摘要:
A dispersion and a method therefor wherein the dispersion has composition A or B, whereinA is a nonaqueous dispersion comprising pigment particles having an average size of less than 0.1 micrometer dispersed in an organic medium, andB is an aqueous dispersion comprising certain classes of inorganic pigment particles having an average size of less than 0.1 micrometer dispersed in an aqueous medium, wherein said classes of inorganic pigment particles are selected from the group consisting of metal oxides and metal salts.The method of the invention comprises the steps of vaporizing a pigment or pigment precursor in the presence of a nonreactive gas stream to provide ultrafine pigment or pigment percursor particles, when pigment precursor particles are present, providing a second gas capable of reacting with said ultrafine pigment precursor particles and reacting said second gas with said ultrafine pigment precursor particles to provide ultrafine pigment particles, transporting said ultrafine pigment particles in said gas stream to a dispersing medium, to provide a dispersion of pigment particles in said medium.
摘要:
A dispersion and a method therefor wherein the dispersion has composition A or B, whereinA is a nonaqueous dispersion comprising pigment particles having an average size of less than 0.1 micrometer dispersed in an organic medium, andB is an aqueous dispersion comprising certain classes of inorganic pigment particles having an average size of less than 0.1 micrometer dispersed in an aqueous medium, wherein said classes of inorganic pigment particles are selected from the group consisting of metal oxides and metal salts.The method of the invention comprises the steps of vaporizing a pigment or pigment precursor in the presence of a nonreactive gas stream to provide ultrafine pigment or pigment precursor particles, when pigment precursor particles are present, providing a second gas capable of reacting with said ultrafine pigment precursor particles and reacting said second gas with said ultrafine pigment precursor particles to provide ultrafine pigment particles, transporting said ultrafine pigment particles in said gas stream to a dispersing medium, to provide a dispersion of pigment particles in said medium.
摘要:
Apparatus and methods for treating tissue at or near a sphincter provide for transluminal introduction of an energy delivery device. The device includes a tissue compression member to compress target tissue at or near the sphincter. A radiofrequency energy source is coupleable to the delivery device to deliver radiofrequency energy to the target tissue. Energy is delivered to heat the tissue to a desired temperature. The desired temperature is selected to induce an injury-healing response or to inducing shrinkage of collagen fibers in the target tissue to thereby reduce laxity in the target tissue.
摘要:
A cooked and de-boned substantially intact slab of rib meat is provided. A process for preparing a de-boned rib meat product from a pork or beef rib cut is also provided. The process for preparing the rib meat product involves cooking a length of rib meat having rib bones embedded therein at a temperature and for a time sufficient to enable the removal of the rib bones from the length of rib meat, while maintaining a substantially intact length of rib meat.
摘要:
The invention provides dry electrographic toner compositions comprising toner particles. The toner particles comprise polymeric binder comprising at least one amphipathic copolymer comprising one or more S material portions and one or more D material portions prepared from an organosol reaction process utilizing a liquid carrier reaction medium having a Kauri-Butanol number less than about 30 mL. The S material portion comprises at least one soluble component and at least one non-sorptive component, wherein the non-sorptive component is the reaction product of monomers having an absolute difference in Hildebrand solubility parameter from the liquid carrier of about 3.0 MPa1/2 or greater. Additionally, dry electrographic toner compositions are provided wherein the toner particles comprise polymeric binder comprising at least one amphipathic copolymer comprising one or more S material portions and one or more D material portions. The S material portion of the amphipathic copolymer has an average Hildebrand solubility parameter of from about from about 16 MPa1/2 to about 17.3 MPa1/2, and comprises at least one non-sorptive component having an average Hildebrand solubility parameter that is at least about 0.4 MPa1/2 greater than the average Hildebrand solubility parameter of the S material portion.The resulting dry toner composition can exhibit excellent final image durability characteristics, and can also provide excellent images at low fusion temperatures on a final image receptor.
摘要:
An electrosurgical medical device and method for creating thermal welds in engaged tissue. In one embodiment, at least one jaw of the instrument defines a tissue engagement plane carrying a variable resistive body of a positive temperature coefficient material that has a selected decreased electrical conductance at each selected increased temperature thereof over a targeted treatment range. The variable resistive body can be engineered to bracket a targeted thermal treatment range, for example about 60° C. to 80° C., at which tissue welding can be accomplished. In one mode of operation, the engagement plane will automatically modulate and spatially localize ohmic heating within the engaged tissue from Rf energy application across micron-scale portions of the engagement surface. In another mode of operation, a variable resistive body will focus conductive heating in a selected portion of the engagement surface.
摘要:
A method of producing a composite image on a final image receptor from image data in a single pass electrophotographic system is provided. The method includes steps for applying liquid transfer assist material comprising charged particles of transfer assist material to at least a portion of an element of the electrophotographic system, along with charged toner particles, in order to provide a composite image layer on a final image receptor in a single pass of a photoreceptive element through transfer of the composite image layer from another element in the system.
摘要:
A system is provided within an electrophotographic imaging environment that removes or decomposes airborne hydrocarbons (as vapor and/or droplets), at least some of which are provided from evaporation or airborne dispersal of hydrocarbon carrier from electrophotographic toners or inks during and imaging process. The system has a catalyst that assists in the oxidation or decomposition of hydrocarbons and a (catalyst and vapor phase) heating and oxygen-providing components including a chemical oxygen-generator. The chemical reaction that occurs in the oxygen generation provides both a) immediate and significant amounts of heat that heats both the catalyst and the gas phase containing the hydrocarbon and the oxygen and b) oxygen to assist in the decomposition and/or oxidation of the hydrocarbon and other airborne materials.
摘要:
An apparatus for oxidizing volatile organic compounds from an electrographic printer may comprising a) a printer system that vents a gas stream containing volatile organic compounds to a first inlet; b) a first mast transfer element transmitting the gas stream to a catalytic treatment system, c) The catalytic treatment system comprising separate contact sections for an unsupported catalyst and a supported catalyst; a diverter system that can direct the gas stream along paths selected from the group consisting of to the unsupported catalyst only, to the supported catalyst only, first the unsupported catalyst and then the supported catalyst, and the supported catalyst and then the unsupported catalyst.
摘要:
The present invention relates to amphipathic copolymeric binder particles chemically grown in a substantially nonaqueous liquid carrier to form an organosol. The invention also pertains to dry particulate electrographic toners incorporating an organosol comprising an amphipathic copolymer wherein the amphipathic copolymer incorporates one or more S portions and one or more D portions. Methods of making dry electrophotographic toner particles, and methods of electrographically forming an image on a substrate using these toners, are also described. Preferably, fluidized drying techniques are used to form the dry toner particles from the organosol.