engleski

Optical features of old books paper

Three volumes of a book in possession of the National and University library in Zagreb (RIIF-4- 358- sv.1, RIIF-4- 358- sv.2, RIIF-4- 358- sv.3) were preliminary observed by image analysis and by spectrophotometric method. Regarding the optical features of these old books paper, these books were analyzed through watermarks characteristics and reflectance spectra. Obtained reflectance spectra for title page and random page of first volume show the highest values compared to second and third volumes, but these differences are insignificant. From the measurements results of all printed map paper reflectance spectra, we can conclude that printed map paper of third volume has been made from different type of paper. The image analysis results pointed out that watermarks characteristics of third volume are significantly different to the first and second volumes.

Optical features, reflectance values, old book papers, watermark, paper production grid

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