Mastering Digital Photography Pocket Guide 2nd Edition

Page 59

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3H4 >A ?86<4=C 8=:. As we explained in Chapter 8, buying a printer locks you into a particular type of ink so it’s important to understand the features and beneďŹ ts of each ink type. Dye inks are cheaper to manufacture and, being liquid, can be forced through ďŹ ner nozzles than pigment inks so they should be capable of reproducing ďŹ ner detail than pigment-based printers. (Although whether you would actually notice much dierence is debatable.) Pigment inks contain millions of tiny solid particles of coloured pigment suspended in a liquid carrier medium. In the early days, ink formulators had a limited range of colours to choose from but recent developments have almost eliminated the dierences in colour gamut (the range of colours that can be produced) between the two ink types. Dye and pigment inks behave dierently when placed on printing paper. Dye inks are designed to soak into the surface of the paper. If the surface of the paper is too absorbent, the droplets of dye may spread, causing a loss of precision in edges. However, because the inks are absorbed, prints made with dye inks are usually scratch-resistant. Pigment inks remain on the surface of the paper, where they are vulnerable to physical

abrasion and scuďŹƒng. Some papers have porous surfaces that provide a degree of protection for the pigment particles. In a few printers, the pigment particles are resin coated and the printer applies a layer of resin (‘gloss overcoat’) over the surface of prints on glossy papers to provide a scu-resistant surface. The table below shows the strengths and weaknesses of dye and pigment inks. Use it to help you to decide which type of printer to purchase. &EATUREĂŚ ,IGHTFASTNESSĂŚ /ZONEĂŚRESISTANCEĂŚ !PPEARANCEĂŚONĂŚGLOSSYĂŚPAPERĂŚ !PPEARANCEĂŚONĂŚMATTEĂŚPAPERĂŚ 2ESISTANCEĂŚTOĂŚBRONZINGĂŚ 3CRATCHĂŚRESISTANCEĂŚ #OLOURĂŚGAMUTĂŚ 0ERFORMANCEĂŚONĂŚ@lNEĂŚART ĂŚPAPERSĂŚ

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For prints that will be framed behind glass, it doesn’t really ma er which type of ink/paper combination you choose because the glass will largely eliminate the dierences between the two ink types. However, prints made with pigment inks will have greater lightfastness as a rule.


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