| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the problems in which there is no ink to be erased with an eraser so far; the advent of a copy whose lines disappear is demanded; inking with a pencil over "an original picture" as a draft of an illustration, which is present only in one sheet, is a mental burden for a drawing person irrespective of a professional or an amateur; and the like. <P>SOLUTION: Although the copy is demanded to be developed, since the ink has now been invented, the pencil ink and the color pencil ink are used for copying machines and printing machines. It suffices if there is an installation place of an ink cartridge of the pencil ink in a copying machine or a printing machine. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
