Talk:Photographic paper

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Could Someone go into the differences of Resin Coated paper and Fiber paper? Quinwound 04:38, Mar 3, 2004 (UTC)

Contents 1 Photo paper for laser colour printers 2 Variable contrast papers 3 Sizes 4 Baryta Link

[edit] Photo paper for laser colour printers

Anyone know if photo paper meant for inkjets can be used for laser printers? Or will it ruin the printer, photo will smudge etc.?

[edit] Variable contrast papers

An anonymous user added a comment claiming that this paragraph was not true (I reverted it):

Photographic emulsions are also produced in a variable contrast type which permits the selection of any grade between 00 and 5. Variable contrast photographic paper is actually coated with a mixture of two types of emulsion, one of which is very low in contrast (0 or 00) and one of which is very high in contrast (5). The low contrast layer is activated by green light, the high contrast layer by blue light. The use of filters activates each layer in different proportions, thereby creating all contrast grades from 0 (or 00) to 5.

My understanding of using coloured filters with B&W film or paper was that the emulsion reacts differently to the different wavelengths of light. So red reacts fastest, producing a higher-contrast image than orange, yellow, green, or blue. Can someone provide a correct (or at least better) description? --Imroy 08:00, 4 January 2007 (UTC)

[edit] Sizes

What are the traditional photo sizes? Does it vary by country? —Preceding unsigned comment added by 202.160.118.227 (talk) 10:14, 19 January 2008 (UTC)

[edit] Baryta Link

The link to Baryta = barium hydroxide is incorrect. Baryta, as used in photographic paper, is barium sulphate - a VERY different compound...77.101.234.177 (talk) 14:51, 24 March 2008 (UTC)