| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a writing sheet set capable of taking notes on an erased area again after quickly erasing a desired area without soiling a periphery when correcting a scribal error, and being excellent in convenience and reusability capable of easily and surely erasing a wide range. <P>SOLUTION: The sheet set is comprised of writing utensils storing ink capable of decoloring by heating and writing sheets taken note by the writing utensil, and has an explanation part showing the writing sheets heats hand writings formed by the writing utensils. The explanation part of the writing sheets is formed by a heat-discoloring ink. The writing sheet has an image formed with a non-discoloring ink. <P>COPYRIGHT: (C)2008,JPO&INPIT |
