The evolution of cyan couplers for color paper and color negative is introduced, including the peculiar characteristics of the different couplers, reaction mecha. nism and application condition.

介绍了彩色相纸及负片用青成色剂的演变，包括各种类型青成色剂的优缺点、现行负片中青成色剂的作用机理、应用条件。

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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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The method was illustrated by experiment on plain laser paper to combine relative contrast and color contrast to obtain optimum solid density of printing.

以素面镭射纸为例，通过实验，阐述了结合相对反差和色彩反差来确定印刷最佳实地密度的方法。

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He's seeking to obtain the assets of bankrupt Oriental Photo Industrial, Japan's first photo paper and color-film maker.

FORBES: "Everyone said I would fail"

Kodak's largest plant in the U.K. is in Harrow, near London, and manufactures color photographic paper and used to make film products, a person close to the company said.

WSJ: Kodak Transfers Business to U.K. Retirees to Erase Pension Obligation

The three letters all contained "the same verbiage, font, style and paper color, " it says.

CNN: FBI confirms letters to Obama, others contained ricin