DEP (Direct Exposure Probe) is a technique in which a sample is directly applied to a platinum filament at the tip of the probe and rapidly heated by applying an electric current to the filament. This method enables rapid ionization while minimizing thermal decomposition of the sample, thus requiring little to no complex sample pretreatment and making it suitable for the analysis of nonvolatile substances or those prone to thermal decomposition. In this study, therefore, a direct introduction method using DEP was applied, and the results of rapid qualitative analysis of organic pigments contained in the pigmented layer of an indoor line tape are reported.