Oblon, McClelland, Maier & Neustadt, L.L.P.
Recording medium and manufacturing method of recording medium
A recording medium has a substrate and a first color developing layer, a heat insulating layer and a second color developing layer laminated on the substrate in this order. The first color developing layer develops a first color at a temperature not less than a first threshold value. The second color developing layer develops a second color that is different from the first color at a temperature not less than a second threshold value that is higher than the first threshold value. The heat insulating layer has a first heat insulating layer of a first heat conductivity and a second heat insulating layer of a second heat conductivity that is higher than the first heat conductivity, which are laminated in a second direction orthogonal to a first direction in which the first color developing layer, the heat insulating layer, and the second color developing layer are laminated on the substrate.
Kabushiki Kaisha Toshiba
B B B B B B B
B41M B41M B41M B05D B41M B41M B41M
inventional inventional additional inventional additional additional inventional
Fumitoshi Nobuki Takahisa Satoru
Morimoto Nemoto Nakano Abe