Toppan Printing Co., Ltd.

Satoshi Tanaka

Hiroshi Matsuzawa

Shingo Akao

Osamu Koga

Fusao Takagi

Yusuke Onoda

A metal photoetching product comprising at least one large cavity of minor axis WS, major axis WL and depth Din a surface of the product, wherein one or more cavities are included inside at least one of the at least one large cavity, and a smallest hole among the cavities has minor axis of WS, major axis WL, and depth D; and the product satisfies the following dimensions, D+D=plate thickness D, 0.02 mm&#x2266;D&#x2266;2 mm, 0.4&#xd7;D&#x3c;WS&#x3c;D, and 0.2&#xd7;D&#x3c;WS&#x3c;0.8&#xd7;D.

Metal photoetching product and production method thereof

A metal photoetching product comprising at least one large cavity of minor axis WS, major axis WL and depth Din a surface of the product, wherein one or more cavities are included inside at least one of the at least one large cavity, and a smallest hole among the cavities has minor axis of WS, major axis WL, and depth D; and the product satisfies the following dimensions, DDplate thickness D, 0.02 mm&#x2266;D&#x2266;2 mm, 0.4&#xd7;D&#x3c;WS&#x3c;D, and 0.2&#xd7;D&#x3c;WS&#x3c;0.8&#xd7;D.

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Kuki, Japan

Satoshi Tanaka