Patent ID: 6953345

Claim:
A reversible water-metachromatic hand writing toy cloth sheet which comprises a cloth and a water-impermeable sheet on a back of said cloth, said cloth bearing on a front thereof a porous layer comprising a binder resin having fine-particle silicic acid fixed in a dispersed state therein, said water-metachromatic cloth sheet exhibiting different transparency between a water-absorbed state and a water-unabsorbed state, wherein said cloth has a weight per unit area of 30 g/m 2 to 1,000 g/m 2 , the amount of said fine-particle silicic acid in said porous layer is 1 g/m 2 to 30 g/m 2 , and the amount of said fine-particle silicic acid per 1 part by weight of the binder is 0.5 to 2 parts by weight.