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Puzzle-cut-seamed-belt-with-strength-enhancing-strip

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Puzzle cut seamed belt with strength enhancing strip

Details

Inventors: Parker, Thomas C.; Schlueter, Jr., Edward L.; Lynd, Laurence J.; Sharf, Lucille M.;
Assignee: Xerox Corporation (Stamford, CT)
Primary Examiner: Choi; Kathleen
Assistant Examiner:
Attorney, Agent or Firm: Mott; Samuel E., Soong; Zosan S., Bade; Annette L.

An endless flexible seamed belt formed by joining two ends of material from which the belt is fabricated each end of which has a plurality of mutually mating elements in a puzzle cut pattern which are in interlocking relationship to prevent separation of the ends and which form a seam when joined mechanically to enable the flexible belt to essentially function as an endless belt having a substantially uniform thickness, said seam having voids between mutually mating elements at least partially filled with a seam strength enhancing material which is chemically and physically compatible with the material from which the belt is fabricated and which substance applied as a strip or on a strip over the seam and is bound to said belt material, said bond having been formed by the application of heat and/or pressure to a strip of said compatible placed material on at least one side of the seam at least substantially covering the seam. The strip may include a substrate with a coating of the compatible material which is removed after the bond is formed.

DETAILED DESCRIPTION Accordingly, it is a principle object of the present invention to provide a seamed belt with mechanically invisible seams substantially equivalent in performance to that of a seamless belt.
It is a further object of the present invention to provide an endless seamed belt where there is substantially no bump or height differential between the, seamed portions and unseamed portions on each side of the seam, leading to performance failure, or degradation of cleaning blade performance, image registration, belt tracking or motion quality from translating vibrations.
According to a principle aspect of the present invention the above objects are obtained by providing a flexible seamed belt formed by joining two ends of the belt material having a plurality of mutually mating elements in a puzzle cut pattern of nodes which are in an interlocking relationship plane to prevent separation of the ends and which form a seam when joined mechanically enable the seamed flexible belt to essentially function as an endless belt having a substantially uniform thickness.
And, wherein the seam has a kerf or voids between mutually mating elements at least partially filled with a seam strength enhancing material which is chemically and physically compatible with the material from which the belt is fabricated and which is bound to the belt material, the reinforcing bond having been formed by the application of heat and/or pressure to a strip of the compatible material or a substrate having a coating of the compatible material placed on at least one side of the seam and substantially covering the seam.
After the bond is formed the substrate may be removed.
In a further aspect of the present invention a strip of the compatible material is present on both sides of the seam and the strength enhancing material maybe the same or a different material from that which the belt is fabricated.
In a further aspect of the present invention the belt material is softened by the application of heat and the strip of compatible material is melted by the application of heat and is present in sufficient quantity to fill the voids between mutually mating elements

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