Paper shear for printer

Details Paper shear for printer Paper shear for printer

1990-03-12

1991-11-19

Burr, Edgar S.

Typewriting machines

Sheet or web

For feeding web record-medium

83483, 83583, 101226, B41J 1170

Patent

active

050661531

ABSTRACT:
A paper shear includes a flat disk with unsharpened edges pivotally mounted on an assembly carried by the printer carriage. The paper shear is pivoted between paper shearing engaged and disengaged positions relative to a shear platen. The mounting assembly includes a linear actuator and a mounting plate cooperable to pivot the paper shear into the engaged position at an extreme end of carriage travel and maintain it in the engaged position upon movement of the carriage in the opposite direction to shear the paper. The actuator and plate are then relatively displaced at the opposite extreme end of travel to pivot the paper shear into its disengaged position, whereby printing can be resumed.

REFERENCES:
patent: 3566725 (1971-03-01), Sutyak
patent: 3593659 (1971-07-01), Brackett
patent: 3958477 (1976-05-01), Carlson
patent: 3981215 (1976-09-01), Granger et al.
patent: 4152962 (1979-05-01), Hendrischk
patent: 4504162 (1985-03-01), Speraggi
patent: 4525088 (1985-06-01), Shipos et al.
patent: 4701063 (1987-10-01), Wysk et al.

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