Anti-backlash tractor assembly

Details Anti-backlash tractor assembly Anti-backlash tractor assembly

1985-08-12

1987-05-05

Pearson, Charles A.

Typewriting machines

Sheet or web

For feeding web record-medium

400604, B41J 1130

Patent

active

046627677

ABSTRACT:
An anti-backlash tractor assembly for the accurate registration of bi-directionally transported endless paper to the printing mechanism of a printer. When mounted upon the printer in an operative position, a resilient biasing device will urge the printer driving gear and the tractor assembly driven gear together for dynamically eliminating backlash therebetween and for dynamically compensating for gear eccentricities and other drive train variations. Also, in the operative position, a manual adjustment lever is provided for establishing nominal paper tension.

REFERENCES:
patent: 2130015 (1938-09-01), Jensen
patent: 4086997 (1978-05-01), Wu
patent: 4402623 (1983-09-01), Biche et al.
patent: 4440516 (1984-04-01), Rosenthal et al.
patent: 4485950 (1984-12-01), Kuelzer
patent: 4544294 (1985-10-01), Runzi
patent: 4563101 (1986-01-01), Okamura et al.
patent: 4571103 (1986-02-01), Takeo et al.
IBM Technical Disclosure Bulletin, vol. 26, No. 10A, pp. 4974-4975, Mar. 1984, "Anti-Backlash Index Drive Mechanism", by Krimm et al.

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