US 11,667,142 B2
Reversible recording medium and exterior member
Nobukazu Hirai, Kanagawa (JP); Yuriko Kaino, Kanagawa (JP); and Kenji Takagi, Kanagawa (JP)
Assigned to Sony Corporation, Tokyo (JP)
Appl. No. 16/772,373
Filed by Sony Corporation, Tokyo (JP)
PCT Filed Dec. 20, 2018, PCT No. PCT/JP2018/046977
§ 371(c)(1), (2) Date Jun. 12, 2020,
PCT Pub. No. WO2019/124491, PCT Pub. Date Jun. 27, 2019.
Claims priority of application No. JP2017-243581 (JP), filed on Dec. 20, 2017.
Prior Publication US 2021/0078348 A1, Mar. 18, 2021
Int. Cl. B41M 5/42 (2006.01); B41M 5/34 (2006.01); B41M 5/30 (2006.01)
CPC B41M 5/42 (2013.01) [B41M 5/305 (2013.01); B41M 5/34 (2013.01); B41M 2205/04 (2013.01); B41M 2205/38 (2013.01); B41M 2205/42 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A reversible recording medium comprising:
a first recording layer to be colored in a first color;
a second recording layer to be colored in a second color, the second color being different from the first color; and
a first intermediate layer provided between the first recording layer and the second recording layer, the first intermediate layer including a plurality of layers respectively containing materials different from each other,
wherein
the plurality of layers of the first intermediate layer including a multilayer structure in which a first layer, a second layer, and a third layer are stacked in order,
the second layer having a lower heat conductivity than the first layer and the third layer, and
the second layer contains a foam material.