Pigments used in lacquerware pieces excavated from the Edo-period stratum at the southern part of Kawauchi campus of Tohoku University are analyzed using an in-air submilli-PIXE camera. That area is located at the former secondary citadel area of Sendai's Aoba Castle. The lacquerware pieces were analyzed as elemental images without sample degradation and without sample preparation. Pigments used in the red lacquer resin were cinnabar and Bengala. This analytical method, which uses images, was effective for discrimination of contaminant elements through comparison with the decoration. Results show that PIXE analysis using the in-air submilli-PIXE camera is an effective tool for use in archeological studies.