G - Physics – 03 – D
Patent
G - Physics
03
D
G03D 15/04 (2006.01) B26D 5/34 (2006.01)
Patent
CA 2070324
Disclosed is a method and apparatus for removing wastepaper (W) from a continuous web (2) of photographic paper upon which photographic images (P1, P2 . . . ) have been printed. Between each photograph there exists a cut mark (4) that instructs a photographic print cutter (1) where one photograph ends and an adjacent photograph begins. The method comprises advancing the web to a point where a cut mark is expected and sensing the presence or absence of a cut mark. If a cut mark is sensed, the web is advanced to align the cut mark under a cutting knife (8) and the cutting knife is cycled. If a cut mark is not sensed, the web is reversed a predetermined reverse length before the cutting knife is cycled. By reversing the web the predetermined reverse length, it is assured that any length of wastepaper cut from the web will at least be as long as the reverse length. The reverse length is long enough to prevent jamming of the print cutter.
Fetherstonhaugh & Co.
Gretag Systems Inc.
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