Print ribbon protection

Details Print ribbon protection Print ribbon protection

1981-08-03

1983-03-15

Pieprz, William

Typewriting machines

Including interposed inking device for record-medium

Means auxiliary to ribbon mechanism

400231, B41J 3536

Patent

active

043765874

ABSTRACT:
In a printing system employing a spliced endless print ribbon, an opening is provided in the ribbon adjacent the splice to enable sensing of the approach of the splice to the print station. Printing is suspended as the splice passes the print station to avoid undesirable printing quality and damage to the splice. The same sensing means detects lack of ribbon movement, indicative of a ribbon jam, to suspend printing and ribbon drive.

REFERENCES:
patent: 3949856 (1976-04-01), Ulber et al.
patent: 4268182 (1981-05-01), Mizutani et al.
IBM Technical Disclosure Bulletin, vol. 24, No. 10, Mar. 1982, pp. 5015-5016.

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