| 摘要 |
A technique for perforating paper-like music media for mechanical music devices such as player pianos, orchestrions, nickelodeons, band-organs, fairground organs, etc., is disclosed. Perforation is accomplished by modulating and directing a laser cutting beam over the surface of the paper-like music medium to perforate the medium. The laser perforator also slits the medium to width as it perforates, permitting the use of standard media widths.
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