Paper guide for line printer

Details Paper guide for line printer Paper guide for line printer

1983-03-03

1984-02-07

Burr, Edgar S.

Typewriting machines

Sheet or web

For feeding web record-medium

400619, 400646, 226 74, 226199, 242 76, B41J 1130

Patent

active

044300123

ABSTRACT:
A curvilinear, semi-rigid paper guide for a bi-directional line printer mounted on a platen which provides a surface that bears against the moving print head as the print medium passes between the print head and the paper guide is disclosed. By adjusting the curvature of the paper guide, differences in the distances between adjacent drive sprockets of upper and lower print medium drive mechanisms may be compensated for thus ensuring the printing of straight, parallel and unskewed character lines. In addition, the present invention may be used in a line printer having a single print medium drive mechanism to compensate for nonlinearities in and non-parallelism between the surface of the platen and print head movement.

REFERENCES:
patent: 1638560 (1927-08-01), Beveridge
patent: 2764087 (1956-09-01), Stobb
patent: 3106365 (1963-10-01), Karr
patent: 3970193 (1976-07-01), Robinson et al.
patent: 4129239 (1978-12-01), Hubbard
IBM Technical Disclosure Bulletin "Controlled Path for Continuous Form Feeding 38 vol. 1, No. 6, Apr. 1959, p. 3 by Reed.

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