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Volume: 18 | Article ID: art00006_2
Photography via Photoacid Generation and Amplification
  DOI :  10.2352/ISSN.2169-4451.2002.18.1.art00006_2  Published OnlineJanuary 2002

Newly discovered principles of sensitized and super-sensitized photoacid generation from iodonium salts in polymeric films coupled with advances in acid amplification are combined with indicator dye technology and fixing mechanisms to provide a silverless photographic process. This new, single-sheet, negative-working medium is imaged with light and developed and fixed by heating, with no washing, waste, or additional chemicals. In trichrome films with good pre-exposure shelf-life, optical exposure to Dmax requires on the order of 10 mJ/cm2 in the red, 5 mJ/cm2 in the green, 1 mJ/cm2 in the blue, and 0.5 mJ/cm2 in the near- UV. This is too slow for image capture, but already sufficient for many analog and digital printing applications. The intrinsic resolution of the medium permits full-color pixels less than 10 microns in diameter, with continuously variable levels of gray for each pixel.

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John L. Marshall, Stephen J. Telfer, "Photography via Photoacid Generation and Amplificationin Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP18),  2002,  pp 445 - 449,

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