Patent ID: 9511581
Filing Date: 2016-12-06
CPC Classification: B41F,B65H

Claim Text:
1. An apparatus for synchronizing a roll-to-roll transfer device, the apparatus comprising: a thin-film transferred by the roll-to-roll transfer device; a first roller making contact with a lower surface of the thin-film, and rotating with a rotational axis via a first rotational element; a second roller disposed over the first roller, making contact with an upper surface of the thin-film, and rotating with the rotational axis via a second rotational element; a first load sensing element sensing a load of the first roller or a load of the second roller; a control part synchronizing a translational velocity of the first rotational element or the second rotational element based on the load sensed by the first load sensing element; a third roller spaced apart from the first roller along a transfer direction of the thin-film, making contact with the lower surface of the thin-film, and rotating with the rotational axis via a third rotational element; a fourth roller disposed over the third roller, making contact with the upper surface of the thin-film, and rotating with the rotational axis via a fourth rotational element; a fifth roller disposed between the first and third rollers, making contact with the upper surface or the lower surface of the thin-film, and rotating with the rotational axis via a fifth rotational element; a second load sensing element sensing a load of the third roller or the fourth roller; and a tension sensing element sensing a tension of the thin-film on the fifth roller, wherein the control part synchronizes a translational velocity of the third rotational element or the fourth rotational element based on the load sensed by the second load sensing element, and synchronizes rotational angular velocities of at least one of the first and fourth rotational elements by the tension sensing element.