Abstract: A post-treatment composition for a digitally printed image includes a non-polar solvent and a non-ionic surfactant. The non-ionic surfactant is present in an amount ranging from about 0.5 wt % to about 20 wt % of a total weight of substrate used to form the digitally printed image. The post-treatment composition renders the digitally printed image deinkable.

Abstract: A recording material, containing nonionic surfactants, including: a supporting substrate, a first bottom base coat applied to at least one surface of said substrate, and a second topcoat layer applied over said bottom base coat. The supporting substrate or the bottom base coat includes nonionic surfactants that have HLB values that are inferior to 15. Also disclosed is a method to deink printed waste papers wherein the waste papers contain recording materials, containing nonionic surfactants such as defined herein.

Abstract: A process for removing ink from a printed media substrate. Such process includes the step of providing a media substrate including an ink printed image wherein the ink composition or the media substrate contains photolabile entities. Then the process includes the step of applying UV light on the printed substrate wherein the emitted UV light has a wavelength value which is below the threshold wavelength of the photolabile entities.

Abstract: An ink dispersion includes an ink vehicle and a colorant dispersed in the ink vehicle. The ink vehicle includes a non-ionic surfactant and a solvent. The non-ionic surfactant has an HLB value ranges from about 5 to about 16, and is chosen from: i) a material represented by one of the formulas R1—O—(OR2)n—H, R1—(OR2)n—OH or R1—C6H4—(OR2)n—OH, wherein: R1 is chosen from a) a linear or cyclic alkyl group including from 3 to 20 carbon atoms, or b) a substituted or non-substituted alkyl group including from 6 to 18 carbon atoms, R2 is chosen from CH2CH2 or CH2CH2CH2, and n is an integer chosen from 2 to 100; or ii) a diester having at least one ethylene oxide repeating unit; or iii) an octylphenol having at least one ethylene oxide repeating unit.

Abstract: A recording material, containing nonionic surfactants, including: a supporting substrate, a first bottom base coat applied to at least one surface of said substrate, and a second topcoat layer applied over said bottom base coat. The supporting substrate or the bottom base coat includes nonionic surfactants that have HLB values that are inferior to 15. Also disclosed is a method to deink printed waste papers wherein the waste papers contain recording materials, containing nonionic surfactants such as defined herein.

Abstract: The present disclosure is drawn to apparatuses, methods, and systems involving liquid electrophotographic printing. Generally, a liquid electrophotographic printer can comprise an ink application device that is configured to apply liquid electrophotographic ink to a substrate, and a roller having a tacky surface that removes excess material from the surface of the substrate thereby pretreating the substrate prior to receiving the liquid electrophotographic ink.

Abstract: An inkjet print medium includes a base substrate, a layer of a deinking solution at least partially diffused into the base substrate, and an ink-receiving layer established on the layer of the deinking solution. The deinking solution includes a flocculant in an amount ranging from about 0.1 wt. % to about 40 wt. % of a total wt. % of the deinking solution.

Abstract: A digital-printing substrate and method of improving adhesion of a substrate to an liquid electrophotographic (LEP) ink in LEP printing both employ a composite coating. The composite coating includes from 4.5% to 9.5% by weight of a mineral pigment and from 0.5% to 2% by weight of an organic binder uniformly dispersed in water. The mineral pigment has a particle size less than 1 micron. The organic binder comprises a hydroxylated polymer having an average molecular weight greater than 50,000. A weight percentage of hydroxyl groups in the hydroxylated polymer is equal to or greater than a weight percentage of acidic groups in an LEP ink. The composite coating enhances adhesion of the LEP ink to the substrate comprising the composite coating dried on a surface of the substrate.

Abstract: Methods and devices for measuring conductivity of ink in a printing system are disclosed. An embodiment of the method is used with a printing system comprising a developer roller, wherein the ink is formed on the developer roller using electrostatic forces. The method comprises printing on a substrate using the ink; measuring a first current that charges the developer roller during the printing; and determining the conductivity of the ink, wherein the conductivity is proportional to the square of the first current.

