| 摘要 |
PURPOSE:To obtain a key cap with a reverse pattern of a character, a symbol or the like with a large dyeing depth, by a method wherein a key cap provided with a reverse pattern of a character, a symbol or the like by a dip thermal dyeing method is subjected to a dry heat treatment at a temperature at which dyeing can be performed. CONSTITUTION:When the key cap 1 provided with a reverse pattern of a character, a symbol or the like by a dip thermal dyeing method is subjected to a dry heat treatment at a temperature at which dyeing can be performed, the molecular motion in the resin at the surface of the base material of the key cap becomes vigorous, resulting in an enlargement of the spacing between molecules, and molecules of a thermally transferable dye 2 deposited in a surface layer part 3 are diffused into an inner layer part 4. |
