Kodak Microfiche-Positioning Mechanism

Kodak Microfiche-Positioning Mechanism


      One problem with conventional microfiche viewers in 1979 was the difficulty of precisely positioning the image on the screen, without the “stiction” that caused the fiche to stop early or overshoot. 



      Shown conceptually, the microfiche rests on a pair of longitudinal rubber rollers, which rest on a pair of lateral rollers on the top of the viewer.  The high friction of the rubber prevents slippage but allows the fiche to be freely positioned under the light.





      The entire mechanism is very compact and self contained because the rollers move only half as far as the microfiche, always staying within the dimensions of the microfiche.  

      The grooved guides keep the assembly together in a general sense, however the frame hovers around the rollers which are providing the frictionless movement.  


      Due to the almost-zero rolling friction, the fiche holder can be moved with the feeling of pushing a cork floating on water.  



The lamphouse hovers slightly above the moving fiche frame so that there is no friction drag.


      Developed by Steve Hines, and the subject of U.S. patent 4,374,611 which is assigned to Eastman Kodak.  This is not a product for sale, but is shown as an example of engineering by Steve Hines, which clients can expect on a consulting basis.  


Please contact Steve Hines at:


Glendale, California, USA
email:  Steve@HinesLab.com
phone:  818-507-5812