Abstract: A process for removing ink from a printed media substrate. Such process includes the step of providing a media substrate including an ink printed image wherein the ink composition or the media substrate contains photolabile entities. Then the process includes the step of applying UV light on the printed substrate wherein the emitted UV light has a wavelength value which is below the threshold wavelength of the photolabile entities.

Abstract: The present disclosure is drawn to apparatuses, methods, and systems involving liquid electrophotographic printing. Generally, a liquid electrophotographic printer can comprise an ink application device that is configured to apply liquid electrophotographic ink to a substrate, and a roller having a tacky surface that removes excess material from the surface of the substrate thereby pretreating the substrate prior to receiving the liquid electrophotographic ink.

Abstract: Toner compositions for electrophotographic printing are disclosed, along with methods for making such toners, and printing systems utilizing them. The disclosed process imparts qualities to the toner making it more efficiently and effectively incorporated into printed images.

Abstract: Methods for creating a memory device can include depositing a sense layer, patterning the sense layer to form a plurality of magnetic data cells, depositing a separation layer over the plurality of data cells, depositing a reference layer over the separation layer, and patterning the reference layer to form an elongated magnetic reference cell wherein the elongated magnetic reference cell extends uninterrupted along more than one of the plurality of magnetic data cells.

Abstract: Methods for creating a memory device can include depositing a sense layer, patterning the sense layer to form a plurality of magnetic data cells, depositing a separation layer over the plurality of data cells, depositing a reference layer over the separation layer, and patterning the reference layer to form an elongated magnetic reference cell wherein the elongated magnetic reference cell extends uninterrupted along more than one of the plurality of magnetic data cells.

Abstract: The invention includes an optical signal transmission transducer. The optical signal transmission transducer includes a magnetic tunnel junction. The magnetic tunnel junction can be tuned to switch states in response to selected frequencies of a magnetic field. A light source can be modulated based upon states of the magnetic tunnel junction. An alternate embodiment of the optical signal transmission transducer includes a light transducer that generates magnetic sense signals based upon reception of modulated light signals. The light transducer can be integrated with a magnetic tunnel junction. The magnetic tunnel junction can be tuned to switch states in response to selected frequencies of the magnetic sense signal.

Abstract: In one embodiment, a memory device includes a plurality of magnetic data cells and a magnetic reference cell extending uninterrupted along more than one of the plurality of data cells.

Abstract: A magnetic memory cell write current threshold detector. The magnetic memory cell write current threshold detector includes a first MRAM test cell receiving a write current and sensing when the write current exceeds a first threshold, and a second MRAM test cell receiving the write current and sensing when the write current exceeds a second threshold.

Abstract: A thermally written magnetic memory device is disclosed. The thermally written magnetic memory device includes a plurality of thermally written magnetic tunnel junction devices. Each thermally written magnetic tunnel junction device includes a super-paramagnetically stable data layer. The data layer includes a high coercivity at a read temperature such that a bit of data previously written to the data layer at a higher write temperature can be read from the data layer at the read temperature. The data layer has a low coercivity at the higher write temperature and data is written to the data layer at the higher write temperature. Therefore, at the lower read temperature, the thermally written magnetic memory device is a read only non-volatile memory and the data stored therein can be read many times but new data cannot be written to the data layer at the read temperature.

Abstract: Embodiments of the present invention provide a magnetic memory. In one embodiment, the magnetic memory comprises a magnetic memory cell and a conductor configured to provide a magnetic field to write the magnetic memory cell. Structure is configured to direct the magnetic field and reduce coercivity of the magnetic memory cell.

Abstract: A magnetic memory cell includes a first magneto-resistive device and a second magneto-resistive device. The first magneto-resistive device has a first sense layer. The second magneto-resistive device is connected in series with the first magneto-resistive device. The second magneto-resistive device has a second sense layer. At least one controlled nucleation site is placed on at least one of the first sense layer and the second sense layer.