Friction feed media driver for a sign plotter

Details Friction feed media driver for a sign plotter Friction feed media driver for a sign plotter

1988-08-22

1990-06-12

Levy, Stuart S.

Advancing material of indeterminate length

Convertible

226 84, 226187, B65H 2000

Patent

active

049325779

ABSTRACT:
A friction feed media drive mechanism for a sign plotter includes a front idler roller and a back idler roller positioned under compression against a drive roller. The compression may be selectively applied by the user depending whether a friction feed or pin feed mode of operation is desired. Where the pin feed mode of operation is desired, the compression assembly is released and no compression is applied. The compression assembly includes a compression spring loaded member which fits through an opening in a housing and is selectively secured therein by a securing rod attached to a cam shaped knob. The front idler roller and back idler roller are both attached to a roller holding assembly, which has a groove therein adapted for fitting over the driving pins. The two idler rollers extend below the surface of the attaching assembly and may have a hard plastic sleeve on the ends thereof to reduce bending. The attaching assembly is rotatably mounted to a pivoting member which permits the two idler rollers to be positioned firmly against the drive roller.

REFERENCES:
patent: 3550830 (1970-12-01), Lagogue
patent: 3985277 (1976-10-01), Wright
patent: 4062021 (1977-12-01), Taylor
patent: 4467525 (1984-08-01), Logan et al.
patent: 4479598 (1984-10-01), Mailer et al.
patent: 4567491 (1986-01-01), Lawrence
patent: 4607837 (1986-08-01), Pierce

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