| 摘要 |
A stamper production method includes: a stamper forming step of producing, by electroplating processing using a matrix in which a pit string constituted of a concave pit is formed on an inorganic resist layer based on recording information, a stamper on which a convex pit corresponding to the concave pit is formed; and an etching step of carrying out etching processing on the stamper so that a reduction ratio of a pit height of a short pit becomes larger than that of a long pit regarding the convex pit of the stamper.
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