MULTI-LAYER BLANKET

• US 20190322114A1
• Filed: 04/23/2018
• Published: 10/24/2019
• Est. Priority Date: 04/23/2018
• Status: Abandoned Application

• Current Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Original Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Inventors: Sambhy, Varun, Porter, Amy C., Ma, Lin, Tallman, Kyle B., Badesha, Santokh S., Roetker, Michael S.
• Application Number:
  US15/959,856
• Publication Number:
  US 20190322114A1
• Time in Patent Office: Days
• CPC Class Codes: B32B 2255/10 on synthetic resin layer or on natural or synthetic rubber layer
• CPC Class Codes: B32B 2255/26 Polymeric coating
• CPC Class Codes: B32B 2255/28 Multiple coating on one surface
• CPC Class Codes: B32B 2262/02 Synthetic macromolecular fibres
• CPC Class Codes: B32B 2262/0223 Vinyl resin fibres
• CPC Class Codes: B32B 2262/0253 Polyolefin fibres
• CPC Class Codes: B32B 2262/0261 Polyamide fibres
• CPC Class Codes: B32B 2262/0269 Aromatic polyamide fibres
• CPC Class Codes: B32B 2262/0276 Polyester fibres
• CPC Class Codes: B32B 2262/062 Cellulose fibres, e.g. cotton
• CPC Class Codes: B32B 2262/101 Glass fibres
• CPC Class Codes: B32B 2262/14 Mixture of at least two fibres made of different materials
• CPC Class Codes: B32B 2266/0207 Materials belonging to B32B25/00
• CPC Class Codes: B32B 2307/732 Dimensional properties
• CPC Class Codes: B32B 2307/75 Printability
• CPC Class Codes: B32B 2457/00 Electrical equipment
• CPC Class Codes: B32B 25/10 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/20 using fillers, pigments, thixotroping agents
• CPC Class Codes: B32B 27/281 comprising polyimides
• CPC Class Codes: B32B 27/283 : comprising polysiloxanes
• CPC Class Codes: B32B 5/024 : Woven fabric
• CPC Class Codes: B32B 5/08 : the fibres or filaments of a layer being of different substances , e.g. conjugate fibres, mixture of different fibres
• CPC Class Codes: B32B 5/18 : characterised by features of a layer of foamed material
• CPC Class Codes: B32B 5/245 : another layer next to it being a foam layer
• CPC Class Codes: B32B 5/26 : another layer next to it also being fibrous or filamentary relative arrangement of fibres or filaments of different layers B32B5/12
• CPC Class Codes: B32B 7/12 : using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: B41F 3/30 : for lithography proof-print presses B41F3/28
• CPC Class Codes: B41J 2/0057 : where an intermediate transfer member receives the ink before transferring it on the printing material
• CPC Class Codes: B41M 1/06 : Lithographic printing
• CPC Class Codes: B41N 1/003 : with ink abhesive means or abhesive forming means, such as abhesive siloxane or fluoro compounds, e.g. for dry lithographic printing
• CPC Class Codes: B41N 10/00 : Blankets or like coverings; Coverings for wipers for intaglio printing wipers for intaglio printing B41F9/08
• CPC Class Codes: B41N 10/02 : Blanket structure
• CPC Class Codes: B41N 10/04 : multi-layer
• CPC Class Codes: B41N 2210/14 : characterised by macromolecular organic compounds
• CPC Class Codes: B41P 2227/70 : Forming the printing surface directly on the form cylinder
• CPC Class Codes: C08G 77/12 : containing silicon bound to hydrogen C08G77/045 takes precedence
• CPC Class Codes: C08G 77/20 : containing silicon bound to unsaturated aliphatic groups C08G77/045 takes precedence
• CPC Class Codes: C08G 77/24 : halogen-containing groups
• CPC Class Codes: C08K 2201/005 : Additives being defined by their particle size in general
• CPC Class Codes: C08K 3/013 : Fillers, pigments or reinforcing additives
• CPC Class Codes: C08K 3/36 : Silica
• CPC Class Codes: C08K 5/56 : Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
• CPC Class Codes: C08L 83/00 : Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 83/08 : containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
• CPC Class Codes: C09D 183/08 : containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen

Abstract

The present teachings include a transfer member, a multilayer imaging blanket and a variable data lithography system. The transfer member includes a fluorosilicone surface layer. The surface layer includes mixing a first part and a second part. The first part includes a vinyl terminated trifluoropropyl methylsiloxane, an IR absorbing filler, silica and a first solvent. The second part includes an organo platinum complex having vinyl groups, a methyl hydrosiloxanetrifluoropropyl methyl siloxane having hydrosilane groups an inhibitor and a second solvent. The molar ratio of vinyl groups to hydrosilane groups is 0.7:1.0 to about 1.3:1.0 in the mixture. The mixture of the first part and second is coated on a substrate to form the fluorosilicone surface layer.

