Spreader roller system having adjustable roller gap
AssigneePolaroid Corporation
InventorsVaito K. Eloranta, John W. Ford, Jr.
Life of this patent
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Abstract
There is disclosed an assembly usable in a photographic apparatus for adjustably presetting the gap spacing of a pair of juxtaposed rollers used for spreading film processing fluid between a pair of sheets traveling therebetween. The presetting assembly includes a movable gap setting member having a plurality of surface portions formed thereon, each of which facilitates formation of a different gap which, in turn, facilitates a different processing fluid layer thickness. The member is movable in a manner which allows different ones of the surface portions to operatively cooperate with the rollers so as to establish correspondingly different gap spacings.
Claims7
In a photographic apparatus having means for spreading processing fluid in a layer of predetermined thickness between a pair of superposed film sheets as the sheets travel therethrough, the spreading means including a pair of pressure members mounted in juxtaposed relationship with at least one of said members being movable with respect to the other, means for yieldably biasing said members toward each other, and means for spacing apart said members to define a gap therebetween and thereby establish the thickness of the spread layer of fluid, the improvement wherein said spacing means includes an adjustable gap setting assembly having a plurality of preset positions each of which define different predetermined spacings between said members such that any one of said spacings may be selected in accordance with the selected position of said assembly to define selected thicknesses of the fluid layer and accommodate different predetermined film sheets.
Dependencies are inferred from the claim text.