Summary
An analysis on the compressible nature of paper shows that under high pressures the pore size is linearly related to the square root of pressure. An expression for the penetration of ink into paper as a function of pressure is derived and agrees satisfactorily with experimental results. It is also shown that the mean hydraulic radius of the pores of a paper can be calculated directly from the fall in the diffuse reflectance of paper caused by the penetration of black ink under pressure.
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An erratum to this article is available at http://dx.doi.org/10.1007/BF00411941.
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Hsu, B. The influence of paper compressibility on ink penetration. Appl. sci. Res. 10, 277 (1961). https://doi.org/10.1007/BF00411920
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DOI: https://doi.org/10.1007/BF00411920