. Likewise, the edge sealant for LCD can be placed by a similar method.

US Patent:

20040112858, Jun 17, 2004

Filed:

Oct 22, 2003

Appl. No.:

10/689683

Inventors:

Michael Yang - Marietta GA, US

International Classification:

C30B033/00

US Classification:

216/023000

Abstract:

The present invention is directed to a method for placing spacer uniformly and securely onto the substrate of a liquid crystal display element, comprising the steps of: (a) Preparing an UV [or thermal] curable resin containing spacer particles. (b) Dispersing certain amount of above spacer-resin mixture on a gravure cylinder with well finished designed cells to be used as the spacer-resin carrier. (c) Removing excess spacer-resin mixture and forced on spacer particle with resin into each hole by means of doctor knife. (d) Transferring individual spacer-resin onto a second smooth surfaced roller according to the designed pattern by means of contact. (e) Transferring individual patterned spacer-resin onto the surface of substrate of a liquid crystal display element from the second roller with any conventional coating methods. Likewise, the edge sealant for LCD can be placed by a similar method.

US Patent:

59767650, Nov 2, 1999

Filed:

Sep 4, 1998

Appl. No.:

9/148728

Inventors:

Ronald J. Kumpfmiller - Marietta GA
Martin L. Carter - Greeneville SC
Jung H. Tsao - Marietta GA
William K. Goss - Marietta GA
Michael W. Yang - Marietta GA

Assignee:

Polyfibron Technologies, Inc. - Atlanta GA

International Classification:

G03F 700

US Classification:

430306

Abstract:

Multilayer printing plates having layers with differing moduli are made by exposing through a photographic negative a plurality of layers comprising a solid photocurable cap and al least one liquid photocurable layer.

US Patent:

53709683, Dec 6, 1994

Filed:

Feb 15, 1994

Appl. No.:

8/197107

Inventors:

William K. Goss - Smyrna GA
Michael W. Yang - Marietta GA

Assignee:

W.R. Grace & Co.-Conn. - New York NY

International Classification:

G03C 1492

US Classification:

430271

Abstract:

Photocurable elements which are useful for preparing flexographic printing plates are provided which comprise a printing layer and a contiguous base layer, the printing layer comprising about 40 to 95 parts by weight of an elastomeric block copolymer, about 5 to 60 parts by weight of a second elastomeric polymer which is incompatible with the block copolymer, a photopolymerizable monomer, and a photoinitiator. The printing layer preferably also comprises an actinic radiation scattering and absorbing pigment. Also provided are relief printing plates prepared from the photocurable elements. The printing plates have a tack-free surface having excellent ink transfer properties, abrasion resistance, and solvent resistance. A high level of exposure latitude may also be provided in the photocurable elements of the invention.