| 摘要 |
PROBLEM TO BE SOLVED: To provide a simple etching device for a small production which makes stirring sufficient and does not cause disorder of a print pattern and scattering of etchant. SOLUTION: The etching device comprises mounting a printed board displaced from a center of a principal axis and oscillating the printed board with cam, to prevent a bias of a printing pattern, scattering of etchant and the like.
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