We have conducted an evaluation of the characteristics of inkjet printers that have lately attracted considerable attention as an output device of DDCP (Direct Digital Color Proofing). We confirmed that inkjet printers have a color gamut that covers almost all colors possible with a press, high repeatability, and uniformity. In particular, it was found that inkjet printers with pigment inks are more suitable for DDCP because of their high stabilities over time.In general, however, there are many cases where the color matching accuracy is inadequate when using a commercial profiling tool for default settings. Although it is likely that different factors affect this issue, we concentrated on the accuracy of the BtoA1 table in a printer profile, the closeness to press in spectral characteristics, and the effect of fluorescent brighteners contained in papers. We have examined the issues related to these factors and found a method to achieve enough color matching accuracy for practical use.