Detecting the print positions of a printing medium and...

Details Detecting the print positions of a printing medium and... Detecting the print positions of a printing medium and...

2006-04-11

2006-04-11

Colilla, Daniel J. (Department: 2854)

Typewriting machines

Sheet or web

For feeding web record-medium

Reexamination Certificate

active

07025517

ABSTRACT:
There is provided a printer capable of accurately detecting the print positions of a printing medium and keeping print positions where data are printed constant. A printer according to this invention can accurately detect the print positions of a printing medium and keep positions where data are printed constant by the following operation. More specifically, the printer sets a gap width (PG) for the printing medium and detects the position information of the conveyed printing medium by an optical sensor arranged on a convey path. The printer compares output values (Va, Vb) from the optical sensor with a threshold value (Vth) and obtains a detected gap width (AG) corresponding to the set gap width (PG). The printer changes the threshold value (Vth) such that the detected gap width (AG) coincides with the set gap width (PG).

REFERENCES:
patent: 4945829 (1990-08-01), Ericsson
patent: 5041850 (1991-08-01), Kahoyashi et al.
patent: 5293047 (1994-03-01), Matsuda
patent: 5507583 (1996-04-01), Beaty et al.
patent: 5823693 (1998-10-01), Henderson et al.
patent: 5843252 (1998-12-01), Murphy
patent: 6019531 (2000-02-01), Henderson et al.
patent: 6094280 (2000-07-01), Hayasaki et al.
patent: 6145951 (2000-11-01), Hayasaki et al.
patent: 6227645 (2001-05-01), Takahashi et al.
patent: 6338540 (2002-01-01), Hasegawa et al.
patent: 6384921 (2002-05-01), Saijo et al.
patent: 6191526 (1994-07-01), None

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