Electro-optic displays
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[0067] An internal phase was prepared comprising polymer-coated titania white particles and polymer-coated carbon black particles in a hydrocarbon suspending fluid. This internal phase was encapsulated in gelatin / acacia microcapsules substantially as described in Paragraphs [0069] to [0074] of the aforementioned 2002 / 0180687. The resultant microcapsules were separated by size and capsules having an average particle size of about 35 μm were used in the following experiments. The microcapsules were mixed into a slurry with a polyurethane binder and coated by a roll-to-roll process at a dry coating weight of 18 g m−2 on to the surface of a 7 mil (177 μm) poly(ethylene terephthalate) film carrying an indium tin oxide (ITO) layer on one surface, the microcapsules being deposited on the ITO-covered surface, substantially as described in Paragraphs [0075] and [0076] of the aforementioned 2002 / 0180687. The capsule-bearing film was then formed into a front plane laminate by laminating it to ...
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