The present study considers a comprehensive comparative analysis of three prominent printing technologies: Dry Electrophotography (DEP), Liquid Electrophotography (LEP), and Piezoelectric Inkjet (PIJ) presses, focusing specifically on photo paper as the print medium. The investigation centres on the densitometric print quality attributes exhibited by each technology. Densitometry, as a quantitative measure of optical density, serves as a fundamental metric for assessing the precision and fidelity of printed images. Through a series of meticulously designed experiments and measurements, key densitometric parameters are evaluated, including but not limited to dot gain, colour accuracy, and overall image sharpness. The study aims to elucidate the strengths and limitations of each printing technology concerning these attributes, providing valuable insights into their performance on photo paper. The findings of this research contribute to a deeper understanding of the nuances in print quality across DEP, LEP, and PIJ technologies. Such insights are critical for industries and professionals seeking to optimize their printing processes, particularly when working with high-quality photopaper substrates. Ultimately, this research aids in informed decision-making for selecting the most suitable printing technology based on specific densitometric print-quality requirements in the context of photo paper applications.