Light reflecting casing
AssigneeOce-van der Grinten N.V.
InventorsPetrus T. J. Geurts, Albert J. Wittenberg
Life of this patent
Estimating the term…
Abstract
A light reflecting casing especially suitable for use in photocopiers is provided by means of a resilient foil, e.g. of stainless steel or of a metallized flexible plastic material, which is held elastically curved with a reflecting side thereof directed toward the light and is shaped exactly to the form of a developable ruled surface by a plurality of support members engaging its other side.
Claims14
A reflecting casing comprising a resilient foil having a surface for reflecting light from one side of said foil, means including a plurality of support members having aligned curved surfaces for engaging the other side of said foil and shaping said foil to the form of a developable ruled surface, and means for holding said foil curved elastically into engagement with said curved surfaces, yet keeping the curved foil movable in its own plane, said holding means engaging edge portions only of said foil.
A reflecting casing comprising a resilient foil having a surface for reflecting light from one side of said foil, a plurality of support members for engaging the other side of said foil and shaping said foil to the form of a developable ruled surface, said support members being plates about 1 to 10 mm. thick being regularly spaced over said other side by a distance of about 2 to 6 cm. and each extending perpendicularly in contact with said foil entirely, or nearly so, from one to the other of its uncurved edges, a supporting structure including oppositely disposed casing side walls and members interconnecting said side walls, said side walls having curved edges respectively engaging said one side of said foil near its curved edges for holding said foil in a curved posture for engagement by said support members yet keeping the curved foil movable in its own plane, means hinging said support members to said supporting structure at one of their ends and means detachably attaching said support members to said structure at their other end.
A reflecting casing comprising a resilient foil having a surface for reflecting light from one side of said foil, a plurality of support members having aligned curved surfaces for engaging the other side of said foil and shaping said foil to the form of a developable ruled surface, said support members being regularly spaced apart over said other side and each extending perpendicularly in contact with said foil entirely, or nearly so, from one to the other of the uncurved edges of said foil, and a supporting structure including oppositely disposed casing side walls and members interconnecting said side walls, said side walls having curved edges respectively engaging said one side of said foil near its curved edges for holding said foil in a curved posture for engagement by said curved surfaces yet keeping the curved foil movable in its own plane.
Dependencies are inferred from the claim text.