| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a writing sheet, which can use in a clean room having a high air cleanliness class, which requires no writing utensil with ink such as a ball-point pen, a felt tip pen or the like, which itself develops no dust and, in addition, to which countermeasures against static electricity are worked out so as to extremely little electricize the writing sheet by a writing action. <P>SOLUTION: By pinching both the front and rear sides of a coloring layer composed by laminating a color developing agent 3 writable with writing pressure and stamping pressure and a developer 4 at the middle of the coloring layer with antistatic transparent synthetic resin films 1 each with a hot-melt transparent curing type pasting agent 2 coated on one side from both its sides so as to thoroughly seal the whole surface of the coloring layer including the peripheral edge part formed through the thermal fusion of the pasting agent, the development of dusts is eliminated and an extreme anti-electricization can be realized in the writing sheet. <P>COPYRIGHT: (C)2007,JPO&INPIT |
