Paper surface modification by lasers

E. Zekou; D. G. Kotsifaki; A. A. Serafetinides

doi:10.1117/12.881909

17 January 2011 Paper surface modification by lasers

E. Zekou, D. G. Kotsifaki, A. A. Serafetinides

Proceedings Volume 7747, 16th International School on Quantum Electronics: Laser Physics and Applications; 774705 (2011) https://doi.org/10.1117/12.881909
Event: XVI International School on Quantum Electronics: Laser Physics and Applications, 2010, Nessebar, Bulgaria

Abstract

Lasers can provide a precious tool to conservation process due to their accuracy and the controlled energy they deliver, especially to fragile organic material such as paper. The current study concerns laser modification such as paper cleaning, initially of test papers artificially soiled and then of an original book of the early 20^th Century. The test objects were A4 copier paper, newspaper, and paper Whatman No.1056. During the experiments, ink of a pen, pencil and ink from a stamp was mechanically employed on each paper surface. Laser cleaning was applied using a Q-switched Nd:YAG operating at 532 nm and CO₂ laser at 10.6 μm for various fluences. The experimental results were presented by using optical microscopy. Eventually, laser cleaning of ink was performed to a book of 1934, by choosing the best conditions and parameters from cleaning the test samples, like Nd:YAG laser operating at 532 nm.

Citation Download Citation

E. Zekou, D. G. Kotsifaki, and A. A. Serafetinides "Paper surface modification by lasers", Proc. SPIE 7747, 16th International School on Quantum Electronics: Laser Physics and Applications, 774705 (17 January 2011); https://doi.org/10.1117/12.881909

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