Cutting – Operation controlled by detector means responsive to work – Actuation of tool controlled in response to work-sensing means
Patent
1980-02-04
1981-05-05
Yost, Frank T.
Cutting
Operation controlled by detector means responsive to work
Actuation of tool controlled in response to work-sensing means
83156, 83205, 83210, B26D 538
Patent
active
042651530
ABSTRACT:
Apparatus and control circuitry used in a copy machine for providing copy paper cut to length in accordance with an original sheet sensed by a single switch in the path of travel of the original. A first feed roller is rotated via a clutch upon energization of a solenoid for the clutch when the leading edge of the original is sensed by the switch to connect the solenoid to a D.C. power supply via a capacitor. When the capacitor is nearly charged, current flow to the solenoid has diminished to a level where the armature of the solenoid is returned to its unactuated position. The leading edge of the copy paper is moved from a solenoid operated cutter to a second feed roller by the rotation provided by the first feed roll in response to the energization of the solenoid for the clutch. The second feed roller continues to pull copy paper from a supply roll until the trailing edge of the original moves past the switch causing the switch to connect the charged capacitor to the cutter solenoid to energize it and operate the cutter.
REFERENCES:
patent: 3533691 (1970-10-01), Suzuki et al.
patent: 3572203 (1971-03-01), Woodham et al.
patent: 3645157 (1972-02-01), DiGiulio et al.
patent: 4193330 (1980-03-01), Knox
Alexander Cruzan
Marben Robert L.
Minnesota Mining and Manufacturing Company
Sell Donald M.
Yost Frank T.
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