A flexible medium for a scrolling color changer and method of making thereof. The medium is made by applying an ink using a Meyer Rod which has varying cell lengths along its length. This leaves varying size cells of ink at different locations along the length of the medium. The ink has special characteristics...http://www.google.com.tw/patents/US20030198782?utm_source=gb-gplus-share專利 US20030198782 - Medium for a color changer
