Characteristics of ORW e-paper with small azo dye exposure time

Time-limited exposure of electrode-free optically rewritable electronic paper is essential for applications, but performance characteristics can be modest. In this study, we investigate whether image writer mode can improve kinetics of the photosensitive layer order parameter, which is described by the rotational diffusion model. The model that we developed allows adjusting the transmittance spectra of polarizers. We have found that fairly uniform transmittance spectrum of polarizers enables to obtain competitive contrast ratio of 8:1 within 10 s of exposure. In comparison with long-time exposure, the reflectance coefficient is reduced by 24%. Computer-generated image is consistent with the experimental observations.