Apparatus for detecting a sheet by displacement of a roller

Details Apparatus for detecting a sheet by displacement of a roller Apparatus for detecting a sheet by displacement of a roller

1989-03-23

1991-02-19

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250223R, 356381, G01N 2186, G01V 904

Patent

active

049946781

ABSTRACT:
An apparatus, which detects a position of a transported sheet for controlling the printing position on the sheet, cyclically detecting whether the sheet arrives at a prescribed point or not, and generating a detecting signal when the arrival of the sheet is consecutively detected.

REFERENCES:
patent: 3956764 (1976-05-01), Schausberger
patent: 4881086 (1989-11-01), Misawa

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