摘要:
The invention relates to an ink jet printer nozzle plate containing nozzle holes and having a durable non-wettable layer on at least one surface thereof. The nozzle plate includes a polyimide material and the non-wettable layer contains a derivative of an amine-terminated silane compound, the amine-terminated silane compound derivative being covalently bound to the polyimide material of the nozzle plate. The layer also contains a derivative of a polydialkylsiloxane compound having a number average molecular weight ranging from about 400 to about 150,000 and an end group reactive with the amine-terminated silane compound derivative. The polydialkylsiloxane compound derivative is bound to the amine-terminated silane compound derivative by a condensation reaction to provide the durable non-wettable layer on the surface of the nozzle plate. Because of covalently bonding the silane and polydialkylsiloxane materials to the polyimide, the non-wettable layer remains substantially durable throughout the life of a printhead containing the nozzle plate.
摘要:
The present disclosure relates to chemically processed toner that makes use of aqueous dispersions of release agent and/or pigment and solutions of a polymeric resin binder. The polymer solution may be prepared in an organic solvent wherein the organic solvent has some level of solubility in water. The polymer solution may then be combined with an aqueous dispersion of pigment and/or release agent which dispersions may include an aqueous polyelectrolyte and/or an aqueous dispersion of colloidal particles. This may be followed by agglomerating and forming particles of toner of a desired number and/or volume average particle size and/or degree of circularity.
摘要:
A chemically prepared toner for electrophotographic printers and method therefor using a unique polymeric dispersant. The chemically prepared toner includes agglomerated polymeric dispersant stabilized pigment particles, a fuser release agent, a charge control agent dispersion, and a self-stabilized essentially surfactant free latex binder. The polymeric dispersant includes at least three segments, a hydrophilic polymeric segment, a hydrophobic polymeric segment, and a protective colloid or reactive surfactant segment. The weight average molecular weight range of the dispersant ranges from about 5,000 to about 30,000, and a hydrophobicity ranging from about 10 to about 90 percent by weight. The chemically prepared toner includes agglomerated toner particles have a unimodal particles size distribution with a number average particle size (N) ranging from about 5.0 to about 8.5 microns and a volume average particle size (V) ranging from about 5.0 to about 8.5 microns.
摘要:
A method for making toner particles having reduced toner charge transfer sensitivity when used in electrophotographic printers. The method includes preparing a dispersion of pigment, a fuser release agent, and a polymeric dispersant. The polymeric dispersant has a hydrophilic polymeric segment and at least one segment selected from the group consisting of a protective colloid segment and reactive surfactant segment. The polymeric dispersant also has a weight average molecular weight ranging from about 5,000 to about 30,000 as determined by gel permeation chromatography, and a hydrophobicity ranging from about 10 to about 90 percent by weight. The dispersion is mixed with a latex binder dispersion to provide a toner mixture. The toner mixture is agglomerated while stirring the mixture at an elevated temperature to provide toner particles.
摘要:
An ink composition comprises a colorant and an additive. The additive is selected from the group consisting of first dispersants synthesized from an aromatic mercaptan, a hydrophilic monomer, a hydrophobic polymeric reactant having a siloxyl substituent and a first stabilizing reactant; second dispersants synthesized from a non-aromatic mercaptan, a hydrophilic monomer, a hydrophobic polymeric reactant having a siloxyl substituent, and a second stabilizing reactant selected from the group consisting of nonylphenoxy (PEG)4-6 methacrylate, nonylphenoxy (PPG)4-6 methacrylate, nonylphenoxy (PEG)4 6 acrylate, nonylphenoxy (PPG)4-6 acrylate and mixtures thereof; humectant mixtures comprising a bis-hydroxy terminated thioether, a lactam, and a compound selected from the group consisting of polyalkylene glycols, polyol/alkylene oxide condensates and mixtures thereof; and mixtures thereof.
摘要:
The present disclosure relates to chemically processed toner that makes use of aqueous dispersions of release agent and/or pigment and solutions of a polymeric resin binder. The polymer solution may be prepared in an organic solvent wherein the organic solvent has some level of solubility in water. The polymer solution may then be combined with an aqueous dispersion of pigment and/or release agent which dispersions may include an aqueous polyelectrolyte and/or an aqueous dispersion of colloidal particles. This may be followed by agglomerating and forming particles of toner of a desired number and/or volume average particle size and/or degree of circularity.
摘要:
A method for improving adhesion between polymeric materials is provided. The method includes treating a surface of a first polymeric material with plasma of oxygen gas and hydrogen-containing gas. The first polymeric material may be a fully cured polymeric material. A second polymeric material may then be deposited on the plasma treated surface of the first polymeric material. The second polymeric material may be an uncured polymeric material. This plasma treatment may be used in improving the adhesion between polymeric components of an inkjet printer. It provides good adhesion between the polymeric components of the inkjet printer even after long exposure to ink.
摘要:
An emulsion aggregation toner formulation for electrophotography and a method for preparation thereof. The emulsion aggregation toner formulation includes a polyester resin emulsion formed using an extruded polyester binder resin having a broad molecular weight distribution. The extruded polyester binder resin is formed using a plurality of polyester binder resins. Further, the emulsion aggregation toner formulation comprises at least one colorant dispersion and a wax dispersion.
摘要:
The present disclosure relates to chemically processed toner. The toner may be prepared by an emulsion aggregation method by forming a polyester dispersion wherein the polyester has an acid value of about 5 to about 50 and a particle size of about 50 to about 500 nanometers. The polyester dispersion may then be combined with a pigment and/or release agent dispersion wherein the pigment and/or release agent dispersion may contain a dispersant. This may then be followed by heating and recovering agglomerated toner particles wherein the toner particles may have a mean particle size of about 3 to about 15 microns and an average degree of circularity of between about 0.90 to about 1.0.
摘要:
Thermal inkjet printing through nozzles of width of about 25 microns or less is done with an ink having epoxy material suspended in the ink by a graft polymer having acid or other hydrophilic backbone, a hydrophobic side chain, and a stabilizing side chain, in which the molar ratio of hydrophilic moiety to hydrophobic moiety to stabilizing moiety is about 6:1:1 to 0:10:1 respectively.