Coffee can be used to dye paper and fabrics. If you put the beans in hot water their color will start to come out.

咖啡能用于给纸和布染色，如果你吧咖啡豆放进水中，那么它的颜色很快就会浸泡出来。

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BPA is used to coat thermal paper, which reacts with dye to form black print on receipts handled by millions of Americans every day.

BPA被用在热敏纸的表面涂层中，这种热敏纸和染料发生反应从而显示黑色字迹的收据每天在数以百万的美国人手中传递着。

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Use them as a natural dye for your hair, paper, fabric and wood.

咖啡渣还是天然染色剂，可以用于头发，纸张，纺织品和木制品染色。

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Dye sublimation is a printing technology that uses layers of transparent color dye, special dye-receptive paper and a heated printing head to create images that are pretty close in quality to conventional photographic film and paper--up to 16.7 million colors and 403 dots per inch by 403 dots per inch.

FORBES: Ten O'Clock Tech: Point, Shoot, Print

Dye, ink and paper tend to be more expensive for this method of printing than with normal color printers.

FORBES: Ten O'Clock Tech: Point, Shoot, Print

The machine prints images at a size of 4 inches by 6 inches or 3.5 inches by 4 inches on paper that uses dye sublimation technology.

FORBES: Ten O'Clock Tech: Point, Shoot, Print