Controlling engulfing and sequestering magnetic pads

Details Controlling engulfing and sequestering magnetic pads Controlling engulfing and sequestering magnetic pads

G - Physics

09

F

G09F 9/37 (2006.01) G02B 26/02 (2006.01)

Patent

CA 2366053

Gyricon balls are provided with magnetic pole pieces that allows them to be located into two different positions by means of a further stationary magnetic pad. The magnetic pads are engulfed and sequestered from sight so they do not decrement the brightness of the display. The magnetic pole pieces are made by dispersing magnetic pigments into the polyethylene plastic. The addition of aluminum octoate to one hemisphere of the gyricon ball causes the pigmented plastic on that side of the ball to attempt to envelope the pigmented plastic on parts of the ball that does not have aluminum octoate added during the ball making process.

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