Original Publication Date: 1992-Dec-31
Included in the Prior Art Database: 2004-Apr-06
Xerox Disclosure Journal
Disclosed wing knife 10, shown in Figures 1 and 3, cuts articles such as cleaning blades in electronic xerographic printing machines. Wing knife 10 improves production yields of cleaning blades because of its smooth edges. Conventional cutting knife 3 shown in Figure 2 has sharp corners 4 and 5 that cause drag and induce scratches into the edges of materials being cut, such as cleaning blades. Wing knife 10, on the other hand, has a generally flat-shaped blade with two arc-shaped cutting edges 12 and 14. The arc-shaped design of the knife reduces drag and thus avoids scratching material while cutting. The end profile of wing knife 10 is comparable to an aircraft wing; it is a smooth flowing shape with no sharp corners. The exemplary cuts in Figures 2 and 3 show advantages wing knife 10 has over conventional knife 3. As wing knife 10 cuts material 15 in direction 16 as shown in Figure 3, less distortion 18 is created by the cut in comparison to distortion 7 created by conventional knife 3 cutting the same material in direction 9 as shown in Figure 2. In effect wing knife 10 cuts through material with greater ease than conventional knife 3 while reducing drag that causes scratches in the edges of material cut by the knife.