Method and device for slitting magnetic recording medium

Details Method and device for slitting magnetic recording medium Method and device for slitting magnetic recording medium

1997-03-14

1999-02-23

Peterson, Kenneth E.

Cutting

Rotatable disc tool pair or tool and carrier

Tool pair comprises rotatable tools

835083, 8369851, B23D 1906

Patent

active

058732934

ABSTRACT:
A method and device for slitting a magnetic recording medium which can maintain high cutting quality of the cutting edges of upper and lower rotary blades by adjusting the device slightly even if the cutting edges are worn to a certain degree and thus ensure the quality of the slit surface of the magnetic recording medium. When the lower rotary blade 2 and upper rotary blade 1 are slid and rotated with the respective side surfaces of the cutting edges thereof in contact with each other, and a long magnetic recording medium supplied between the upper and lower rotary blades is successively slit to thereby produce a plurality of magnetic recording mediums, an angle of intersection between the rotary shaft 14 of the upper rotary blade 1 and the rotary shaft 24 of the lower rotary blade 2 is adjusted according to the states of wear of the upper and lower rotary blades.

REFERENCES:
patent: 0391750 (1888-10-01), Koegel
patent: 391949 (1888-10-01), Cotrell
patent: 2554027 (1951-05-01), Haswell
patent: 2698661 (1955-01-01), MacGuarrie
patent: 3518913 (1970-07-01), Fountain, Jr.
patent: 4014234 (1977-03-01), Spengler
patent: 4590829 (1986-05-01), Davidson et al.
patent: 4676133 (1987-06-01), Fujimura
patent: 5373766 (1994-12-01), Ranly et al.

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