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Multiplexed planar printings, made of single or few layer micro and nanooptical platforms, are essential for high capacity display, information storageand encryption. Although having been developed rapidly, the demonstratedchannels are still limited and also lack instantaneity. Here, holograms andprintings, always regarded as two independent information coding domains withtotally different principles, are combined together through our proposed anglemultiplexing framework, leading to multiplexed printings with hundreds ofchannels. Based on such approach, we experimentally encode respectively 25 grayscale printings into 25 angles and even 8 gray scale videos into 8 angles witha phase-only spatial light modulator. As a bridge between printings andholograms, our method allows to generate printings combining variousholographic methods. Beneficial from this, we demonstrate a gradientmetasurface based 324 channel printing which multiplexes angles, polarizationsand wavelengths simultaneously. Our work paves the way to flexiblyangle-dependent printing display and massively multiplexed encryption systems.

Phase-Only Holographic Assisted Planar Printing for Massively Multiplexed Optical Display and Encryption