| 摘要 |
PROBLEM TO BE SOLVED: To solve a conventional problem in a scratch card, etc. having only a scratch hiding layer as means to conceal secret information, allowing a person conducting an illegal action to easily forge a fake or to peep, and also a conventional problem in a scratch card, etc. having a hologram layer on a top layer developed to prevent such a fake, whose hologram layer can be recognized by a third person, allowing a person conducting an illegal action to easily forge a scratch card, etc. having a similar optical effect.SOLUTION: In a scratch card, etc., a hologram layer is hidden by a scratch hiding layer so that not only "secret information" but also the appearance of a hologram reproduction image can be concealed. Accordingly, the scratch card, etc. can have a high forgery prevention effect, as the secret information and the hologram reproduction image can be recognized only by scratching or removing the scratch hiding layer. |
