Abstract: A marking apparatus is disclosed in which a propellant stream is passed through a channel and directed toward a substrate. A liquid marking material, such as ink, is controllably introduced into the propellant stream and imparted with sufficient kinetic energy thereby to be made incident upon a substrate. A multiplicity of channels for directing the propellant and marking material allow for high throughput, high resolution marking. Multiple marking materials may be introduced into the channel and mixed therein prior to being made incident on the substrate, or mixed or superimposed on the substrate without registration. One example is a single-pass, full-color printer.

Abstract: In a ballistic aerosol marking device or the like, marking material flows from a material reservoir to a delivery channel via a port. Flow of marking material is facilitated by the provision of electrostatic marking material moving structures in or near the walls of the marking material reservoir. Marking material may be set into a continuous motion past the port and controllably extracted from the reservoir into the channel.

Abstract: Disclosed is a process for depositing marking material onto a substrate which comprises (a) providing a propellant to a head structure, said head structure having a channel therein, said channel having an exit orifice with a width no larger than about 250 microns through which the propellant can flow, said propellant flowing through the channel to form thereby a propellant stream having kinetic energy, said channel directing the propellant stream toward the substrate, and (b) controllably introducing a particulate marking material into the propellant stream in the channel, wherein the kinetic energy of the propellant particle stream causes the particulate marking material to impact the substrate, and wherein the particulate marking material comprises particles which comprise a resin and a colorant, said particles having an average particle diameter of no more than about 7 microns and a particle size distribution of GSD equal to no more than about 1.

Abstract: A method for providing three dimensional optical memory storage for computers. The method comprises subjecting a nanocomposite to irradiation. The nanocomposite comprises a matrix of particles of a liquid core resin within an inner shell resin and an outer shell resin. The inner shell resin retains the liquid core resin while the outer shell resin forms a continuous phase of the matrix. The particles of core resin contain at least one photosensitive compound and are in an array in the matrix. The continuous phase is substantially free of photosensitive compound. The irradiation may be a single beam of irradiation selectively focused on individual particles in the array to effect photobleaching of individual particles or a two-photon irradiation of a wavelength to effect photobleaching.

Abstract: A process for depositing marking material onto a substrate which includes (a) providing a propellant to a head structure, the head structure having a channel therein, the channel having an exit orifice with a width no larger than about 250 microns through which the propellant can flow, the propellant flowing through the channel to form thereby a propellant stream having kinetic energy, the channel directing the propellant stream toward the substrate, and (b) controllably introducing a particulate marking material into the propellant stream in the channel, wherein the kinetic energy of the propellant particle stream causes the particulate marking material to impact the substrate, and wherein the particulate marking material includes particles which include a resin and a colorant, the particles having an average particle diameter of no more than about 7 microns and a particle size distribution of GSD equal to no more than about 1.25, wherein the particles are prepared by an emulsion aggregation process.

Abstract: A ballistic aerosol marking device includes, marking material which flows from a material reservoir to a delivery channel via a port. Flow of marking material is facilitated by the creation of a fluidized bed or aerosol of marking material in the reservoir. Gas flow together with mechanical or electromechanical assistance can be used to assist in the generation of the fluidized bed or aerosol.

Abstract: A device for the transport of particulate marking material includes a plurality of interdigitated electrodes formed on a substrate. An electrostatic traveling wave may be generated across the electrodes to sequentially attract particles of marking material, and thereby transport them to a desired location. The electrodes may be integrally formed with driving circuitry, and may be staggered to minimize or eliminate cross-talk.

Abstract: A method and apparatus for recycling marking surfaces such as office paper is described. The system scans a marking surface, determines the location of printing on the marking surface and deposits erasing material directly over the printing. Because the distribution of erasing material is confined to the printed areas, the use of erasing material is minimized. The described system can be easily adapted for use in traditional copying systems to recycle paper.

Abstract: A composition including a matrix comprised of particles comprised of a core resin and a shell resin thereover, wherein the core resin contains a covalently bonded photosensitive compound, and wherein the shell resin is the continuous phase of the matrix.

Abstract: The present invention is a method and system for lithographic printing by controlling the surface energy of a printing plate to affect the hydrophilic and hydrophobic properties of the printing plate. These properties enable the ink to be applied to the printing plate in an image-wise manner and provides for rapid production of images on a recording medium. The lithographic printing plate may be rewritten repeatedly between printing jobs or may even be rewritten between individual recording media.

Abstract: A print head is disclosed for use in a marking apparatus in which a propellant stream is passed through a channel and directed toward a substrate. Marking material, such as ink, toner, etc., is controllably introduced into the propellant stream and imparted with sufficient kinetic energy thereby to be made incident upon a substrate. A multiplicity of channels for directing the propellant and marking material allow for high throughput, high resolution marking. Multiple marking materials may be introduced into the channel and mixed therein prior to being made incident on the substrate, or mixed or superimposed on the substrate without registration.

Abstract: A composition including a matrix comprised of particles comprised of a core resin and a shell resin thereover, wherein the core resin contains a covalently bonded photosensitive compound, and wherein the shell resin is the continuous phase of the matrix.

Abstract: Disclosed is an ink composition which comprises an aqueous liquid vehicle, a pigment, and a vesicle-forming lipid, wherein vesicles of the lipid are present in the ink.

Abstract: Disclosed is an ink composition which comprises an aqueous liquid vehicle, a dye, and a vesicle-forming lipid, wherein vesicles of the lipid are present in the ink.

Abstract: A process for the electrophoretic separation of charged macromolecules includes applying to the macromolecules a periodic sequence of pulses. Each period comprises a multiplicity of electric field pulses of negative and positive polarities. The negative polarity pulses are applied for a longer total time duration than the positive polarity pulses within each period. The average intensity of the negative polarity pulses is less than the average intensity of the positive polarity pulses.

Abstract: A process for the electrophoretic separation of charged macromolecules includes applying to the macromolecules a periodic sequence of pulses. Each period comprises a multiplicity of electric field pulses of negative and positive polarities. The negative polarity pulses are applied for a longer total time duration than the positive polarity pulses within each period. The average intensity of the negative polarity pulses is less than the average intensity of the positive polarity pulses.

Abstract: The base sequence of large single stranded nucleic acids is determined by retarding the migration rate of a nucleic acid fragment of n bases below a migration rate which would otherwise be the same as the migration rate of a nucleic acid fragment of n bases in a polyacrylamide gel under continuous field gel electrophoresis. A plurality of sequences of electric field pulses is applied to the gel in one dimension.

Abstract: A process for enabling the separation of a mixture of DNA fragments comprising (1) providing an electrophoresis devive; (2) adding to the device a solution mixture containing DNA fragments of different lengths; (3) energizing the device, thereby creating a sequence of unidirectional uniform electric field pulses therein, said sequence of field pulses alternating between primary positive voltage pulses and secondary pulses of a negative or a positive polarity with less voltage than the primary pulses; (4) calculating the time duration and the field strength required for the primary and secondary field pulses to enable resolution of the fragments into separate and distinct groups corresponding their lengths; and (5) applying in the device the selected primary and secondary fields with intensities and durations corresponding to the size of fragments to be separated. Another embodiment of the invention comprises a computer program that facilitates a DNA gel electrophoresis process.