The aim of this study was to examine the influence of temperature and relative humidity on the changes in typographic and colorimetric properties of ink jet prints in order to establish what typeface style is appropriate for business correspondence, where information permanence needs to be ensured. The prints were made with three ink jet printers from different manufacturers on four different office papers. Four different, widely used typefaces (one old-style, one transitional, and two sans-serif) in two different sizes (10 and 12 pt) were tested. The fastness of printed business correspondence under four different conditions of temperature and relative humidity were defined using Xenotest Alpha. The color differences were determined spectrophotometrically. The differences in typographic tonal density and wicking of typefaces were measured by image analysis. On average, the biggest difference in typographic tonal density was observed after a transitional typeface was exposed to the highest humidity and temperature values.