Imaging blanket with thermal management properties

Patent metadata

Field	Value
Publication number	US-2020307293-A1
Application number	US-201916368744-A
Country	US
Kind code	A1
Filing date	Mar 28, 2019
Priority date	Mar 28, 2019
Publication date	Oct 1, 2020
Grant date	—

Abstract

Provided herein is an imaging blanket for variable data lithography comprising (i) a substrate and (ii) a thermally-conductive composition disposed on the substrate comprising a silicone elastomer and a thermally-conductive filler selected from metal oxides, wherein the thermally-conductive composition has a thermal conductivity ranging from about 0.6 W/m2 to about 1.6 W/m2. Further provided herein a method of making the imaging blanket, as well as a printing system comprising the imaging blanket, wherein the imaging blanket has improved thermal conductivity.

First claim

What is claimed is:

1 . An imaging blanket for variable data lithography comprising:
a substrate; and a thermally-conductive composition comprising a silicone elastomer and at least one thermally-conductive filler disposed on the substrate, wherein the thermally-conductive composition has a thermal conductivity ranging from about 0.6 W/m 2 to about 1.6 W/m 2 and a Shore A hardness ranging from about 40 Shore A to about 100 Shore A.

2 . The imagine blanket of claim 1 , wherein the at least one thermally-conductive filler is selected from the group consisting of boron nitride and aluminum oxide.

3 . The imaging blanket of claim 1 , wherein the at least one thermally-conductive filler is present in the thermally-conductive composition in an amount ranging from about 1% to about 15% by weight, based on the total weight of the thermally-conductive composition.

4 . The imaging blanket of claim 1 , wherein the at least one thermally-conductive filler is present in the thermally-conductive composition in an amount ranging from about 5% to about 10% by weight, based on the total weight of the thermally-conductive composition.

5 . The imaging blanket of claim 1 , wherein the substrate comprises at least one material selected from the group consisting of metals, polyimides, plastic composites, and woven fabrics.

6 . The imaging blanket of claim 1 , further comprising a top coat comprising fluorosilicone and at least one infrared-absorbing filler.

7 . The imaging blanket of claim 6 , wherein the at least one infrared-absorbing filler is carbon black.

8 . The imaging blanket of claim 1 , wherein the thermally-conductive composition has a thermal conductivity ranging from about 0.5 W/m 2 to about 0.8 W/m 2 .

9 . The imaging blanket of claim 1 , wherein the thermally-conductive composition has a Shore A hardness ranging from about 60 Shore A to about 80 Shore A.

10 . The imaging blanket of claim 1 , wherein the thermally-conductive composition further comprises at least one catalyst.

11 . The imaging blanket of claim 10 , wherein the at least one catalyst is a platinum catalyst.

12 . The imaging blanket of claim 1 , wherein the silicone elastomer is a room temperature vulcanization silicone rubber.

13 . The imaging blanket of claim 1 , wherein a temperature of the imaging blanket does not increase more than about 5° C. after about 20 revolutions of the imaging blanket during printing.

14 . The imaging blanket of claim 1 , wherein a temperature of the imaging blanket does not increase more than about 3° C. after about 20 revolutions of the imaging blanket during printing.

15 . The imaging blanket of claim 1 , wherein the temperature of the imaging blanket is below about 28° C. after about 20 revolutions of the imaging blanket during printing.

16 . A method of making an imaging blanket for variable data lithography, the method comprising:
applying a thermally-conductive composition comprising a silicone elastomer and at least one thermally-conductive filler to a substrate; and curing the thermally-conductive composition on the substrate, wherein the thermally-conductive composition has a thermal conductivity ranging from about 0.6 W/m 2 to about 1.6 W/m 2 and a Shore A hardness ranging from about 40 Shore A to about 100 Shore A.

17 . The method of claim 16 , wherein curing the thermally-conductive composition occurs at room temperature.

18 . The method of claim 16 , wherein the imaging blanket has a thermal conductivity ranging from about 0.5 W/m 2 to about 0.8 W/m 2 .

19 . The method of claim 16 , further comprising:
applying a top coat comprising a fluorosilicone and at least one infrared-absorbing filler to the imaging blanket; and curing the top coat.

20 . A method of enhancing the thermal conductivity of an imaging blanket for variable data lithography, the method comprising:
coating the imaging blanket with a thermally-conductive composition comprising a silicone elastomer and at least one thermally-conductive filler; and curing the thermally-conductive composition on the substrate to create a coated imaging blanket, wherein the coated imaging blanket has a thermal conductivity ranging from about 0.6 W/m 2 to about 1.6 W/m 2 and a Shore A hardness ranging from about 40 Shore A to about 100 Shore A.

Assignees

• Xerox Corp

Inventors

• Sambhy Varun
• Sheflin Joseph
• Knausdorf Peter
• Petropoulos Mark C
• Lestrange Jack T
• Badesha Santokh S

Classifications

• B41N10/04

  multi-layer · CPC title

• B41N2210/10

  characterised by inorganic compounds, e.g. pigments · CPC title

• G03F7/0002

  Lithographic processes using patterning methods other than those involving the exposure to radiation, e.g. by stamping · CPC title

• B41N2210/02

  Top layers · CPC title

• B41M1/06 Primary

  Lithographic printing · CPC title