Printing mechanism having one electromagnetic selector for two t

Details Printing mechanism having one electromagnetic selector for two t Printing mechanism having one electromagnetic selector for two t

1986-01-17

1987-11-17

Burr, Edgar S.

Printing

Selective or progressive

Bed and platen machines

101 99, 101110, 101 9311, B41J 148

Patent

active

047065621

ABSTRACT:
A printing mechanism comprising a rotary shaft, a first type ring mounted on the rotary shaft and provided on the circumference thereof with first typefaces, a first selection ratchet wheeljoined to the first type ring and provided on the circumference thereof with first teeth formed so as to correspond to the first typefaces, respectively, a second type ring mounted on the rotary shaft beside the first type ring and provided on the circumference thereof with second typefaces, a second selection ratchet wheel joined to the second type ring and provided on the circumference thereof with second teeth formed so as to correspond to the second typefaces, respectively, first and second pawls capable of being engaged with and disengaged from the first and second selection ratchet wheels, respectively, by means of an electromagnetic mechanism including a solenoid, a cylindrical yoke, a rotary member fixed to a rotary shaft and the first and second pawls, and clicks capable of transmitting the rotative force of the former rotary shaft to the first and second type rings, respectively. The first and said pawls are controlled by the solenoid so as to stop desired typefaces of the first and second type rings at the printing position.

REFERENCES:
patent: 2203024 (1940-06-01), Lewis et al.
patent: 3315860 (1967-04-01), Adams et al.
patent: 3848527 (1974-11-01), Nihira
patent: 3890894 (1975-06-01), Nihira
patent: 3916786 (1975-11-01), Clary
patent: 4142463 (1979-03-01), Matsui et al.
patent: 4508203 (1985-04-01), Packard et al.

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