The digital print industry is working toward the goal of adopting improved test methods for image permanence. This study focused on the impact of ozone concentration on the performance of inkjet print samples. Results from accelerated tests were compared to data collected from identical sample sets exposed to ambient air and to filtered air. Reciprocity failure was observed for some samples in the test, but the results also verified earlier work in which ambient air exposure can be generally linked to accelerated ozone test results. This research is part of ongoing work contributing to the development of standardized test methods for image permanence.