Compositions compatible with jet printing and methods therefor
AssigneeR.R. Donnelley & Sons Company
InventorsKevin J. Hook, Theodore F. Cyman, Jr., Lawrence Pilon, Jeffrey Zaloom
Life of this patent
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Abstract
An apparatus for controlling application of a substance to a substrate involves the use of a gating agent that blocks the substance from or attracts the substance to the substrate. The apparatus may utilize ink jet technology to apply the gating agent directly to the substrate or to an intermediate surface. The gating agent includes a nonionic surfactant, and water. The gating agent does not contain a discernable amount of dye, pigment or other colorant agent.
Claims17
A device for use in a high speed variable print operation comprising:
- a housing having a surface;
- a series of ejection nozzles disposed on the surface;
- and
- a source of a gating agent communicating with the nozzles, the gating agent comprising:
- from about 0.05 to about 10% by weight of a blocking agent having a multifunctional potential;
- up to about 15% by weight of a surface modifying compound;
- up to about 8% by weight of viscosity modifier such that the gating agent has a viscosity within the range of about 1 to about 14 mPa s;
- and
- the balance of the gating agent comprises a solvent;
- wherein the gating agent has a static surface tension of less than about 40 dynes/cm;
- wherein a printing agent is applied to a further surface, wherein the gating agent is ejected in a pattern on at least one of a final print medium, the printing agent applied to the further surface, and the further surface, and wherein the printing agent is transferred from the further surface to the final print medium.
A device for use in a high speed variable print operation comprising:
- a housing having a surface;
- a series of ejection nozzles disposed on the surface;
- and
- a source of a gating agent communicating with the nozzles, the gating agent comprising:
- from about 0.05 to about 10% by weight of a blocking agent having a multifunctional potential;
- up to about 15% by weight of a surface modifying compound;
- up to about 8% by weight of viscosity modifier such that the gating agent has a viscosity within the range of about 1 to about 14 mPa s;
- and
- the balance of the gating agent comprises a solvent;
- wherein the gating agent has a static surface tension of less than about 40 dynes/cm;
- wherein the housing is disposed within a lithographic printing press.
Dependencies are inferred from the claim text.