Claims
- 1. A method for printing carbonless forms on an electrostatic printer or copier which comprises:providing a recording sheet comprising a substrate, said substrate being coated with a coated front (CF) coating comprising a developer, hollow microspheres and a binder composition, wherein the binder composition comprises polyvinyl alcohol; and printing on the recording sheet with an electrostatic printer or copier.
- 2. The method of claim 1 wherein said binder composition further comprises at least one other binder material.
- 3. The method of claim 2 wherein said binder composition further comprises a synthetic binder selected from the group consisting of polyvinyl acetate and copolymers thereof, styrene butadiene rubber (SBR), polystyrene, butadiene-styrene copolymers, polyvinylpyrrolidone, ethyl acrylate, butyl acrylate, methyl methacrylate, acrylamide and mixtures thereof.
- 4. The method of claim 2 wherein said binder composition further comprises a latex binder selected from the group consisting of sytrenebutadiene latexes, carboxylated sytrenebutadiene latexes, acrylic latexes, and acrylonitrile latexes.
- 5. The method of claim 4 wherein said latex is a sytrenebutadiene latex.
- 6. The method of claim 1 wherein said binder composition comprises from about 2 to 30 percent by dry weight of the CF coating.
- 7. The method of claim 1 wherein said CF coating comprises from about 2 to 12 percent by dry weight polyvinyl alcohol.
- 8. The method of claim 7 wherein said binder composition further comprises a styrenebutadiene latex.
- 9. The method of claim 8 wherein said binder composition further comprises a starch binder.
- 10. The method of claim 1 wherein said microspheres have a diameter from about 0.3μ to 15μ.
- 11. The method of claim 1 wherein said developer is a phenolic resin.
- 12. The method of claim 11 wherein said phenolic resin is a zincated phenolic resin.
- 13. The method of claim 1 wherein said substrate is paper or a polymeric material.
- 14. The method of claim 13 wherein said substrate is polyethylene terephthalate.
- 15. A process for electrostatically printing carbonless sheets and producing a carbonless formset comprising:providing a plurality of carbonless sheets, including at least a first substrate containing a coating of an encapsulated color former and a second substrate containing a second coating comprising a color developer in a binder matrix of polyvinyl alcohol and latex, wherein the first and second substrates are positioned such that the first and second coatings are juxtaposed; printing said sheets on an electrostatic copier or printer; and applying adhesive to the formset sheets after the sheets have been printed on the electrostatic copier or printer thereby forming a collated formset wherein a coating containing an encapsulated color former is in contact with a coating containing a color former.
- 16. The process of claim 15 wherein said carbonless formset further comprises at least one intermediate sheet containing a coating of an encapsulated color former on one surface and a coating comprising a color developer in a binder matrix of polyvinyl alcohol and latex on the other surface.
- 17. A method for printing carbonless forms on an electrostatic printer or copier which comprises:providing a recording sheet comprising a substrate, said substrate being coated with a coated front (CF) coating comprising from about 4 to 40% by dry weight of a developer, from about 5 to 50% by dry weight hollow microspheres and from about 2 to 30% by dry weight of a binder composition, wherein the binder composition comprises polyvinyl alcohol and a latex binder, said polyvinyl alcohol being from about 2 to 12% and said latex binder being from about 2 to 10% by dry weight of said CF coating composition; and printing on the recording sheet with an electrostatic printer or copier.
- 18. The method of claim 17 wherein said CF coating composition comprises from about 10 to 25% developer, from about 7 to 20% microspheres, from about 4 to 9% polyvinyl alcohol and from about 3 to 6% latex binder based on dry weight of said CF coating composition.
- 19. The method of claim 17 wherein said CF coating composition further comprises from about 2 to 25% starch.
- 20. The method of claim 19 wherein said CF coating composition comprises from about 4 to 20% starch.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application claims the benefit of U.S. provisional application Serial No. 60/145,406, filed Jul. 23, 1999, the entire disclosure of which is incorporated herein by reference.
US Referenced Citations (6)
Provisional Applications (1)
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Number |
Date |
Country |
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60/145406 |
Jul 1999 |
US |