lightfast การใช้

• Cobalt violet is the only truly lightfast violet pigment with relatively strong color saturation.
• Materials that resist this effect are said to be "'lightfast " '.
• Most artificial food colorings are a type of acid dye, and can be used to lightfast.
• For screen printing, toxic commercial ink was replaced with common wallpaper paste and lightfast universal pigments used for tinting house paints.
• Alternatively, metal ( usually tin ) can be electrolytically deposited in the pores of the anodic coating to provide colors that are more lightfast.
• Though some may prefer lighter colors, in practice they may be difficult to produce on certain alloys such as high-silicon casting grades and lightfast.
• A color similar to cobalt ammonium phosphate, cobalt magnesium borate, was introduced in the later twentieth-century but was not deemed sufficiently lightfast for artistic use.
• Derwent Signature was a range of lightfast pencils, available in 60 colours ( Signature Watercolour pencils came in 40 colours ) but it was discontinued after a few years.
• Across the same period, industrial chemistry radically expanded the color range of lightfast synthetic pigments, allowing for substantially improved saturation in color mixtures of dyes, paints and inks.
• In recent years, high lightfastness has become an issue of increasing importance to artists, and Cretacolor has been one of the first manufacturers launching ranges of lightfast color pencils with its AquaStick and Marino lines.
• The printers also incorporate Tyvek which provides waterfast feature and lightfast of up to three months when used with the HP DesignJet CP Ink System UV . All HP's printing materials for the HP DesignJet CP series printers are available up to 54-inch wide.