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| Can two shades of gray ink make photos more vibrant? Oddly enough, yes! |
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| HP’s 8-ink printing technology adds two neutral shades of gray—adding rich colour and lifelike texture to your colour snapshots and making it easier to create black-and-white photos that are truly works of art. |
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| Gray area |
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| Gray inks, in combination with the black ink, make your black-and-white photos pop off the page with deep, velvety blacks, bright whites, and the 4,097 shades of gray in between. |
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Most other printers use a combination of colours to make gray. Their black-and-white photos often have an odd purple or green tint; HP's gray inks are colour-neutral—no tints here. |
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There's a substantial decrease in graininess. Your pictures look more realistic, with smashing contrast between blacks and whites. |
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HP also designed the inks to blend and mix together before they're absorbed into the paper, virtually eliminating graininess and the appearance of dots. |
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| colour consistency |
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| Different types of light can make your black-and-white photo appear to have slightly "off" colours. That is, unless you printed with HP's 8-ink printing system. |
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Look at a print under a normal bulb, then under a fluorescent. The fluorescent probably has a sickly green hue—not too pretty if it's a portrait of Mom. |
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Scientists call this colour shift "metamerism." |
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HP chemists designed the gray inks in the 8-ink systems to remain colour-neutral when using HP photo papers, regardless of the type of light. |
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