Microfilm retrieval device

Details Microfilm retrieval device Microfilm retrieval device

1988-08-09

1990-03-20

Haroian, Harry N.

Optics: image projectors

Selective data retrieval

Film strip

G03B 2312

Patent

active

049096222

ABSTRACT:
A microfilm retrieval includes first and second motors for respectively conveying at a high speed a winding section and rewinding section. The winding section and rewinding section are provided with a pair of nip rollers therebetween so as to hold the microfilm. A rotary shaft is axially mounted to the nip rollers and is connected to a low speed motor via an electromagnetic clutch in order to convey the microfilm in both directions at a low speed. First through fourth controllers are respectively provided for controlling the first and second motors, the electromagnetic clutch, and low speed motor. Additionally, a fifth controller is provided for driving the first and second controllers, and a detector is provided for detecting image frames on the microfilm.

REFERENCES:
patent: 3141626 (1964-07-01), Koskin
patent: 3203636 (1965-08-01), Owen
patent: 4028552 (1977-06-01), Volk
patent: 4043652 (1977-08-01), Mickelson
patent: 4456201 (1984-06-01), Frias

Affiliated with

Also associated with

Rating

Microfilm retrieval device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Microfilm retrieval device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microfilm retrieval device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-788666