Thermal printer with jam detection device

Details Thermal printer with jam detection device Thermal printer with jam detection device

1996-10-25

1999-11-09

Hilten, John

Typewriting machines

Means auxiliary to typewriting function

Indicator means

400 74, B41J 29387

Patent

active

059801425

ABSTRACT:
In a single-pass, multi-head thermal printer, wherein a recording material is transported along a transport path, a mark sensor is disposed in proximity to each of a plurality of thermal heads. The sensors detect positioning marks which are provided on the recording material at constant intervals in the transporting direction. Each time a positioning mark is detected, a timer circuit begins measuring the time that has passed since the last detection of a positioning mark. If the measured time reaches a predetermined jam detection time, an alarm or a warning display is given, and the recording material stops being transported.

REFERENCES:
patent: 4590859 (1986-05-01), Pou et al.
patent: 4880324 (1989-11-01), Sato
patent: 5061947 (1991-10-01), Morrison et al.
patent: 5086987 (1992-02-01), Sheih
patent: 5247314 (1993-09-01), Stephenson
patent: 5526741 (1996-06-01), Gallagher et al.
patent: 5628574 (1997-05-01), Crowley

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