Patent Number: 6,167,207

Title: Film feed device capable of accurately aligning film by using one perforation sensor

Abstract: In a film feed device using a film having two perforations per frame, a perforation width and a perforation interval which are detected by one perforation sensor during a film feed operation are measured as times by timers in a microcomputer or as film moving amounts by a perforation detection circuit. When the time or the film moving amount measured as this perforation interval is less than the value obtained by multiplying the perforation width by a predetermined value, the film feed operation is stopped by a motor driving circuit and a motor. With this operation, even if the film position deviates from a predetermined position at the start of a film feed operation, the film can be accurately aligned with a correct position by using one perforation sensor.

Inventors: Miyazaki; Satoshi (Hoya, JP), Kawakami; Satoshi (Hachioji, JP)

Assignee: Olympus Optical Co., Ltd.

International Classification: G03B 17/42 (20060101); G03B 1/60 (20060101); G03B 1/00 (20060101); G03B 001/00 ()

Expiration Date: 12/26/2017