Description: TECHNICAL FIELD The present invention relates, to a reversibly thermochromic aqueous ink composition. More specifically, the present invention relates to a reversibly thermochromic aqueous ink composition having excellent storage stability and color development of ink. The present invention also ...
In the simplest case of a hologram resulting from the superposition of two planar waves, the DE is the ratio of the intensity of the light diffracted on reconstruction to the sum total of the intensities of incident reference light and diffracted light. The higher the DE, the greater the eff...
in which the display layer sandwiched between opposed electrodes; a contact section which electrically contacts the electrodes of the record display medium; and a writing section which writes an image into the display layer of the record display medium, the electrodes of which are contacted by the...