Printing apparatus with printing material non-motion detector

Typewriting machines – Typing by other than type-face or type-die – Character formation by impact

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Details

400225, 226 45, B41J 3314

Patent

active

040919137

ABSTRACT:
A printing apparatus includes a supply of printing material, a drive assembly coupled to the printing material and capable when enabled of advancing the material along a predetermined path past a printing station, and a detection device for detecting when the printing material fails to be advanced by at least a first predetermined amount when the drive assembly has been enabled to advance the material by at least a second predetermined amount.

REFERENCES:
patent: 3566132 (1971-02-01), Walker
patent: 3713571 (1973-01-01), Simonton
patent: 3917142 (1975-11-01), Guarderas
patent: 3939957 (1976-02-01), Bittner
patent: 3949856 (1976-04-01), Ulber et al.

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