Typewriting machines – Means auxiliary to typewriting function – Attachment for shielding or screening record-medium or...
Patent
1988-03-08
1989-06-20
Burr, Edgar S.
Typewriting machines
Means auxiliary to typewriting function
Attachment for shielding or screening record-medium or...
400247, 400320, B41J 1162
Patent
active
048405078
ABSTRACT:
A printer is provided with a band 44 attached to the printhead 54 to move to-and-fro across the line of printing, and around rollers (98,110) allowing it to pass beneath a printing support bed 12 so that introduced documents and documents being printed are restrained from excessive separation from the printing support bed 12. The band 44 is supported in association with the printhead 54 by non-return cylinders 58,64 capable only of uni-directional rotation. Each cylinder 58,64 is provided with a rotary spring 76 which takes up any excess length developing in the band 44. Spring loaded rollers 98,110 at either end of the printing path support the band 44. Electrical indication is provided when one, the other or both of the cylinders 58,64 cease to take up excess length and when one, the other or both of the spring loaded rollers 98,110 also cease to take up excess length in the band 44. Operation of the printer is inhibited when any selected one or group of electrical signals indicates exhaustion of tension in the band 44. A signal is provided triggered by intermittent operation of an electrical detector with movement of the head indicating imminent shut-down of the printer or exhaustion of tension.
REFERENCES:
patent: 1929449 (1933-10-01), Trego
patent: 2236011 (1941-04-01), Smith
patent: 2699244 (1955-01-01), Markes
patent: 2849096 (1958-08-01), Markes
patent: 4268182 (1981-05-01), Mizutani et al.
patent: 4468143 (1984-08-01), Volhe et al.
patent: 4479731 (1984-10-01), Kawaguchi
patent: 4650355 (1987-03-01), Cassiano et al.
patent: 4710047 (1987-12-01), Barough et al.
Burr Edgar S.
McDaniel James R.
Peterson Kevin R.
Starr Mark T.
Unisys Corporation
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