| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the problem that since sterilization by ultraviolet is dependent on strength of the ultraviolet, ultraviolet always needs to maintain strength of at least to some extent, however, as for an ultraviolet lamp, the ultraviolet strength falls off with time, when it becomes at most to some extent, if the lamp is not changed, predetermined sterilization effect is not acquired, and this replacement timing is not determined by the appearance. <P>SOLUTION: The time passage display film is used sticking it on a place which receives ultraviolet from an ultraviolet lamp, and comprises laminating: an instruction display printing layer made by a transparency coating material containing an ultraviolet absorber; and a printing layer made by a coating material which fades by ultraviolet to a transparent base film. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
