Paper clamp device for a printer

Details Paper clamp device for a printer Paper clamp device for a printer

1982-06-22

1984-04-24

Crowder, Clifford D.

Typewriting machines

Including type-set-assemblage mounted on carrier and...

Including endless-band carrier for type-faces

400247, 400618, 400619, 400634, 101 9314, B41J 120

Patent

active

044445229

ABSTRACT:
A clamping device for a printer has a plurality of sideways-slippage preventing rollers housed in a roller housing which is fixed to a rear face of a wall of a ribbon shield. These preventing rollers prevent the printing paper from slipping sideways during a printing operation. A plurality of pressing plates are fixed on a hammer cover and biased towards the preventing roller by springs. A printing paper travels between the preventing rollers and the pressing plates, and the preventing rollers are oriented to rotate in the direction in which the printing paper travels. Since the preventing rollers prevent the printing paper from slipping sideways during printing, the printing lines are aligned properly. The preventing rollers also exert a minimum forward clamping force on the printing paper, which thus prevents the paper from tearing.

REFERENCES:
patent: 2633828 (1953-04-01), Adkins et al.
patent: 3586149 (1971-06-01), Miller
patent: 3707215 (1972-12-01), Familant
patent: 3732810 (1973-05-01), Skiba et al.
patent: 3915276 (1975-10-01), Metz
patent: 4072225 (1978-02-01), Manning et al.
patent: 4091912 (1978-05-01), Moss
patent: 4285604 (1981-08-01), Rex

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