Printer for continuous form

Details Printer for continuous form Printer for continuous form

1988-05-18

1990-05-08

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

355308, 226 10, 226 27, 340675, G03G 1500

Patent

active

049242660

ABSTRACT:
In a printer for printing information onto a continuous form, at least one of opposite side edges of the continuous form is detected by a side-edge detecting arrangement. It is judged that a traveling abnormality of the continuous form occurs, when a detecting signal representative of the at least one side edge of the continuous form detected by the side-edge detecting arrangement continues for a preset period of time and more. If the continuous form is provided therein with sprocket holes, the side-edge detecting arrangement may include a pair of side-edge detectors each for detecting the sprocket holes in a corresponding one of opposite side edge portions of the continuous form. In this case, it is judged that the traveling abnormality of the continuous form occurs, when the detecting signal representative of the sprocket holes in each side edge portion of the continuous form is not continuously outputted within a preset period of time and more.

REFERENCES:
patent: 3659081 (1972-04-01), Piccione
patent: 3779440 (1973-12-01), Casale et al.
patent: 3949856 (1976-04-01), Ulber et al.
patent: 4588884 (1986-05-01), Priscott
patent: 4641070 (1987-02-01), Pfizenmaier et al.
patent: 4731542 (1988-03-01), Doggett

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