Granted Patent B2

US 9,567,486 · App. 13/601,920 · Granted Feb 14, 2017

Abstract

Claims (17)

1. An imaging member for digital offset lithographic image forming, comprising:

a substrate; and

a reimageable surface layer on and surrounding the substrate that forms an outer surface layer of the imaging member, the reimageable surface layer having a micro-roughened surface and being formed of a fluoroelastomer-silicone composite formed from a reaction mixture comprising a fluoroelastomer, an oxyaminosilane, and an oxysilane-terminated compound,

wherein:

a weight ratio of fluoroelastomer to oxyaminosilane is in a range of between 50:40 and 85:5;

a mole ratio of the oxyaminosilane to the oxysilane-terminated compound is in a range between 2:1 and 1:10;

the weight ratio and the mole ratio are maintained in a final surface layer;

the surface layer further includes an infrared-absorbing filler material; and

the infrared-absorbing filler material is one of carbon-nanotubes and graphene.

2. The imaging member of claim 1 , wherein the oxyaminosilane is an amino-terminated siloxane.

3. The imaging member of claim 1 , wherein the amino-terminated siloxane is an aminopropyl terminated polydimethylsiloxane.

4. The imaging member of claim 3 , wherein the amino-terminated siloxane has a molecular weight in a range of between 500 and 1500.

5. The imaging member of claim 1 , wherein the oxysilane-terminated compound is a triethoxysilylethyl terminated polydimethylsiloxane.

6. The imaging member of claim 1 , wherein the oxysilane-terminated compound is a perfluoropolyether with terminal ethoxysilane groups.

7. The imaging member of claim 1 , wherein the filler is present in an amount of from 5 to 20 weight percent of the surface layer.

8. The imaging member of claim 1 , wherein the filler has an average particle size of from 2 nanometers to 10 microns.

9. The imaging member of claim 1 , wherein the reaction mixture further comprises a ketone solvent.

Assignments (9)