CPC G09G 3/344 (2013.01) [C09B 67/0013 (2013.01); G02F 1/167 (2013.01); G02F 1/1675 (2019.01); G02F 1/1676 (2019.01); G02F 1/1677 (2019.01); G02F 1/16757 (2019.01); B82Y 30/00 (2013.01); G02F 2001/1678 (2013.01); G02F 2202/022 (2013.01); G02F 2202/28 (2013.01); G09G 2320/0233 (2013.01)] | 13 Claims |
1. A method of forming an electro-optic medium comprising:
providing an internal phase mixture of a non-polar solvent and charged pigment particles,
encapsulating portions of the internal phase mixture in a plurality of capsules,
sieving the plurality of capsules into at least two portions, a first portion comprising capsules having a size distribution between 50 μm and 90 μm in diameter, and a second portion comprising capsules having a size distribution between 20 μm and 49 μm in diameter, and
mixing a polymeric binder with two to five parts by weight of the first portion and one part by weight of the second portion.
|