Apparatus for creating back tension in a printer/plotter system

Details Apparatus for creating back tension in a printer/plotter system Apparatus for creating back tension in a printer/plotter system

1996-04-29

1998-01-20

Burr, Edgar S.

Bearings

Rotary bearing

Plain bearing

400613, 2424218, 242422, 2425983, 384434, F16C 2702

Patent

active

057094810

ABSTRACT:
A roll-feed apparatus which is removably attached to a printer/plotter that has a self-alignment feature. Media, such as paper, vellum or film is pulled through the printer/plotter. However, a back-tension is created in the roll-feed apparatus by creating a pre-determined force on the shaft to which a roll of media is mounted. By increasing the force on the shaft, frictional drag is induced impeding the shaft's rotation. It has been found that the rotational impedance, in conjunction with the pull of the printer/plotter, corrects any misalignment of the media in approximately six meters of media run.

REFERENCES:
patent: 3127125 (1964-03-01), Jilbert
patent: 3333905 (1967-08-01), Hennequin
patent: 3913854 (1975-10-01), McClure
patent: 4251121 (1981-02-01), Johne et al.
patent: 4467509 (1984-08-01), Dezen
patent: 4877813 (1989-10-01), Jinno et al.
patent: 4915319 (1990-04-01), Gerber
patent: 5559180 (1996-09-01), Takahashi et al.

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