Improved medium for a color changer

B - Operations – Transporting – 41 – M

Patent

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Details

B41M 1/20 (2006.01) B41F 13/08 (2006.01) B41M 1/00 (2006.01) B41M 3/00 (2006.01) F21V 9/10 (2006.01) G02B 5/22 (2006.01)

Patent

CA 2196810

A flexible medium (520) for a scrolling color changer and method of making thereof. The medium (520) is made by applying an ink (500, 502, 506) using a Meyer Rod which has varying cell lengths along its length. This leaves varying size cells of ink (500, 502, 506) at different locations along the length of the medium (520). The ink has special characteristics whereby its evaporation rate and viscosity are carefully controlled. The viscosity is such that an amount of levelling (508) will occur, will be equal to the distance between any cells, but that cell to cell levelling will not, in general, occur.

La présente invention concerne un support souple (520) pour dispositif de changement de couleur par défilement et un procédé d'utilisation. Le support (520) est réalisé par application d'une encre (500, 502, 506) au moyen d'une tige de Meyer dont les longueurs de cellules varient sur la longueur de la tige. Cela dépose des cellules d'encre de taille variable (500, 502, 506) en différents points disposés sur la longueur du support (520). L'encre présente des caractéristiques particulières et notamment une vitesse d'évaporation et une viscosité soigneusement vérifiées. La viscosité est telle qu'une certaine égalisation (508) se réalise dans des limites égales à la distance entre n'importe quelles cellules, sans toutefois, en règle générale, que cette égalisation ne se réalise de cellule à cellule.

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