发明名称 INFORMATION RETRIEVAL DEVICE
摘要 PURPOSE:To improve operability by detecting and storing an end mark added to the end part of a microfilm, and holding the storage contents and inhibiting a frame advance until a start mark is detected by rewinding the film. CONSTITUTION:Leader tapes 1a and 1b are connected to the start part and end part of a microfilm 1, and a start mark MS (used as a reset mark during rewinding) and an end mark ME are added there. When the end mark ME is detected by winding the microfilm 1 from a film reel, the detection of the end mark ME is stored in a storage device. The storage contents are held until resetting is done by rewinding the film 1 until the start mark MS is detected. A frame or subject advance is inhibited until the storage is released. Thus, operability is improved.
申请公布号 JPS5846469(A) 申请公布日期 1983.03.17
申请号 JP19810142491 申请日期 1981.09.11
申请人 RICOH KK 发明人 UMEDA ARATA
分类号 G03B21/11;G03G15/22;G06F17/30;G06K17/00 主分类号 G03B21/11
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