US 12,077,009 B2
Reversible recording medium and exterior member
Aya Shuto, Tokyo (JP); and Yuriko Kaino, Tokyo (JP)
Assigned to Sony Corporation, Tokyo (JP)
Appl. No. 17/256,896
Filed by Sony Corporation, Tokyo (JP)
PCT Filed May 29, 2019, PCT No. PCT/JP2019/021297
§ 371(c)(1), (2) Date Dec. 29, 2020,
PCT Pub. No. WO2020/003868, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 2018-123919 (JP), filed on Jun. 29, 2018.
Prior Publication US 2021/0316563 A1, Oct. 14, 2021
Int. Cl. B41M 5/30 (2006.01); B41M 5/323 (2006.01); B41M 5/333 (2006.01); B41M 5/337 (2006.01); B41M 5/42 (2006.01); B41M 5/34 (2006.01)
CPC B41M 5/305 (2013.01) [B41M 5/323 (2013.01); B41M 5/3335 (2013.01); B41M 5/42 (2013.01); B41M 5/3372 (2013.01); B41M 5/3375 (2013.01); B41M 5/34 (2013.01); B41M 2205/04 (2013.01); B41M 2205/40 (2013.01); B41M 2205/42 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A reversible recording medium comprising:
a recording layer including a coloring compound having an electron-donating property, a color developing/quenching agent having an electron-accepting property, a photothermal conversion agent, and a macromolecular material;
an oxygen barrier layer on the recording layer, wherein the oxygen barrier layer includes silicon oxide, aluminum oxide or magnesium oxide; and
an ultraviolet absorbing layer provided on the recording layer,
the macromolecular material including an organic material that has solubility of 20 wt % or more and 80 wt % or less at 25° C. or less and includes 0.5 wt % of chlorine atoms in a molecule.