Importance

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Abstract

A microfilm cartridge assembly is effective for increased transfer speed of film and for reduced noise levels during winding. The microfilm cartridge assembly includes a housing having front and rear spaced walls, a centrally located post extending inwardly into the housing from the rear wall, and a cylindrical retaining wall disposed between the front and rear walls. The microfilm cartridge assembly further includes a reel having a hub centered about an axis of rotation of the reel. The reel is received within the housing with the hub received on the housing post for rotation thereon. The hub of the reel has a depth which is slightly less than the maximum height of the post such that the reel is suspended above the rear wall of the housing when the hub is received on the post. The post is preferably tapered upwardly to a point at its central axis to define a single point of contact with the hub. More specifically, the post is formed with a convex upper surface wherein the apex of the concave surface defines the single point of contact.

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First Claim