| 摘要 |
PURPOSE:To perform individual controlling of the condition in which a particle is caused to developing color or decoloring by forming different particles in sizes each comprising a dyestuff which is caused to color or to lose its color when supplied with current and an electrolyte medium which melts to obtain an enough electric conductivity to generate an oxidation reduction reaction in the dyestuff when heated. CONSTITUTION:Voltage is impressed to an electric heat sensitive head 3 from one pole of a power source 4 via a switch 5 and is heated by an electric heating device. The electric heat sensitive head 3 comes into abutment with the largest particle of each group of particles. An electrolyte medium of the particle is then caused to melt to obtain electric conductivity, whereupon the electric current flowing in the particle is controlled by operating the switch 5, whereby developing color or decoloring of the particle is controlled. Each particle is individually caused to developing color or decoloring thereof in order, and fused and permeates a substrate. |
