  In this study, a method to construct a full-colour volumetric display is
presented using a commercially available inkjet printer. Photoreactive
luminescence materials are minutely and automatically printed as the volume
elements, and volumetric displays are constructed with high resolution using
easy-to-fabricate means that exploit inkjet printing technologies. The results
experimentally demonstrate the first prototype of an inkjet printing-based
volumetric display composed of multiple layers of transparent films that yield
a full-colour three-dimensional (3D) image. Moreover, we propose a design
algorithm with 3D structures that provide multiple different 2D full-colour
patterns when viewed from different directions and experimentally demonstrates
prototypes. It is considered that these types of 3D volumetric structures and
their fabrication methods based on widely deployed existing printing
technologies can be utilised as novel information display devices and systems,
including digital signage, media art, entertainment and security.
