We propose an effective combination of multiple functional inks,
including conductive silver ink, thermo-chromic ink, and regular
inkjet ink, for a novel paper-based interface called Inkantatory Paper
that can dynamically change the color of its printed pattern.
Constructed with off-the-shelf inkjet printing using silver conductive
ink, our system enables users to fabricate thin, flat, flexible, and
low-cost interactive paper. We would like to apply it for interactive
paper, body warmer, food heater and so on.