Printing medium detecting mechanism of printer

Details Printing medium detecting mechanism of printer Printing medium detecting mechanism of printer

1985-10-25

1987-09-01

Pearson, Charles A.

Typewriting machines

Means auxiliary to typewriting function

Indicator means

400642, 400662, 400706, 400711, B41J 2946

Patent

active

046905774

ABSTRACT:
A printing medium detecting mechanism of a printer having a plurality of printing medium traveling paths includes a detecting groove provided in a circumferential portion of a platen other than a printing region thereof, a first printing medium detecting lever disposed on one of the plurality of the traveling paths to freely fit in the detecting lever, and a medium detecting sensor provided on a printer control circuit board. The printing medium detecting mechanism further includes a second printing medium detecting lever provided on any other medium traveling path of the plurality of the medium traveling paths. The first printing medium detecting lever is adapted to be interlocked with the second printing medium detecting lever, thereby enabling to provide a simplified printing medium detecting mechanism.

REFERENCES:
patent: 1053926 (1913-02-01), Neidig
patent: 1838881 (1931-12-01), Taylor
patent: 2599085 (1952-06-01), Bader
patent: 4111565 (1978-09-01), Jagger
patent: 4141660 (1979-02-01), Bommersheim et al.
J. H. Dodge et al., "Two-Point Paper Path Condition Switch"; IBM Technical Disclosure Bulletin; vol. 22, No. 3, pp. 914--914; Aug. 1979.
R. H. Hams et al., "Journal Roll Take-up Compensation Method & Apparatus"; IBM Tech. Disc. Bull.; vol. 26, No. 6, pp. 2893-2895; Nov. 1983.

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