Claims

1. A transfer member for use in a printer, comprising:

a fluorosilicone surface layer, the surface layer formed by a process comprising;

combining a first part and a second part, the first part comprising a vinyl terminated trifluoropropyl methylsiloxane, an IR absorbing filler, silica and a first solvent, and the second part comprising an organo platinum complex having vinyl groups, a methyl hydrosiloxanetrifluoropropyl methyl siloxane having hydrosilane groups an inhibitor and a second solvent, wherein a molar ratio of the vinyl groups to the hydrosilane groups is about 0.7;

1.0 to about 1.3;

1.0;

coating the first part and the second part on a substrate; and

curing the coating to form the fluorosilicone surface layer.

2. The transfer member according to claim 1, wherein the first solvent is selected from the group consisting of:

butyl acetate, trifluorotoluene, toluene, benzene, methylethylketone, methyl isobutyl ketone, ethyl acetate, propyl acetate, amyl acetate, hexyl acetate and mixtures thereof.

3. The transfer member according to claim 1, wherein the second solvent is selected from the group consisting of:

butyl acetate, trifluorotoluene, toluene, benzene, methylethylketone, methyl isobutyl ketone, ethyl acetate, propyl acetate, amyl acetate, hexyl acetate and mixtures thereof.

4. The transfer member according to claim 1, wherein the IR absorbing filler is selected from the group consisting of:

carbon black, carbon nanotubes and metal oxides.

5. The transfer member according to claim 1, wherein the IR absorbing filler has an average particle size of from about 2 nanometers to about 10 microns.

6. The transfer member according to claim 1, wherein the silica has an average particle size from about 10 nanometers to about 0.2 microns.

7. A multilayer imaging blanket for a variable data lithography printing system, the multilayer imaging blanket comprising:

a multilayer base having a lower contacting surface configured to wrap around a printing cylinder of the variable data lithography printing system; and

a fluorosilicone surface layer coated and cured about the multilayer base, the fluorosilicone surface layer including a first part and a second part,

the first part comprising a vinyl terminated trifluoropropyl methylsiloxane, an IR absorbing filler and silica,

the second part comprising an organo platinum complex having vinyl groups, a methyl hydrosiloxanetrifluoropropyl methyl siloxane having hydrosilane groups and an inhibitor wherein a molar ratio of vinyl groups to hydrosilane groups is about 0.7;

1.0 to about 1.3;

1.0.

8. The multilayer imaging blanket according to claim 7, wherein the IR absorbing filler is selected from the group consisting of:

carbon black, carbon nanotubes and metal oxides.

9. The multilayer imaging blanket according to claim 7, wherein the IR absorbing filler has an average particle size of from about 2 nanometers to about 10 microns.

10. The multilayer imaging blanket according to claim 7, wherein the silica has an average particle size from about 10 nanometers to about 0.2 microns.

11. The multilayer imaging blanket according to claim 7, further comprising a primer layer disposed between the multilayer base and the fluorosilicone surface layer.

12. The multilayer imaging blanket according to claim 7, wherein the multilayer base includes a seamless polyimide substrate.

13. A variable data lithography system, comprising:

a multilayer imaging blanket including;

a multilayer base having a lower contacting surface configured to wrap around a printing cylinder of the variable data lithography printing system, a platinum catalyzed fluorosilicone surface layer coated about the multilayer base wherein the fluorosilicone surface layer coated and cured about the multilayer base, wherein the fluorosilicone surface layer includes a first part and a second part;

the first part comprising a vinyl terminated trifluoropropyl methylsiloxane, an IR absorbing filler and silica,

the second part comprising an organo platinum complex having vinyl groups, a methyl hydrosiloxanetrifluoropropyl methyl siloxane having hydrosilane groups and an inhibitor wherein a molar ratio of vinyl groups to hydrosilane groups is about 0.7;

1.0 to about 1.3;

1.0; and

a primer layer between the multilayer base and the fluorosilicone surface layer;

a fountain solution subsystem configured for applying a layer of fountain solution to the multilayer imaging blanket;

a patterning subsystem configured for selectively removing portions of the fountain solution layer so as to produce a latent image in the fountain solution;

an inking subsystem configured for applying ink over the imaging blanket such that said ink selectively occupies regions of the imaging blanket where fountain solution was removed by the patterning subsystem to thereby produce an inked latent image; and

an image transfer subsystem configured for transferring the inked latent image to a substrate.

14. The variable data lithography system according to claim 13, wherein the IR absorbing filler is selected from the group consisting of:

carbon black, carbon nanotubes and metal oxides.

15. The variable data lithography system according to claim 13, wherein the IR absorbing filler has an average particle size of from about 2 nanometers to about 10 microns.

16. The variable data lithography system according to claim 13, wherein the silica has an average particle size from about 10 nanometers to about 0.2 microns.

17. The variable data lithography system according to claim 13, further comprising a primer layer disposed between the multilayer base and the fluorosilicone surface layer.

18. The variable data lithography system according to claim 13, wherein the multilayer base includes a seamless polyimide substrate.

19. The variable data lithography system according to claim 13, wherein the molar ratio of vinyl groups to hydrosilane groups is about 0.8:

1.0 to about 1.2;

1.0.

20. The variable data lithography system according to claim 13, wherein the molar ratio of vinyl groups to hydrosilane groups is about 0.9:

1.0 to about 1.1;

1.0.