Abstract: Devices, systems, and methods are provided for a front light for use with reflective displays. A display device (such as an e-reader, for example) may include a light source and a light guide able to receive first light from the light source. The light guide includes a plurality of extraction features that control optimal movement of light emitted by the light source through a display stack of the display device. The extraction feature is provided in a wedge shape at an angle such that when light refracts from the extraction feature, it is directed towards the reflective LCD display at an incidence angle close to the display normal for the reflected light to exhibit similar properties as the reflected light from the EPD panel.

Abstract: Devices, systems, and methods are provided for a front light for use with reflective displays. A display device (such as an e-reader, for example) may include a light source and a light guide able to receive first light from the light source. The light guide includes a plurality of extraction features that control optimal movement of light emitted by the light source through a display stack of the display device. The extraction feature is provided in a wedge shape at an angle such that when light refracts from the extraction feature, it is directed towards the reflective LCD display at an incidence angle close to the display normal for the reflected light to exhibit similar properties as the reflected light from the EPD panel.

Abstract: Systems, methods, and computer-readable media are disclosed for ambient light sensing using light guides. In one embodiment, an example device may include a cover layer, a light guide, a light emitting diode disposed adjacent to an edge surface of the light guide, and an ambient light sensor disposed adjacent to the light emitting diode. The ambient light sensor may be configured to sense ambient light that propagates through the cover layer and the light guide.

Abstract: An electroluminescent device and a method of making an electroluminescent device that includes one or more optical spacers are disclosed. In one embodiment, the method includes forming an electroluminescent element on a substrate. The method further includes selectively thermally transferring an optical spacer.

Abstract: An electroluminescent device and a method of making an electroluminescent device that includes one or more optical spacers are disclosed. In one embodiment, the method includes forming an electroluminescent element on a substrate. The method further includes selectively thermally transferring an optical spacer.

Abstract: Edge-emitting organic light emitting diode (OLED) devices having optical microstructures and methods for fabricating them. The edge-emitting OLEDs include a substrate, an organic electroluminescent layer overlaying the substrate surface, and optical microstructures functioning as turning optics and separated from the OLEDs. The turning optics reflect and redirect the light from the edge-emitting OLEDs away from the top of the substrate, or through and away from the bottom of the substrate.

Abstract: Substrate films, thermal mass transfer donor elements, and methods of making and using the same are provided. In some embodiments, such substrate films and donor elements include at least two dyads, wherein each dyad includes an absorbing first layer and an essentially non-absorbing second layer. Also provided are methods of making a donor element that includes an essentially non-absorbing substrate, an absorbing first layer, and a non-absorbing second layer, wherein the composition of the essentially non-absorbing substrate is essentially the same as the composition of the essentially non-absorbing second layer.

Abstract: A composition comprised of resin and colorant, and wherein the colorant is stabilized with an ultra-violet stabilizer.

Abstract: A composition comprised of resin and colorant, and wherein the colorant is stabilized with an ultra-violet stabilizer.

Abstract: A process which comprises mixing a carrier core with a polymer core and polymer shell and wherein the polymer shell is present as a coating on said core and said polymer core, wherein said polymer core is generated by emulsification of and heating of monomer forming a seed latex; adding a portion of said seed latex to said emulsification mixture, followed by heating and adding another second portion of said seed latex; and wherein said shell is generated by emulsion polymerization of a monomer, followed by heating.

Abstract: A process which comprises mixing a carrier core with a polymer core and polymer shell and wherein the polymer shell is present as a coating on said core and said polymer core, wherein said polymer core is generated by emulsification of and heating of monomer forming a seed latex; adding a portion of said seed latex to said emulsification mixture, followed by heating and adding another second portion of said seed latex; and wherein said shell is generated by emulsion polymerization of a monomer, followed by heating.

Abstract: A thermal mass transfer donor element is provided that includes a thermal transfer layer and a light-to-heat conversion layer, wherein the light-to-heat conversion layer has at least two regions exhibiting different absorption coefficients. The thermal transfer donor elements provided can improve imaging performance by increasing transfer sensitivity and decreasing imaging defects.

Abstract: A micro-powder includes: (i) a sub-micron sized powder recovered from a synthetic latex emulsion of polymer and surfactant; (ii) a conductive filler incorporated into the powder; and (iii) optional charge enhancing additives incorporated into the powder. The conductive micro-powder finds particular utility as a coating for carrier core particles of toner and developer compositions.

Abstract: A thermal mass transfer donor element is provided that includes a thermal transfer layer and a light-to-heat conversion layer, wherein the light-to-heat conversion layer has at least two regions exhibiting different absorption coefficients. The thermal transfer donor elements provided can improve imaging performance by increasing transfer sensitivity and decreasing imaging defects.

Abstract: A carrier comprised of a core and thereover a polymer generated from (1) a polymer containing amine groups, and (2) a second polymer containing sulfonic functional groups.

Abstract: A carrier comprised of a core and thereover a polymer generated from a blend of a polymer containing amine groups and a second polymer containing carboxylic acid functional groups.

Abstract: A carrier comprised of a core and thereover a polymer generated from the reaction of a component containing amine groups and a component containing epoxy groups.

Abstract: A composition comprised of a core and thereover a polymer of (1) polystyrene/alkyl methacrylate/dialkylaminoethyl methacrylate, (2) polystyrene/alkyl methacrylate/alkyl hydrogen aminoethyl methacrylate, (3) polystyrene/alkyl acrylate/dialkylaminoethyl methacrylate, or (4) polystyrene/alkyl acrylate/alkyl hydrogen aminoethyl methacrylate.

Abstract: A carrier comprised of a core and a polymer coating of (1) styrene/monoalkylaminoalkyl methacrylate or (2) styrene/dialkylaminoalkyl methacrylate.

Abstract: A carrier comprised of a core and thereover a polymer of (1) methylmethacrylate and a monoalkyl aminoalkyl methacrylate, or (2) a polymer of methylmethacrylate and dialkylaminoalkyl methacrylate.