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Reel Microfilm to Diazo Aperture Card Copier Disclosure Number: IPCOM000094739D
Original Publication Date: 1965-May-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 3 page(s) / 64K

Publishing Venue


Related People

Mueller, F: AUTHOR


This reel microfilm to diazo aperture card copier has a ten times or larger rotatable image viewer.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
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Reel Microfilm to Diazo Aperture Card Copier

This reel microfilm to diazo aperture card copier has a ten times or larger rotatable image viewer.

The copier displays a selected frame of film on a screen. Data relating to that frame can be key transcribed onto an aperture card and verified. An electrical interlock is actuated as the card is ejected from the verifier. This prevents any further movement of the microfilm until after the card is transported from the verifier, inserted into the copier, and exposure in the copier is completed. This achieves absolute control of sequential integrity in the photographic image transfer to the aperture card.

The cabinet structure of the copier is shown in drawing 1. The structure includes upper cabinet 10 and base cabinet 11. Cabinet 10 includes three mirrors 12, 13 and 14 and translucent viewing screen 15. The mirrors deflect light from a projection lens system 16 so that it projects an image onto the rear of screen 15. A reel of microfilm is mounted within cabinet 10 and can be moved by controls on control board 17 until the appropriate image is pictured on screen 15. An unexposed aperture card is then inserted into the cabinet from the right-hand side and a button is pressed. The copier then exposes the card to the selected image and develops the card. This is then ejected from the left-hand side of the copier. Cabinet 11 contains pneumatic pumping apparatus, an ammonia supply and all necessary valving.

Control board 17 is primarily for manual testing. In another arrangement, all functions except reel film movement are controlled automatically. As the card is inserted into the copier, a lever is closed. Cycle and switch functions are started by timed cam contacts on a timing shaft. Film movement remains controlled with a manual joy stick.

Drawings 2, 3 and 4 show the operating mechanism of the copier. Drawing 2 is a top view of microfilm 20 and reel spindles 21 and 22 upon which the microfilm is wound. The reels are mounted upon supporting yoke 23, as is a plurality of rollers 24. The microfilm is threaded around rollers 24 and guides 25, as shown. AN In drawing 3, a right side view of film strip 20, reel 22 and yoke 23 is shown. Motor 30 continuously drives belt 31 by pulley 32. Belt 31, in turn, drives pulley 33 which is associated with reel 22 and a second pulley, not shown, associated with reel 21. Each reel is connected to a magnetic clutch 34 which is held in position by yoke 35. A keyed shaft arrangement 36 imparts the motion from clutch 34 to reel 22. A similar arrangement is provided for ree...