发明名称 |
Method and apparatus for producing roll photo film |
摘要 |
A roll photo film includes a spool which has a cylindrical core. A light-shielding sheet has a front end portion and a rear end portion. The front end portion is secured to the core. A first end of a photo filmstrip is secured to one securing position on the light-shielding sheet. The photo filmstrip is wound about the core in a roll form with the light-shielding sheet. A roll photo film producing apparatus includes a punch/die set, which has a trimming punch and a trimming die, and trims the rear end portion with a reduced width. A hole-forming punch and a hole-forming die are incorporated in the punch/die set, and cut a retaining hole through the rear end portion simultaneously with trimming of the rear end portion.
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申请公布号 |
US6079654(A) |
申请公布日期 |
2000.06.27 |
申请号 |
US19970923415 |
申请日期 |
1997.09.04 |
申请人 |
FUJI PHOTO FILM CO., LTD |
发明人 |
SASOU, MASAMI;MAKINO, TERUYOSHI |
分类号 |
G03B17/26;G03C3/02;(IPC1-7):G03B23/02;G11B23/107 |
主分类号 |
G03B17/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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